RedisTest.php

<?php defined('PHPREDIS_TESTRUN') or die("Use TestRedis.php to run tests!\n"); 

require_once(dirname($_SERVER['PHP_SELF'])."/TestSuite.php");

class Redis_Test extends TestSuite
{
    const HOST = '127.0.0.1';
    const PORT = 6379;
    const AUTH = NULL; //replace with a string to use Redis authentication

    /**
     * @var Redis
     */
    public $redis;

    public function setUp() {
        $this->redis = $this->newInstance();
        $info = $this->redis->info();
        $this->version = (isset($info['redis_version'])?$info['redis_version']:'0.0.0');
    }

    protected function newInstance() {
        $r = new Redis();
        $r->connect(self::HOST, self::PORT);

        if(self::AUTH) {
            $this->assertTrue($r->auth(self::AUTH));
        }
        return $r;
    }

    public function tearDown() {
        if($this->redis) {
            $this->redis->close();
        }
    }

    public function reset()
    {
        $this->setUp();
        $this->tearDown();
    }

    /* Helper function to determine if the clsas has pipeline support */
    protected function havePipeline() {
        $str_constant = get_class($this->redis) . '::PIPELINE';
        return defined($str_constant);
    }

    public function testMinimumVersion()
    {
        // Minimum server version required for tests
        $this->assertTrue(version_compare($this->version, "2.4.0", "ge"));
    }

    public function testPing()
    {
        $this->assertEquals('+PONG', $this->redis->ping());

        $count = 1000;
        while($count --) {
            $this->assertEquals('+PONG', $this->redis->ping());
        }
    }

    public function testPipelinePublish() {
        if (!$this->havePipeline()) {
            $this->markTestSkipped();
        }

        $ret = $this->redis->pipeline()
            ->publish('chan', 'msg')
            ->exec();

        $this->assertTrue(is_array($ret) && count($ret) === 1 && $ret[0] >= 0);
    }

    // Run some simple tests against the PUBSUB command.  This is problematic, as we
    // can't be sure what's going on in the instance, but we can do some things.
    public function testPubSub() {
        // Only available since 2.8.0
        if(version_compare($this->version, "2.8.0", "lt")) {
            $this->markTestSkipped();
            return;
        }

        // PUBSUB CHANNELS ...
        $result = $this->redis->pubsub("channels", "*");
        $this->assertTrue(is_array($result));
        $result = $this->redis->pubsub("channels");
        $this->assertTrue(is_array($result));

        // PUBSUB NUMSUB

        $c1 = uniqid() . '-' . rand(1,100);
        $c2 = uniqid() . '-' . rand(1,100);

        $result = $this->redis->pubsub("numsub", Array($c1, $c2));

        // Should get an array back, with two elements
        $this->assertTrue(is_array($result));
        $this->assertEquals(count($result), 2);

        // Make sure the elements are correct, and have zero counts
        foreach(Array($c1,$c2) as $channel) {
            $this->assertTrue(isset($result[$channel]));
            $this->assertEquals($result[$channel], 0);
        }

        // PUBSUB NUMPAT
        $result = $this->redis->pubsub("numpat");
        $this->assertTrue(is_int($result));

        // Invalid calls
        $this->assertFalse($this->redis->pubsub("notacommand"));
        $this->assertFalse($this->redis->pubsub("numsub", "not-an-array"));
    }

    public function testBitsets() {

        $this->redis->del('key');
        $this->assertEquals(0, $this->redis->getBit('key', 0));
        $this->assertEquals(FALSE, $this->redis->getBit('key', -1));
        $this->assertEquals(0, $this->redis->getBit('key', 100000));

        $this->redis->set('key', "\xff");
        for($i = 0; $i < 8; $i++) {
            $this->assertEquals(1, $this->redis->getBit('key', $i));
        }
        $this->assertEquals(0, $this->redis->getBit('key', 8));

        // change bit 0
        $this->assertEquals(1, $this->redis->setBit('key', 0, 0));
        $this->assertEquals(0, $this->redis->setBit('key', 0, 0));
        $this->assertEquals(0, $this->redis->getBit('key', 0));
        $this->assertEquals("\x7f", $this->redis->get('key'));

        // change bit 1
        $this->assertEquals(1, $this->redis->setBit('key', 1, 0));
        $this->assertEquals(0, $this->redis->setBit('key', 1, 0));
        $this->assertEquals(0, $this->redis->getBit('key', 1));
        $this->assertEquals("\x3f", $this->redis->get('key'));

        // change bit > 1
        $this->assertEquals(1, $this->redis->setBit('key', 2, 0));
        $this->assertEquals(0, $this->redis->setBit('key', 2, 0));
        $this->assertEquals(0, $this->redis->getBit('key', 2));
        $this->assertEquals("\x1f", $this->redis->get('key'));

        // values above 1 are changed to 1 but don't overflow on bits to the right.
        $this->assertEquals(0, $this->redis->setBit('key', 0, 0xff));
        $this->assertEquals("\x9f", $this->redis->get('key'));

        // Verify valid offset ranges
        $this->assertFalse($this->redis->getBit('key', -1));

        $this->redis->setBit('key', 4294967295, 1);
        $this->assertEquals(1, $this->redis->getBit('key', 4294967295));
    }

    public function testBitPos() {
        if(version_compare($this->version, "2.8.7", "lt")) {
            $this->MarkTestSkipped();
            return;
        }

        $this->redis->del('bpkey');

        $this->redis->set('bpkey', "\xff\xf0\x00");
        $this->assertEquals($this->redis->bitpos('bpkey', 0), 12);

        $this->redis->set('bpkey', "\x00\xff\xf0");
        $this->assertEquals($this->redis->bitpos('bpkey', 1, 0), 8);
        $this->assertEquals($this->redis->bitpos('bpkey', 1, 1), 8);

        $this->redis->set('bpkey', "\x00\x00\x00");
        $this->assertEquals($this->redis->bitpos('bpkey', 1), -1);
    }

    public function test1000() {

     $s = str_repeat('A', 1000);
     $this->redis->set('x', $s);
     $this->assertEquals($s, $this->redis->get('x'));

     $s = str_repeat('A', 1000000);
     $this->redis->set('x', $s);
     $this->assertEquals($s, $this->redis->get('x'));
    }

    public function testEcho() {
        $this->assertEquals($this->redis->echo("hello"), "hello");
        $this->assertEquals($this->redis->echo(""), "");
        $this->assertEquals($this->redis->echo(" 0123 "), " 0123 ");
    }

    public function testErr() {

     $this->redis->set('x', '-ERR');
     $this->assertEquals($this->redis->get('x'), '-ERR');

    }

    public function testSet()
    {
        $this->assertEquals(TRUE, $this->redis->set('key', 'nil'));
        $this->assertEquals('nil', $this->redis->get('key'));

        $this->assertEquals(TRUE, $this->redis->set('key', 'val'));

        $this->assertEquals('val', $this->redis->get('key'));
        $this->assertEquals('val', $this->redis->get('key'));
        $this->redis->del('keyNotExist');
        $this->assertEquals(FALSE, $this->redis->get('keyNotExist'));

        $this->redis->set('key2', 'val');
        $this->assertEquals('val', $this->redis->get('key2'));

        $value = 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA';

        $this->redis->set('key2', $value);
        $this->assertEquals($value, $this->redis->get('key2'));
        $this->assertEquals($value, $this->redis->get('key2'));

        $this->redis->del('key');
        $this->redis->del('key2');


        $i = 66000;
        $value2 = 'X';
        while($i--) {
            $value2 .= 'A';
        }
        $value2 .= 'X';

        $this->redis->set('key', $value2);
        $this->assertEquals($value2, $this->redis->get('key'));
        $this->redis->del('key');
        $this->assertEquals(False, $this->redis->get('key'));

        $data = gzcompress('42');
        $this->assertEquals(True, $this->redis->set('key', $data));
        $this->assertEquals('42', gzuncompress($this->redis->get('key')));

        $this->redis->del('key');
        $data = gzcompress('value1');
        $this->assertEquals(True, $this->redis->set('key', $data));
        $this->assertEquals('value1', gzuncompress($this->redis->get('key')));

        $this->redis->del('key');
        $this->assertEquals(TRUE, $this->redis->set('key', 0));
        $this->assertEquals('0', $this->redis->get('key'));
        $this->assertEquals(TRUE, $this->redis->set('key', 1));
        $this->assertEquals('1', $this->redis->get('key'));
        $this->assertEquals(TRUE, $this->redis->set('key', 0.1));
        $this->assertEquals('0.1', $this->redis->get('key'));
        $this->assertEquals(TRUE, $this->redis->set('key', '0.1'));
        $this->assertEquals('0.1', $this->redis->get('key'));
        $this->assertEquals(TRUE, $this->redis->set('key', TRUE));
        $this->assertEquals('1', $this->redis->get('key'));

        $this->assertEquals(True, $this->redis->set('key', ''));
        $this->assertEquals('', $this->redis->get('key'));
        $this->assertEquals(True, $this->redis->set('key', NULL));
        $this->assertEquals('', $this->redis->get('key'));

        $this->assertEquals(True, $this->redis->set('key', gzcompress('42')));
        $this->assertEquals('42', gzuncompress($this->redis->get('key')));
    }

    /* Extended SET options for Redis >= 2.6.12 */
    public function testExtendedSet() {
        // Skip the test if we don't have a new enough version of Redis
        if(version_compare($this->version, '2.6.12', 'lt')) {
            $this->markTestSkipped();
            return;
        }

        /* Legacy SETEX redirection */
        $this->redis->del('foo');
        $this->assertTrue($this->redis->set('foo','bar', 20));
        $this->assertEquals($this->redis->get('foo'), 'bar');
        $this->assertEquals($this->redis->ttl('foo'), 20);

        /* Invalid third arguments */
        $this->assertFalse($this->redis->set('foo','bar','baz'));
        $this->assertFalse($this->redis->set('foo','bar',new StdClass()));

        /* Set if not exist */
        $this->redis->del('foo');
        $this->assertTrue($this->redis->set('foo','bar',Array('nx')));
        $this->assertEquals($this->redis->get('foo'), 'bar');
        $this->assertFalse($this->redis->set('foo','bar',Array('nx')));

        /* Set if exists */
        $this->assertTrue($this->redis->set('foo','bar',Array('xx')));
        $this->assertEquals($this->redis->get('foo'), 'bar');
        $this->redis->del('foo');
        $this->assertFalse($this->redis->set('foo','bar',Array('xx')));

        /* Set with a TTL */
        $this->assertTrue($this->redis->set('foo','bar',Array('ex'=>100)));
        $this->assertEquals($this->redis->ttl('foo'), 100);

        /* Set with a PTTL */
        $this->assertTrue($this->redis->set('foo','bar',Array('px'=>100000)));
        $this->assertTrue(100000 - $this->redis->pttl('foo') < 1000);

        /* Set if exists, with a TTL */
        $this->assertTrue($this->redis->set('foo','bar',Array('xx','ex'=>105)));
        $this->assertEquals($this->redis->ttl('foo'), 105);
        $this->assertEquals($this->redis->get('foo'), 'bar');

        /* Set if not exists, with a TTL */
        $this->redis->del('foo');
        $this->assertTrue($this->redis->set('foo','bar', Array('nx', 'ex'=>110)));
        $this->assertEquals($this->redis->ttl('foo'), 110);
        $this->assertEquals($this->redis->get('foo'), 'bar');
        $this->assertFalse($this->redis->set('foo','bar', Array('nx', 'ex'=>110)));

        /* Throw some nonsense into the array, and check that the TTL came through */
        $this->redis->del('foo');
        $this->assertTrue($this->redis->set('foo','barbaz', Array('not-valid','nx','invalid','ex'=>200)));
        $this->assertEquals($this->redis->ttl('foo'), 200);
        $this->assertEquals($this->redis->get('foo'), 'barbaz');

        /* Pass NULL as the optional arguments which should be ignored */
        $this->redis->del('foo');
        $this->redis->set('foo','bar', NULL);
        $this->assertEquals($this->redis->get('foo'), 'bar');
        $this->assertTrue($this->redis->ttl('foo')<0);
    }

    public function testGetSet() {
        $this->redis->del('key');
        $this->assertTrue($this->redis->getSet('key', '42') === FALSE);
        $this->assertTrue($this->redis->getSet('key', '123') === '42');
        $this->assertTrue($this->redis->getSet('key', '123') === '123');
    }

    public function testRandomKey() {
        for($i = 0; $i < 1000; $i++) {
            $k = $this->redis->randomKey();
            $this->assertTrue($this->redis->exists($k));
        }
    }

    public function testRename() {
        // strings
        $this->redis->del('{key}0');
        $this->redis->set('{key}0', 'val0');
        $this->redis->rename('{key}0', '{key}1');
        $this->assertEquals(FALSE, $this->redis->get('{key}0'));
        $this->assertEquals('val0', $this->redis->get('{key}1'));
    }

    public function testRenameNx() {
        // strings
        $this->redis->del('{key}0', '{key}1');
        $this->redis->set('{key}0', 'val0');
        $this->redis->set('{key}1', 'val1');
        $this->assertTrue($this->redis->renameNx('{key}0', '{key}1') === FALSE);
        $this->assertTrue($this->redis->get('{key}0') === 'val0');
        $this->assertTrue($this->redis->get('{key}1') === 'val1');

        // lists
        $this->redis->del('{key}0');
        $this->redis->del('{key}1');
        $this->redis->lPush('{key}0', 'val0');
        $this->redis->lPush('{key}0', 'val1');
        $this->redis->lPush('{key}1', 'val1-0');
        $this->redis->lPush('{key}1', 'val1-1');
        $this->assertTrue($this->redis->renameNx('{key}0', '{key}1') === FALSE);
        $this->assertTrue($this->redis->lRange('{key}0', 0, -1) === array('val1', 'val0'));
        $this->assertTrue($this->redis->lRange('{key}1', 0, -1) === array('val1-1', 'val1-0'));

        $this->redis->del('{key}2');
        $this->assertTrue($this->redis->renameNx('{key}0', '{key}2') === TRUE);
        $this->assertTrue($this->redis->lRange('{key}0', 0, -1) === array());
        $this->assertTrue($this->redis->lRange('{key}2', 0, -1) === array('val1', 'val0'));
    }

    public function testMultiple() {
        $this->redis->del('k1');
        $this->redis->del('k2');
        $this->redis->del('k3');

        $this->redis->set('k1', 'v1');
        $this->redis->set('k2', 'v2');
        $this->redis->set('k3', 'v3');
        $this->redis->set(1, 'test');

        $this->assertEquals(array('v1'), $this->redis->mget(array('k1')));
        $this->assertEquals(array('v1', 'v3', false), $this->redis->mget(array('k1', 'k3', 'NoKey')));
        $this->assertEquals(array('v1', 'v2', 'v3'), $this->redis->mget(array('k1', 'k2', 'k3')));
        $this->assertEquals(array('v1', 'v2', 'v3'), $this->redis->mget(array('k1', 'k2', 'k3')));

        $this->redis->set('k5', '$1111111111');
        $this->assertEquals(array(0 => '$1111111111'), $this->redis->mget(array('k5')));

        $this->assertEquals(array(0 => 'test'), $this->redis->mget(array(1))); // non-string
    }

    public function testMultipleBin() {

    $this->redis->del('k1');
        $this->redis->del('k2');
        $this->redis->del('k3');

        $this->redis->set('k1', gzcompress('v1'));
        $this->redis->set('k2', gzcompress('v2'));
        $this->redis->set('k3', gzcompress('v3'));

        $this->assertEquals(array(gzcompress('v1'), gzcompress('v2'), gzcompress('v3')), $this->redis->mget(array('k1', 'k2', 'k3')));
        $this->assertEquals(array(gzcompress('v1'), gzcompress('v2'), gzcompress('v3')), $this->redis->mget(array('k1', 'k2', 'k3')));

    }

    public function testSetTimeout() {
        $this->redis->del('key');
        $this->redis->set('key', 'value');
        $this->assertEquals('value', $this->redis->get('key'));
        $this->redis->expire('key', 1);
        $this->assertEquals('value', $this->redis->get('key'));
        sleep(2);
        $this->assertEquals(False, $this->redis->get('key'));
    }

    public function testExpireAt() {
        $this->redis->del('key');
        $this->redis->set('key', 'value');
        $now = time(NULL);
        $this->redis->expireAt('key', $now + 1);
        $this->assertEquals('value', $this->redis->get('key'));
        sleep(2);
        $this->assertEquals(FALSE, $this->redis->get('key'));
    }

    public function testSetEx() {

        $this->redis->del('key');
        $this->assertTrue($this->redis->setex('key', 7, 'val') === TRUE);
        $this->assertTrue($this->redis->ttl('key') ===7);
        $this->assertTrue($this->redis->get('key') === 'val');
    }

    public function testSetNX() {

        $this->redis->set('key', 42);
        $this->assertTrue($this->redis->setnx('key', 'err') === FALSE);
        $this->assertTrue($this->redis->get('key') === '42');

        $this->redis->del('key');
        $this->assertTrue($this->redis->setnx('key', '42') === TRUE);
        $this->assertTrue($this->redis->get('key') === '42');
    }

    public function testExpireAtWithLong() {
        $longExpiryTimeExceedingInt = 3153600000;
        $this->redis->del('key');
        $this->assertTrue($this->redis->setex('key', $longExpiryTimeExceedingInt, 'val') === TRUE);
        $this->assertTrue($this->redis->ttl('key') === $longExpiryTimeExceedingInt);
    }

    public function testIncr()
    {
        $this->redis->set('key', 0);

        $this->redis->incr('key');
    $this->assertEquals(1, (int)$this->redis->get('key'));

        $this->redis->incr('key');
    $this->assertEquals(2, (int)$this->redis->get('key'));

    $this->redis->incrBy('key', 3);
    $this->assertEquals(5, (int)$this->redis->get('key'));

    $this->redis->incrBy('key', 1);
    $this->assertEquals(6, (int)$this->redis->get('key'));

    $this->redis->incrBy('key', -1);
    $this->assertEquals(5, (int)$this->redis->get('key'));

    $this->redis->incr('key', 5);
    $this->assertEquals(10, (int)$this->redis->get('key'));

    $this->redis->del('key');

    $this->redis->set('key', 'abc');

    $this->redis->incr('key');
    $this->assertTrue("abc" === $this->redis->get('key'));

    $this->redis->incr('key');
    $this->assertTrue("abc" === $this->redis->get('key'));
    }

    public function testIncrByFloat()
    {
        // incrbyfloat is new in 2.6.0
        if (version_compare($this->version, "2.5.0", "lt")) {
            $this->markTestSkipped();
        }

        $this->redis->del('key');

        $this->redis->set('key', 0);

        $this->redis->incrbyfloat('key', 1.5);
        $this->assertEquals('1.5', $this->redis->get('key'));

        $this->redis->incrbyfloat('key', 2.25);
        $this->assertEquals('3.75', $this->redis->get('key'));

        $this->redis->incrbyfloat('key', -2.25);
        $this->assertEquals('1.5', $this->redis->get('key'));

        $this->redis->set('key', 'abc');

        $this->redis->incrbyfloat('key', 1.5);
        $this->assertTrue("abc" === $this->redis->get('key'));

        $this->redis->incrbyfloat('key', -1.5);
        $this->assertTrue("abc" === $this->redis->get('key'));

        // Test with prefixing
        $this->redis->setOption(Redis::OPT_PREFIX, 'someprefix:');
        $this->redis->del('key');
        $this->redis->incrbyfloat('key',1.8);
        $this->assertEquals('1.8', $this->redis->get('key'));
        $this->redis->setOption(Redis::OPT_PREFIX, '');
        $this->assertTrue($this->redis->exists('someprefix:key'));
        $this->redis->del('someprefix:key');

    }

    public function testDecr()
    {
        $this->redis->set('key', 5);

        $this->redis->decr('key');
        $this->assertEquals(4, (int)$this->redis->get('key'));

        $this->redis->decr('key');
        $this->assertEquals(3, (int)$this->redis->get('key'));

        $this->redis->decrBy('key', 2);
        $this->assertEquals(1, (int)$this->redis->get('key'));

        $this->redis->decrBy('key', 1);
        $this->assertEquals(0, (int)$this->redis->get('key'));

        $this->redis->decrBy('key', -10);
        $this->assertEquals(10, (int)$this->redis->get('key'));

        $this->redis->decr('key', 10);
        $this->assertEquals(0, (int)$this->redis->get('key'));
    }


    public function testExists()
    {
        $this->redis->del('key');
        $this->assertFalse($this->redis->exists('key'));
        $this->redis->set('key', 'val');
        $this->assertEquals(True, $this->redis->exists('key'));
    }

    public function testGetKeys()
    {
        $pattern = 'getKeys-test-';
        for($i = 1; $i < 10; $i++) {
            $this->redis->set($pattern.$i, $i);
        }
        $this->redis->del($pattern.'3');
        $keys = $this->redis->keys($pattern.'*');

        $this->redis->set($pattern.'3', 'something');

        $keys2 = $this->redis->keys($pattern.'*');

        $this->assertEquals((count($keys) + 1), count($keys2));

        // empty array when no key matches
        $this->assertEquals(array(), $this->redis->keys(rand().rand().rand().'*'));
    }

    public function testDelete()
    {
        $key = 'key' . rand();
        $this->redis->set($key, 'val');
        $this->assertEquals('val', $this->redis->get($key));
    $this->assertEquals(1, $this->redis->del($key));
        $this->assertEquals(false, $this->redis->get($key));

    // multiple, all existing
    $this->redis->set('x', 0);
    $this->redis->set('y', 1);
    $this->redis->set('z', 2);
    $this->assertEquals(3, $this->redis->del('x', 'y', 'z'));
    $this->assertEquals(false, $this->redis->get('x'));
    $this->assertEquals(false, $this->redis->get('y'));
    $this->assertEquals(false, $this->redis->get('z'));

    // multiple, none existing
    $this->assertEquals(0, $this->redis->del('x', 'y', 'z'));
    $this->assertEquals(false, $this->redis->get('x'));
    $this->assertEquals(false, $this->redis->get('y'));
    $this->assertEquals(false, $this->redis->get('z'));

    // multiple, some existing
    $this->redis->set('y', 1);
    $this->assertEquals(1, $this->redis->del('x', 'y', 'z'));
    $this->assertEquals(false, $this->redis->get('y'));

    $this->redis->set('x', 0);
    $this->redis->set('y', 1);
    $this->assertEquals(2, $this->redis->del(array('x', 'y')));

    }

    public function testType()
    {
    // 0 => none, (key didn't exist)
    // 1=> string,
    // 2 => set,
    // 3 => list,
    // 4 => zset,
    // 5 => hash

    // string
    $this->redis->set('key', 'val');
    $this->assertEquals(Redis::REDIS_STRING, $this->redis->type('key'));

    // list
    $this->redis->lPush('keyList', 'val0');
    $this->redis->lPush('keyList', 'val1');
    $this->assertEquals(Redis::REDIS_LIST, $this->redis->type('keyList'));

    // set
    $this->redis->del('keySet');
    $this->redis->sAdd('keySet', 'val0');
    $this->redis->sAdd('keySet', 'val1');
    $this->assertEquals(Redis::REDIS_SET, $this->redis->type('keySet'));

    // sadd with numeric key
    $this->redis->del(123);
    $this->assertTrue(1 === $this->redis->sAdd(123, 'val0'));
    $this->assertTrue(array('val0') === $this->redis->sMembers(123));

    // zset
    $this->redis->del('keyZSet');
    $this->redis->zAdd('keyZSet', 0, 'val0');
    $this->redis->zAdd('keyZSet', 1, 'val1');
    $this->assertEquals(Redis::REDIS_ZSET, $this->redis->type('keyZSet'));

    // hash
    $this->redis->del('keyHash');
    $this->redis->hSet('keyHash', 'key0', 'val0');
    $this->redis->hSet('keyHash', 'key1', 'val1');
    $this->assertEquals(Redis::REDIS_HASH, $this->redis->type('keyHash'));

    //None
    $this->assertEquals(Redis::REDIS_NOT_FOUND, $this->redis->type('keyNotExists'));
    }

    public function testStr() {

        $this->redis->set('key', 'val1');
        $this->assertTrue($this->redis->append('key', 'val2') === 8);
        $this->assertTrue($this->redis->get('key') === 'val1val2');

        $this->redis->del('keyNotExist');
        $this->assertTrue($this->redis->append('keyNotExist', 'value') === 5);
        $this->assertTrue($this->redis->get('keyNotExist') === 'value');

        $this->redis->set('key', 'This is a string') ;
        $this->assertTrue($this->redis->getRange('key', 0, 3) === 'This');
        $this->assertTrue($this->redis->getRange('key', -6, -1) === 'string');
        $this->assertTrue($this->redis->getRange('key', -6, 100000) === 'string');
        $this->assertTrue($this->redis->get('key') === 'This is a string');

        $this->redis->set('key', 'This is a string') ;
        $this->assertTrue($this->redis->strlen('key') === 16);

        $this->redis->set('key', 10) ;
        $this->assertTrue($this->redis->strlen('key') === 2);
        $this->redis->set('key', '') ;
        $this->assertTrue($this->redis->strlen('key') === 0);
        $this->redis->set('key', '000') ;
        $this->assertTrue($this->redis->strlen('key') === 3);
    }

    // PUSH, POP : LPUSH, LPOP
    public function testlPop()
    {

    //  rpush  => tail
    //  lpush => head


        $this->redis->del('list');

        $this->redis->lPush('list', 'val');
        $this->redis->lPush('list', 'val2');
    $this->redis->rPush('list', 'val3');

    // 'list' = [ 'val2', 'val', 'val3']

    $this->assertEquals('val2', $this->redis->lPop('list'));
        $this->assertEquals('val', $this->redis->lPop('list'));
        $this->assertEquals('val3', $this->redis->lPop('list'));
        $this->assertEquals(FALSE, $this->redis->lPop('list'));

    // testing binary data

    $this->redis->del('list');
    $this->assertEquals(1, $this->redis->lPush('list', gzcompress('val1')));
    $this->assertEquals(2, $this->redis->lPush('list', gzcompress('val2')));
    $this->assertEquals(3, $this->redis->lPush('list', gzcompress('val3')));

    $this->assertEquals('val3', gzuncompress($this->redis->lPop('list')));
    $this->assertEquals('val2', gzuncompress($this->redis->lPop('list')));
    $this->assertEquals('val1', gzuncompress($this->redis->lPop('list')));

    }

    // PUSH, POP : RPUSH, RPOP
    public function testrPop()
    {
    //  rpush  => tail
    //  lpush => head

        $this->redis->del('list');

        $this->redis->rPush('list', 'val');
        $this->redis->rPush('list', 'val2');
    $this->redis->lPush('list', 'val3');

    // 'list' = [ 'val3', 'val', 'val2']

    $this->assertEquals('val2', $this->redis->rPop('list'));
        $this->assertEquals('val', $this->redis->rPop('list'));
        $this->assertEquals('val3', $this->redis->rPop('list'));
        $this->assertEquals(FALSE, $this->redis->rPop('list'));

    // testing binary data

    $this->redis->del('list');
    $this->assertEquals(1, $this->redis->rPush('list', gzcompress('val1')));
    $this->assertEquals(2, $this->redis->rPush('list', gzcompress('val2')));
    $this->assertEquals(3, $this->redis->rPush('list', gzcompress('val3')));

    $this->assertEquals('val3', gzuncompress($this->redis->rPop('list')));
    $this->assertEquals('val2', gzuncompress($this->redis->rPop('list')));
    $this->assertEquals('val1', gzuncompress($this->redis->rPop('list')));

    }

    public function testblockingPop() {
        // non blocking blPop, brPop
        $this->redis->del('list');
        $this->redis->lPush('list', 'val1');
        $this->redis->lPush('list', 'val2');
        $this->assertTrue($this->redis->blPop(array('list'), 2) === array('list', 'val2'));
        $this->assertTrue($this->redis->blPop(array('list'), 2) === array('list', 'val1'));

        $this->redis->del('list');
        $this->redis->lPush('list', 'val1');
        $this->redis->lPush('list', 'val2');
        $this->assertTrue($this->redis->brPop(array('list'), 1) === array('list', 'val1'));
        $this->assertTrue($this->redis->brPop(array('list'), 1) === array('list', 'val2'));

        // blocking blpop, brpop
        $this->redis->del('list');
        $this->assertTrue($this->redis->blPop(array('list'), 1) === array());
        $this->assertTrue($this->redis->brPop(array('list'), 1) === array());
    }

    public function testllen()
    {
        $this->redis->del('list');

        $this->redis->lPush('list', 'val');
        $this->assertEquals(1, $this->redis->llen('list'));

        $this->redis->lPush('list', 'val2');
        $this->assertEquals(2, $this->redis->llen('list'));

        $this->assertEquals('val2', $this->redis->lPop('list'));
        $this->assertEquals(1, $this->redis->llen('list'));

        $this->assertEquals('val', $this->redis->lPop('list'));
        $this->assertEquals(0, $this->redis->llen('list'));

        $this->assertEquals(FALSE, $this->redis->lPop('list'));
        $this->assertEquals(0, $this->redis->llen('list'));    // empty returns 0

        $this->redis->del('list');
        $this->assertEquals(0, $this->redis->llen('list'));    // non-existent returns 0

        $this->redis->set('list', 'actually not a list');
        $this->assertEquals(FALSE, $this->redis->llen('list'));// not a list returns FALSE
    }

    //lInsert, lPopx, rPopx
    public function testlPopx() {
        //test lPushx/rPushx
        $this->redis->del('keyNotExists');
        $this->assertTrue($this->redis->lPushx('keyNotExists', 'value') === 0);
        $this->assertTrue($this->redis->rPushx('keyNotExists', 'value') === 0);

        $this->redis->del('key');
        $this->redis->lPush('key', 'val0');
        $this->assertTrue($this->redis->lPushx('key', 'val1') === 2);
        $this->assertTrue($this->redis->rPushx('key', 'val2') === 3);
        $this->assertTrue($this->redis->lrange('key', 0, -1) === array('val1', 'val0', 'val2'));

        //test linsert
        $this->redis->del('key');
        $this->redis->lPush('key', 'val0');
        $this->assertTrue($this->redis->lInsert('keyNotExists', Redis::AFTER, 'val1', 'val2') === 0);
        $this->assertTrue($this->redis->lInsert('key', Redis::BEFORE, 'valX', 'val2') === -1);

        $this->assertTrue($this->redis->lInsert('key', Redis::AFTER, 'val0', 'val1') === 2);
        $this->assertTrue($this->redis->lInsert('key', Redis::BEFORE, 'val0', 'val2') === 3);
        $this->assertTrue($this->redis->lrange('key', 0, -1) === array('val2', 'val0', 'val1'));
    }

    // ltrim, lsize, lpop
    public function testltrim()
    {

        $this->redis->del('list');

        $this->redis->lPush('list', 'val');
        $this->redis->lPush('list', 'val2');
        $this->redis->lPush('list', 'val3');
        $this->redis->lPush('list', 'val4');

    $this->assertEquals(TRUE, $this->redis->ltrim('list', 0, 2));
    $this->assertEquals(3, $this->redis->llen('list'));

        $this->redis->ltrim('list', 0, 0);
        $this->assertEquals(1, $this->redis->llen('list'));
    $this->assertEquals('val4', $this->redis->lPop('list'));

    $this->assertEquals(TRUE, $this->redis->ltrim('list', 10, 10000));
    $this->assertEquals(TRUE, $this->redis->ltrim('list', 10000, 10));

    // test invalid type
    $this->redis->set('list', 'not a list...');
    $this->assertEquals(FALSE, $this->redis->ltrim('list', 0, 2));

    }

    public function setupSort() {
        // people with name, age, salary
        $this->redis->set('person:name_1', 'Alice');
        $this->redis->set('person:age_1', 27);
        $this->redis->set('person:salary_1', 2500);

        $this->redis->set('person:name_2', 'Bob');
        $this->redis->set('person:age_2', 34);
        $this->redis->set('person:salary_2', 2000);

        $this->redis->set('person:name_3', 'Carol');
        $this->redis->set('person:age_3', 25);
        $this->redis->set('person:salary_3', 2800);

        $this->redis->set('person:name_4', 'Dave');
        $this->redis->set('person:age_4', 41);
        $this->redis->set('person:salary_4', 3100);

        // set-up
        $this->redis->del('person:id');
        foreach(array(1,2,3,4) as $id) {
            $this->redis->lPush('person:id', $id);
        }
    }

    public function testSortPrefix() {
        // Make sure that sorting works with a prefix
        $this->redis->setOption(Redis::OPT_PREFIX, 'some-prefix:');
        $this->redis->del('some-item');
        $this->redis->sadd('some-item', 1);
        $this->redis->sadd('some-item', 2);
        $this->redis->sadd('some-item', 3);

        $this->assertEquals(array('1','2','3'), $this->redis->sortAsc('some-item'));
        $this->assertEquals(array('3','2','1'), $this->redis->sortDesc('some-item'));
        $this->assertEquals(array('1','2','3'), $this->redis->sort('some-item'));

        // Kill our set/prefix
        $this->redis->del('some-item');
        $this->redis->setOption(Redis::OPT_PREFIX, '');
    }

    public function testSortAsc() {
        $this->setupSort();
        $this->assertTrue(FALSE === $this->redis->sortAsc(NULL));

        // sort by age and get IDs
        $byAgeAsc = array('3','1','2','4');
        $this->assertEquals($byAgeAsc, $this->redis->sortAsc('person:id', 'person:age_*'));
        $this->assertEquals($byAgeAsc, $this->redis->sort('person:id', array('by' => 'person:age_*', 'sort' => 'asc')));
        $this->assertEquals(array('1', '2', '3', '4'), $this->redis->sortAsc('person:id', NULL));   // check that NULL works.
        $this->assertEquals(array('1', '2', '3', '4'), $this->redis->sortAsc('person:id', NULL, NULL)); // for all fields.
        $this->assertEquals(array('1', '2', '3', '4'), $this->redis->sort('person:id', array('sort' => 'asc')));

        // sort by age and get names
        $byAgeAsc = array('Carol','Alice','Bob','Dave');
        $this->assertEquals($byAgeAsc, $this->redis->sortAsc('person:id', 'person:age_*', 'person:name_*'));
        $this->assertEquals($byAgeAsc, $this->redis->sort('person:id', array('by' => 'person:age_*', 'get' => 'person:name_*', 'sort' => 'asc')));

        $this->assertEquals(array_slice($byAgeAsc, 0, 2), $this->redis->sortAsc('person:id', 'person:age_*', 'person:name_*', 0, 2));
        $this->assertEquals(array_slice($byAgeAsc, 0, 2), $this->redis->sort('person:id', array('by' => 'person:age_*', 'get' => 'person:name_*', 'limit' => array(0, 2), 'sort' => 'asc')));

        $this->assertEquals(array_slice($byAgeAsc, 1, 2), $this->redis->sortAsc('person:id', 'person:age_*', 'person:name_*', 1, 2));
        $this->assertEquals(array_slice($byAgeAsc, 1, 2), $this->redis->sort('person:id', array('by' => 'person:age_*', 'get' => 'person:name_*', 'limit' => array(1, 2), 'sort' => 'asc')));
        $this->assertEquals(array_slice($byAgeAsc, 0, 3), $this->redis->sortAsc('person:id', 'person:age_*', 'person:name_*', NULL, 3)); // NULL is transformed to 0 if there is something after it.
        $this->assertEquals($byAgeAsc, $this->redis->sortAsc('person:id', 'person:age_*', 'person:name_*', 0, 4));
        $this->assertEquals($byAgeAsc, $this->redis->sort('person:id', array('by' => 'person:age_*', 'get' => 'person:name_*', 'limit' => array(0, 4))));
        $this->assertEquals($byAgeAsc, $this->redis->sort('person:id', array('by' => 'person:age_*', 'get' => 'person:name_*', 'limit' => array(0, "4")))); // with strings
        $this->assertEquals($byAgeAsc, $this->redis->sort('person:id', array('by' => 'person:age_*', 'get' => 'person:name_*', 'limit' => array("0", 4))));
        $this->assertEquals(array(), $this->redis->sortAsc('person:id', 'person:age_*', 'person:name_*', NULL, NULL)); // NULL, NULL is the same as (0,0). That returns no element.

        // sort by salary and get ages
        $agesBySalaryAsc = array('34', '27', '25', '41');
        $this->assertEquals($agesBySalaryAsc, $this->redis->sortAsc('person:id', 'person:salary_*', 'person:age_*'));
        $this->assertEquals($agesBySalaryAsc, $this->redis->sort('person:id', array('by' => 'person:salary_*', 'get' => 'person:age_*', 'sort' => 'asc')));

        $agesAndSalaries = $this->redis->sort('person:id', array('by' => 'person:salary_*', 'get' => array('person:age_*', 'person:salary_*'), 'sort' => 'asc'));
        $this->assertEquals(array('34', '2000', '27', '2500', '25', '2800', '41', '3100'), $agesAndSalaries);

        // sort non-alpha doesn't change all-string lists
        // list → [ghi, def, abc]
        $list = array('abc', 'def', 'ghi');
        $this->redis->del('list');
        foreach($list as $i) {
            $this->redis->lPush('list', $i);
        }

        // SORT list → [ghi, def, abc]
        if (version_compare($this->version, "2.5.0", "lt")) {
            $this->assertEquals(array_reverse($list), $this->redis->sortAsc('list'));
            $this->assertEquals(array_reverse($list), $this->redis->sort('list', array('sort' => 'asc')));
        } else {
            // TODO rewrite, from 2.6.0 release notes:
            // SORT now will refuse to sort in numerical mode elements that can't be parsed
            // as numbers
        }

        // SORT list ALPHA → [abc, def, ghi]
        $this->assertEquals($list, $this->redis->sortAscAlpha('list'));
        $this->assertEquals($list, $this->redis->sort('list', array('sort' => 'asc', 'alpha' => TRUE)));
    }

    public function testSortDesc() {

    $this->setupSort();

    // sort by age and get IDs
    $byAgeDesc = array('4','2','1','3');
    $this->assertEquals($byAgeDesc, $this->redis->sortDesc('person:id', 'person:age_*'));

    // sort by age and get names
    $byAgeDesc = array('Dave', 'Bob', 'Alice', 'Carol');
    $this->assertEquals($byAgeDesc, $this->redis->sortDesc('person:id', 'person:age_*', 'person:name_*'));

    $this->assertEquals(array_slice($byAgeDesc, 0, 2), $this->redis->sortDesc('person:id', 'person:age_*', 'person:name_*', 0, 2));
    $this->assertEquals(array_slice($byAgeDesc, 1, 2), $this->redis->sortDesc('person:id', 'person:age_*', 'person:name_*', 1, 2));

    // sort by salary and get ages
    $agesBySalaryDesc = array('41', '25', '27', '34');
    $this->assertEquals($agesBySalaryDesc, $this->redis->sortDesc('person:id', 'person:salary_*', 'person:age_*'));

    // sort non-alpha doesn't change all-string lists
    $list = array('def', 'abc', 'ghi');
    $this->redis->del('list');
    foreach($list as $i) {
        $this->redis->lPush('list', $i);
    }

    // SORT list → [ghi, abc, def]
    if (version_compare($this->version, "2.5.0", "lt")) {
        $this->assertEquals(array_reverse($list), $this->redis->sortDesc('list'));
    } else {
        // TODO rewrite, from 2.6.0 release notes:
        // SORT now will refuse to sort in numerical mode elements that can't be parsed
        // as numbers
    }

    // SORT list ALPHA → [abc, def, ghi]
    $this->assertEquals(array('ghi', 'def', 'abc'), $this->redis->sortDescAlpha('list'));
    }

    // LINDEX
    public function testlGet() {

        $this->redis->del('list');

        $this->redis->lPush('list', 'val');
        $this->redis->lPush('list', 'val2');
        $this->redis->lPush('list', 'val3');

    $this->assertEquals('val3', $this->redis->lGet('list', 0));
        $this->assertEquals('val2', $this->redis->lGet('list', 1));
    $this->assertEquals('val', $this->redis->lGet('list', 2));
    $this->assertEquals('val', $this->redis->lGet('list', -1));
    $this->assertEquals('val2', $this->redis->lGet('list', -2));
    $this->assertEquals('val3', $this->redis->lGet('list', -3));
    $this->assertEquals(FALSE, $this->redis->lGet('list', -4));

        $this->redis->rPush('list', 'val4');
    $this->assertEquals('val4', $this->redis->lGet('list', 3));
    $this->assertEquals('val4', $this->redis->lGet('list', -1));
    }

    // lRem testing
    public function testlrem() {
        $this->redis->del('list');
        $this->redis->lPush('list', 'a');
        $this->redis->lPush('list', 'b');
        $this->redis->lPush('list', 'c');
        $this->redis->lPush('list', 'c');
        $this->redis->lPush('list', 'b');
        $this->redis->lPush('list', 'c');
    // ['c', 'b', 'c', 'c', 'b', 'a']
    $return = $this->redis->lrem('list', 'b', 2);
    // ['c', 'c', 'c', 'a']
    $this->assertEquals(2, $return);
    $this->assertEquals('c', $this->redis->lGET('list', 0));
    $this->assertEquals('c', $this->redis->lGET('list', 1));
    $this->assertEquals('c', $this->redis->lGET('list', 2));
    $this->assertEquals('a', $this->redis->lGET('list', 3));

        $this->redis->del('list');
        $this->redis->lPush('list', 'a');
        $this->redis->lPush('list', 'b');
        $this->redis->lPush('list', 'c');
        $this->redis->lPush('list', 'c');
        $this->redis->lPush('list', 'b');
        $this->redis->lPush('list', 'c');
    // ['c', 'b', 'c', 'c', 'b', 'a']
    $this->redis->lrem('list', 'c', -2);
    // ['c', 'b', 'b', 'a']
    $this->assertEquals(2, $return);
    $this->assertEquals('c', $this->redis->lGET('list', 0));
    $this->assertEquals('b', $this->redis->lGET('list', 1));
    $this->assertEquals('b', $this->redis->lGET('list', 2));
    $this->assertEquals('a', $this->redis->lGET('list', 3));

    // remove each element
    $this->assertEquals(1, $this->redis->lrem('list', 'a', 0));
    $this->assertEquals(0, $this->redis->lrem('list', 'x', 0));
    $this->assertEquals(2, $this->redis->lrem('list', 'b', 0));
    $this->assertEquals(1, $this->redis->lrem('list', 'c', 0));
    $this->assertEquals(FALSE, $this->redis->get('list'));

    $this->redis->set('list', 'actually not a list');
    $this->assertEquals(FALSE, $this->redis->lrem('list', 'x'));

    }

    public function testsAdd()
    {
        $this->redis->del('set');

    $this->assertEquals(1, $this->redis->sAdd('set', 'val'));
    $this->assertEquals(0, $this->redis->sAdd('set', 'val'));

        $this->assertTrue($this->redis->sismember('set', 'val'));
        $this->assertFalse($this->redis->sismember('set', 'val2'));

    $this->assertEquals(1, $this->redis->sAdd('set', 'val2'));

        $this->assertTrue($this->redis->sismember('set', 'val2'));
    }
    public function testscard()
    {
        $this->redis->del('set');

    $this->assertEquals(1, $this->redis->sAdd('set', 'val'));

        $this->assertEquals(1, $this->redis->scard('set'));

    $this->assertEquals(1, $this->redis->sAdd('set', 'val2'));

        $this->assertEquals(2, $this->redis->scard('set'));
    }

    public function testsrem()
    {
        $this->redis->del('set');

        $this->redis->sAdd('set', 'val');
        $this->redis->sAdd('set', 'val2');

        $this->redis->srem('set', 'val');

        $this->assertEquals(1, $this->redis->scard('set'));

        $this->redis->srem('set', 'val2');

        $this->assertEquals(0, $this->redis->scard('set'));
    }

    public function testsMove()
    {
        $this->redis->del('{set}0');
        $this->redis->del('{set}1');

        $this->redis->sAdd('{set}0', 'val');
        $this->redis->sAdd('{set}0', 'val2');

        $this->assertTrue($this->redis->sMove('{set}0', '{set}1', 'val'));
        $this->assertFalse($this->redis->sMove('{set}0', '{set}1', 'val'));
        $this->assertFalse($this->redis->sMove('{set}0', '{set}1', 'val-what'));

        $this->assertEquals(1, $this->redis->scard('{set}0'));
        $this->assertEquals(1, $this->redis->scard('{set}1'));

        $this->assertEquals(array('val2'), $this->redis->smembers('{set}0'));
        $this->assertEquals(array('val'), $this->redis->smembers('{set}1'));
    }

    public function testsPop()
    {
        $this->redis->del('set0');
    $this->assertTrue($this->redis->sPop('set0') === FALSE);

        $this->redis->sAdd('set0', 'val');
        $this->redis->sAdd('set0', 'val2');

    $v0 = $this->redis->sPop('set0');
    $this->assertTrue(1 === $this->redis->scard('set0'));
    $this->assertTrue($v0 === 'val' || $v0 === 'val2');
    $v1 = $this->redis->sPop('set0');
    $this->assertTrue(0 === $this->redis->scard('set0'));
    $this->assertTrue(($v0 === 'val' && $v1 === 'val2') || ($v1 === 'val' && $v0 === 'val2'));

    $this->assertTrue($this->redis->sPop('set0') === FALSE);
    }

    public function testsRandMember() {
        $this->redis->del('set0');
        $this->assertTrue($this->redis->sRandMember('set0') === FALSE);

        $this->redis->sAdd('set0', 'val');
        $this->redis->sAdd('set0', 'val2');

        $got = array();
        while(true) {
            $v = $this->redis->sRandMember('set0');
            $this->assertTrue(2 === $this->redis->scard('set0')); // no change.
            $this->assertTrue($v === 'val' || $v === 'val2');

            $got[$v] = $v;
            if(count($got) == 2) {
                break;
            }
        }

        //
        // With and without count, while serializing
        //

        $this->redis->del('set0');
        $this->redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP);
        for($i=0;$i<5;$i++) {
            $member = "member:$i";
            $this->redis->sAdd('set0', $member);
            $mems[] = $member;
        }

        $member = $this->redis->srandmember('set0');
        $this->assertTrue(in_array($member, $mems));

        $rmembers = $this->redis->srandmember('set0', $i);
        foreach($rmembers as $reply_mem) {
            $this->assertTrue(in_array($reply_mem, $mems));
        }

        $this->redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_NONE);
    }

    public function testSRandMemberWithCount() {
        // Make sure the set is nuked
        $this->redis->del('set0');

        // Run with a count (positive and negative) on an empty set
        $ret_pos = $this->redis->sRandMember('set0', 10);
        $ret_neg = $this->redis->sRandMember('set0', -10);

        // Should both be empty arrays
        $this->assertTrue(is_array($ret_pos) && empty($ret_pos));
        $this->assertTrue(is_array($ret_neg) && empty($ret_neg));

        // Add a few items to the set
        for($i=0;$i<100;$i++) {
            $this->redis->sadd('set0', "member$i");
        }

        // Get less than the size of the list
        $ret_slice = $this->redis->srandmember('set0', 20);

        // Should be an array with 20 items
        $this->assertTrue(is_array($ret_slice) && count($ret_slice) == 20);

        // Ask for more items than are in the list (but with a positive count)
        $ret_slice = $this->redis->srandmember('set0', 200);

        // Should be an array, should be however big the set is, exactly
        $this->assertTrue(is_array($ret_slice) && count($ret_slice) == $i);

        // Now ask for too many items but negative
        $ret_slice = $this->redis->srandmember('set0', -200);

        // Should be an array, should have exactly the # of items we asked for (will be dups)
        $this->assertTrue(is_array($ret_slice) && count($ret_slice) == 200);

        //
        // Test in a pipeline
        //

        if ($this->havePipeline()) {
            $pipe = $this->redis->pipeline();

            $pipe->srandmember('set0', 20);
            $pipe->srandmember('set0', 200);
            $pipe->srandmember('set0', -200);

            $ret = $this->redis->exec();

            $this->assertTrue(is_array($ret[0]) && count($ret[0]) == 20);
            $this->assertTrue(is_array($ret[1]) && count($ret[1]) == $i);
            $this->assertTrue(is_array($ret[2]) && count($ret[2]) == 200);

            // Kill the set
            $this->redis->del('set0');
        }
    }

    public function testsismember()
    {
        $this->redis->del('set');

        $this->redis->sAdd('set', 'val');

        $this->assertTrue($this->redis->sismember('set', 'val'));
        $this->assertFalse($this->redis->sismember('set', 'val2'));
    }

    public function testsmembers()
    {
        $this->redis->del('set');

        $this->redis->sAdd('set', 'val');
        $this->redis->sAdd('set', 'val2');
        $this->redis->sAdd('set', 'val3');

        $array = array('val', 'val2', 'val3');

        $smembers = $this->redis->smembers('set');
        sort($smembers);
        $this->assertEquals($array, $smembers);

        $sMembers = $this->redis->sMembers('set');
        sort($sMembers);
        $this->assertEquals($array, $sMembers); // test alias
    }

    public function testlSet() {

        $this->redis->del('list');
        $this->redis->lPush('list', 'val');
        $this->redis->lPush('list', 'val2');
    $this->redis->lPush('list', 'val3');

    $this->assertEquals($this->redis->lGet('list', 0), 'val3');
    $this->assertEquals($this->redis->lGet('list', 1), 'val2');
    $this->assertEquals($this->redis->lGet('list', 2), 'val');

    $this->assertEquals(TRUE, $this->redis->lSet('list', 1, 'valx'));

    $this->assertEquals($this->redis->lGet('list', 0), 'val3');
    $this->assertEquals($this->redis->lGet('list', 1), 'valx');
    $this->assertEquals($this->redis->lGet('list', 2), 'val');

    }

    public function testsInter() {
        $this->redis->del('{set}odd');    // set of odd numbers
        $this->redis->del('{set}prime');  // set of prime numbers
        $this->redis->del('{set}square'); // set of squares
        $this->redis->del('{set}seq');    // set of numbers of the form n^2 - 1

        $x = array(1,3,5,7,9,11,13,15,17,19,21,23,25);
        foreach($x as $i) {
            $this->redis->sAdd('{set}odd', $i);
        }

        $y = array(1,2,3,5,7,11,13,17,19,23);
        foreach($y as $i) {
            $this->redis->sAdd('{set}prime', $i);
        }

        $z = array(1,4,9,16,25);
        foreach($z as $i) {
            $this->redis->sAdd('{set}square', $i);
        }

        $t = array(2,5,10,17,26);
        foreach($t as $i) {
            $this->redis->sAdd('{set}seq', $i);
        }

        $xy = $this->redis->sInter('{set}odd', '{set}prime');   // odd prime numbers
        foreach($xy as $i) {
            $i = (int)$i;
            $this->assertTrue(in_array($i, array_intersect($x, $y)));
        }

        $xy = $this->redis->sInter(array('{set}odd', '{set}prime'));    // odd prime numbers, as array.
        foreach($xy as $i) {
            $i = (int)$i;
            $this->assertTrue(in_array($i, array_intersect($x, $y)));
        }

        $yz = $this->redis->sInter('{set}prime', '{set}square');   // set of prime squares
        foreach($yz as $i) {
            $i = (int)$i;
            $this->assertTrue(in_array($i, array_intersect($y, $z)));
        }

        $yz = $this->redis->sInter(array('{set}prime', '{set}square'));    // set of odd squares, as array
        foreach($yz as $i) {
        $i = (int)$i;
            $this->assertTrue(in_array($i, array_intersect($y, $z)));
        }

        $zt = $this->redis->sInter('{set}square', '{set}seq');   // prime squares
        $this->assertTrue($zt === array());
        $zt = $this->redis->sInter(array('{set}square', '{set}seq'));    // prime squares, as array
        $this->assertTrue($zt === array());

        $xyz = $this->redis->sInter('{set}odd', '{set}prime', '{set}square');// odd prime squares
        $this->assertTrue($xyz === array('1'));

        $xyz = $this->redis->sInter(array('{set}odd', '{set}prime', '{set}square'));// odd prime squares, with an array as a parameter
        $this->assertTrue($xyz === array('1'));

        $nil = $this->redis->sInter(array());
        $this->assertTrue($nil === FALSE);
    }

    public function testsInterStore() {
        $this->redis->del('{set}x');  // set of odd numbers
        $this->redis->del('{set}y');  // set of prime numbers
        $this->redis->del('{set}z');  // set of squares
        $this->redis->del('{set}t');  // set of numbers of the form n^2 - 1

        $x = array(1,3,5,7,9,11,13,15,17,19,21,23,25);
        foreach($x as $i) {
            $this->redis->sAdd('{set}x', $i);
        }

        $y = array(1,2,3,5,7,11,13,17,19,23);
        foreach($y as $i) {
            $this->redis->sAdd('{set}y', $i);
        }

        $z = array(1,4,9,16,25);
        foreach($z as $i) {
            $this->redis->sAdd('{set}z', $i);
        }

        $t = array(2,5,10,17,26);
        foreach($t as $i) {
            $this->redis->sAdd('{set}t', $i);
        }

        $count = $this->redis->sInterStore('{set}k', '{set}x', '{set}y');  // odd prime numbers
        $this->assertEquals($count, $this->redis->scard('{set}k'));
        foreach(array_intersect($x, $y) as $i) {
            $this->assertTrue($this->redis->sismember('{set}k', $i));
        }

        $count = $this->redis->sInterStore('{set}k', '{set}y', '{set}z');  // set of odd squares
        $this->assertEquals($count, $this->redis->scard('{set}k'));
        foreach(array_intersect($y, $z) as $i) {
            $this->assertTrue($this->redis->sismember('{set}k', $i));
        }

        $count = $this->redis->sInterStore('{set}k', '{set}z', '{set}t');  // squares of the form n^2 + 1
        $this->assertEquals($count, 0);
        $this->assertEquals($count, $this->redis->scard('{set}k'));

        $this->redis->del('{set}z');
        $xyz = $this->redis->sInterStore('{set}k', '{set}x', '{set}y', '{set}z'); // only z missing, expect 0.
        $this->assertTrue($xyz === 0);

        $this->redis->del('{set}y');
        $xyz = $this->redis->sInterStore('{set}k', '{set}x', '{set}y', '{set}z'); // y and z missing, expect 0.
        $this->assertTrue($xyz === 0);

        $this->redis->del('{set}x');
        $xyz = $this->redis->sInterStore('{set}k', '{set}x', '{set}y', '{set}z'); // x y and z ALL missing, expect 0.
        $this->assertTrue($xyz === 0);
    }

    public function testsUnion() {
        $this->redis->del('{set}x');  // set of odd numbers
        $this->redis->del('{set}y');  // set of prime numbers
        $this->redis->del('{set}z');  // set of squares
        $this->redis->del('{set}t');  // set of numbers of the form n^2 - 1

        $x = array(1,3,5,7,9,11,13,15,17,19,21,23,25);
        foreach($x as $i) {
            $this->redis->sAdd('{set}x', $i);
        }

        $y = array(1,2,3,5,7,11,13,17,19,23);
        foreach($y as $i) {
            $this->redis->sAdd('{set}y', $i);
        }

        $z = array(1,4,9,16,25);
        foreach($z as $i) {
            $this->redis->sAdd('{set}z', $i);
        }

        $t = array(2,5,10,17,26);
        foreach($t as $i) {
            $this->redis->sAdd('{set}t', $i);
        }

        $xy = $this->redis->sUnion('{set}x', '{set}y');   // x U y
        foreach($xy as $i) {
        $i = (int)$i;
            $this->assertTrue(in_array($i, array_merge($x, $y)));
        }

        $yz = $this->redis->sUnion('{set}y', '{set}z');   // y U Z
        foreach($yz as $i) {
        $i = (int)$i;
            $this->assertTrue(in_array($i, array_merge($y, $z)));
        }

        $zt = $this->redis->sUnion('{set}z', '{set}t');   // z U t
        foreach($zt as $i) {
        $i = (int)$i;
            $this->assertTrue(in_array($i, array_merge($z, $t)));
        }

        $xyz = $this->redis->sUnion('{set}x', '{set}y', '{set}z'); // x U y U z
        foreach($xyz as $i) {
        $i = (int)$i;
            $this->assertTrue(in_array($i, array_merge($x, $y, $z)));
        }
    }

    public function testsUnionStore() {
        $this->redis->del('{set}x');  // set of odd numbers
        $this->redis->del('{set}y');  // set of prime numbers
        $this->redis->del('{set}z');  // set of squares
        $this->redis->del('{set}t');  // set of numbers of the form n^2 - 1

        $x = array(1,3,5,7,9,11,13,15,17,19,21,23,25);
        foreach($x as $i) {
            $this->redis->sAdd('{set}x', $i);
        }

        $y = array(1,2,3,5,7,11,13,17,19,23);
        foreach($y as $i) {
            $this->redis->sAdd('{set}y', $i);
        }

        $z = array(1,4,9,16,25);
        foreach($z as $i) {
            $this->redis->sAdd('{set}z', $i);
        }

        $t = array(2,5,10,17,26);
        foreach($t as $i) {
            $this->redis->sAdd('{set}t', $i);
        }

        $count = $this->redis->sUnionStore('{set}k', '{set}x', '{set}y');  // x U y
        $xy = array_unique(array_merge($x, $y));
        $this->assertEquals($count, count($xy));
        foreach($xy as $i) {
        $i = (int)$i;
            $this->assertTrue($this->redis->sismember('{set}k', $i));
        }

        $count = $this->redis->sUnionStore('{set}k', '{set}y', '{set}z');  // y U z
        $yz = array_unique(array_merge($y, $z));
        $this->assertEquals($count, count($yz));
        foreach($yz as $i) {
        $i = (int)$i;
            $this->assertTrue($this->redis->sismember('{set}k', $i));
        }

        $count = $this->redis->sUnionStore('{set}k', '{set}z', '{set}t');  // z U t
        $zt = array_unique(array_merge($z, $t));
        $this->assertEquals($count, count($zt));
        foreach($zt as $i) {
        $i = (int)$i;
            $this->assertTrue($this->redis->sismember('{set}k', $i));
        }

        $count = $this->redis->sUnionStore('{set}k', '{set}x', '{set}y', '{set}z'); // x U y U z
        $xyz = array_unique(array_merge($x, $y, $z));
        $this->assertEquals($count, count($xyz));
        foreach($xyz as $i) {
        $i = (int)$i;
            $this->assertTrue($this->redis->sismember('{set}k', $i));
        }

        $this->redis->del('{set}x');  // x missing now
        $count = $this->redis->sUnionStore('{set}k', '{set}x', '{set}y', '{set}z'); // x U y U z
        $this->assertTrue($count === count(array_unique(array_merge($y, $z))));

        $this->redis->del('{set}y');  // x and y missing
        $count = $this->redis->sUnionStore('{set}k', '{set}x', '{set}y', '{set}z'); // x U y U z
        $this->assertTrue($count === count(array_unique($z)));

        $this->redis->del('{set}z');  // x, y, and z ALL missing
        $count = $this->redis->sUnionStore('{set}k', '{set}x', '{set}y', '{set}z'); // x U y U z
        $this->assertTrue($count === 0);
    }

    public function testsDiff() {
        $this->redis->del('{set}x');  // set of odd numbers
        $this->redis->del('{set}y');  // set of prime numbers
        $this->redis->del('{set}z');  // set of squares
        $this->redis->del('{set}t');  // set of numbers of the form n^2 - 1

        $x = array(1,3,5,7,9,11,13,15,17,19,21,23,25);
        foreach($x as $i) {
            $this->redis->sAdd('{set}x', $i);
        }

        $y = array(1,2,3,5,7,11,13,17,19,23);
        foreach($y as $i) {
            $this->redis->sAdd('{set}y', $i);
        }

        $z = array(1,4,9,16,25);
        foreach($z as $i) {
            $this->redis->sAdd('{set}z', $i);
        }

        $t = array(2,5,10,17,26);
        foreach($t as $i) {
            $this->redis->sAdd('{set}t', $i);
        }

        $xy = $this->redis->sDiff('{set}x', '{set}y');    // x U y
        foreach($xy as $i) {
        $i = (int)$i;
            $this->assertTrue(in_array($i, array_diff($x, $y)));
        }

        $yz = $this->redis->sDiff('{set}y', '{set}z');    // y U Z
        foreach($yz as $i) {
        $i = (int)$i;
            $this->assertTrue(in_array($i, array_diff($y, $z)));
        }

        $zt = $this->redis->sDiff('{set}z', '{set}t');    // z U t
        foreach($zt as $i) {
        $i = (int)$i;
            $this->assertTrue(in_array($i, array_diff($z, $t)));
        }

        $xyz = $this->redis->sDiff('{set}x', '{set}y', '{set}z'); // x U y U z
        foreach($xyz as $i) {
        $i = (int)$i;
            $this->assertTrue(in_array($i, array_diff($x, $y, $z)));
        }
    }

    public function testsDiffStore() {
        $this->redis->del('{set}x');  // set of odd numbers
        $this->redis->del('{set}y');  // set of prime numbers
        $this->redis->del('{set}z');  // set of squares
        $this->redis->del('{set}t');  // set of numbers of the form n^2 - 1

        $x = array(1,3,5,7,9,11,13,15,17,19,21,23,25);
        foreach($x as $i) {
            $this->redis->sAdd('{set}x', $i);
        }

        $y = array(1,2,3,5,7,11,13,17,19,23);
        foreach($y as $i) {
            $this->redis->sAdd('{set}y', $i);
        }

        $z = array(1,4,9,16,25);
        foreach($z as $i) {
            $this->redis->sAdd('{set}z', $i);
        }

        $t = array(2,5,10,17,26);
        foreach($t as $i) {
            $this->redis->sAdd('{set}t', $i);
        }

        $count = $this->redis->sDiffStore('{set}k', '{set}x', '{set}y');   // x - y
        $xy = array_unique(array_diff($x, $y));
        $this->assertEquals($count, count($xy));
        foreach($xy as $i) {
            $i = (int)$i;
            $this->assertTrue($this->redis->sismember('{set}k', $i));
        }

        $count = $this->redis->sDiffStore('{set}k', '{set}y', '{set}z');   // y - z
        $yz = array_unique(array_diff($y, $z));
        $this->assertEquals($count, count($yz));
        foreach($yz as $i) {
        $i = (int)$i;
            $this->assertTrue($this->redis->sismember('{set}k', $i));
        }

        $count = $this->redis->sDiffStore('{set}k', '{set}z', '{set}t');   // z - t
        $zt = array_unique(array_diff($z, $t));
        $this->assertEquals($count, count($zt));
        foreach($zt as $i) {
        $i = (int)$i;
            $this->assertTrue($this->redis->sismember('{set}k', $i));
        }

        $count = $this->redis->sDiffStore('{set}k', '{set}x', '{set}y', '{set}z');  // x - y - z
        $xyz = array_unique(array_diff($x, $y, $z));
        $this->assertEquals($count, count($xyz));
        foreach($xyz as $i) {
        $i = (int)$i;
            $this->assertTrue($this->redis->sismember('{set}k', $i));
        }

        $this->redis->del('{set}x');  // x missing now
        $count = $this->redis->sDiffStore('{set}k', '{set}x', '{set}y', '{set}z');  // x - y - z
        $this->assertTrue($count === 0);

        $this->redis->del('{set}y');  // x and y missing
        $count = $this->redis->sDiffStore('{set}k', '{set}x', '{set}y', '{set}z');  // x - y - z
        $this->assertTrue($count === 0);

        $this->redis->del('{set}z');  // x, y, and z ALL missing
        $count = $this->redis->sDiffStore('{set}k', '{set}x', '{set}y', '{set}z');  // x - y - z
        $this->assertTrue($count === 0);
    }

    public function testlrange() {
        $this->redis->del('list');
        $this->redis->lPush('list', 'val');
        $this->redis->lPush('list', 'val2');
        $this->redis->lPush('list', 'val3');

        // pos :   0     1     2
        // pos :  -3    -2    -1
        // list: [val3, val2, val]

        $this->assertEquals($this->redis->lrange('list', 0, 0), array('val3'));
        $this->assertEquals($this->redis->lrange('list', 0, 1), array('val3', 'val2'));
        $this->assertEquals($this->redis->lrange('list', 0, 2), array('val3', 'val2', 'val'));
        $this->assertEquals($this->redis->lrange('list', 0, 3), array('val3', 'val2', 'val'));

        $this->assertEquals($this->redis->lrange('list', 0, -1), array('val3', 'val2', 'val'));
        $this->assertEquals($this->redis->lrange('list', 0, -2), array('val3', 'val2'));
        $this->assertEquals($this->redis->lrange('list', -2, -1), array('val2', 'val'));

        $this->redis->del('list');
        $this->assertEquals($this->redis->lrange('list', 0, -1), array());
    }

    public function testdbSize() {
        $this->assertTrue($this->redis->flushDB());
        $this->redis->set('x', 'y');
        $this->assertTrue($this->redis->dbSize() === 1);
    }

    public function testttl() {
        $this->redis->set('x', 'y');
        $this->redis->expire('x', 5);
        for($i = 5; $i > 0; $i--) {
            $this->assertEquals($i, $this->redis->ttl('x'));
            sleep(1);
        }

        // A key with no TTL
        $this->redis->del('x'); $this->redis->set('x', 'bar');
        $this->assertEquals($this->redis->ttl('x'), -1);

        // A key that doesn't exist (> 2.8 will return -2)
        if(version_compare($this->version, "2.8.0", "gte")) {
            $this->redis->del('x');
            $this->assertEquals($this->redis->ttl('x'), -2);
        }
    }

    public function testPersist() {
        $this->redis->set('x', 'y');
        $this->redis->expire('x', 100);
        $this->assertTrue(TRUE === $this->redis->persist('x'));     // true if there is a timeout
        $this->assertTrue(-1 === $this->redis->ttl('x'));       // -1: timeout has been removed.
        $this->assertTrue(FALSE === $this->redis->persist('x'));    // false if there is no timeout
        $this->redis->del('x');
        $this->assertTrue(FALSE === $this->redis->persist('x'));    // false if the key doesn’t exist.
    }

    public function testClient() {
        /* CLIENT SETNAME */
        $this->assertTrue($this->redis->client('setname', 'phpredis_unit_tests'));

        /* CLIENT LIST */
        $arr_clients = $this->redis->client('list');
        $this->assertTrue(is_array($arr_clients));

        // Figure out which ip:port is us!
        $str_addr = NULL;
        foreach($arr_clients as $arr_client) {
            if($arr_client['name'] == 'phpredis_unit_tests') {
                $str_addr = $arr_client['addr'];
            }
        }

        // We should have found our connection
        $this->assertFalse(empty($str_addr));

        /* CLIENT GETNAME */
        $this->assertTrue($this->redis->client('getname'), 'phpredis_unit_tests');

        /* CLIENT KILL -- phpredis will reconnect, so we can do this */
        $this->assertTrue($this->redis->client('kill', $str_addr));
    }

    public function testSlowlog() {
        // We don't really know what's going to be in the slowlog, but make sure
        // the command returns proper types when called in various ways
        $this->assertTrue(is_array($this->redis->slowlog('get')));
        $this->assertTrue(is_array($this->redis->slowlog('get', 10)));
        $this->assertTrue(is_int($this->redis->slowlog('len')));
        $this->assertTrue($this->redis->slowlog('reset'));
        $this->assertFalse($this->redis->slowlog('notvalid'));
    }

    public function testWait() {
        // Closest we can check based on redis commmit history
        if(version_compare($this->version, '2.9.11', 'lt')) {
            $this->markTestSkipped();
            return;
        }

        // We could have slaves here, so determine that
        $arr_slaves = $this->redis->info();
        $i_slaves   = $arr_slaves['connected_slaves'];

        // Send a couple commands
        $this->redis->set('wait-foo', 'over9000');
        $this->redis->set('wait-bar', 'revo9000');

        // Make sure we get the right replication count
        $this->assertEquals($this->redis->wait($i_slaves, 100), $i_slaves);

        // Pass more slaves than are connected
        $this->redis->set('wait-foo','over9000');
        $this->redis->set('wait-bar','revo9000');
        $this->assertTrue($this->redis->wait($i_slaves+1, 100) < $i_slaves+1);

        // Make sure when we pass with bad arguments we just get back false
        $this->assertFalse($this->redis->wait(-1, -1));
        $this->assertFalse($this->redis->wait(-1, 20));
    }

    public function testInfo() {
        $info = $this->redis->info();

        $keys = array(
            "redis_version",
            "arch_bits",
            "uptime_in_seconds",
            "uptime_in_days",
            "connected_clients",
            "connected_slaves",
            "used_memory",
            "total_connections_received",
            "total_commands_processed",
            "role"
        );
        if (version_compare($this->version, "2.5.0", "lt")) {
            array_push($keys,
                "changes_since_last_save",
                "bgsave_in_progress",
                "last_save_time"
            );
        } else {
            array_push($keys,
                "rdb_changes_since_last_save",
                "rdb_bgsave_in_progress",
                "rdb_last_save_time"
            );
        }

        foreach($keys as $k) {
            $this->assertTrue(in_array($k, array_keys($info)));
        }
    }

    public function testInfoCommandStats() {

    // INFO COMMANDSTATS is new in 2.6.0
    if (version_compare($this->version, "2.5.0", "lt")) {
        $this->markTestSkipped();
    }

    $info = $this->redis->info("COMMANDSTATS");

    $this->assertTrue(is_array($info));
    if (is_array($info)) {
        foreach($info as $k => $value) {
            $this->assertTrue(strpos($k, 'cmdstat_') !== false);
        }
    }
    }

    public function testSelect() {
        $this->assertFalse($this->redis->select(-1));
        $this->assertTrue($this->redis->select(0));
    }

    public function testMset() {
    $this->redis->del('x', 'y', 'z');    // remove x y z
    $this->assertTrue($this->redis->mset(array('x' => 'a', 'y' => 'b', 'z' => 'c')));   // set x y z

    $this->assertEquals($this->redis->mget(array('x', 'y', 'z')), array('a', 'b', 'c'));    // check x y z

    $this->redis->del('x');  // delete just x
    $this->assertTrue($this->redis->mset(array('x' => 'a', 'y' => 'b', 'z' => 'c')));   // set x y z
    $this->assertEquals($this->redis->mget(array('x', 'y', 'z')), array('a', 'b', 'c'));    // check x y z

    $this->assertFalse($this->redis->mset(array())); // set ø → FALSE


    /*
     * Integer keys
     */

    // No prefix
    $set_array = Array(-1 => 'neg1', -2 => 'neg2', -3 => 'neg3', 1 => 'one', 2 => 'two', '3' => 'three');
    $this->redis->del(array_keys($set_array));
    $this->assertTrue($this->redis->mset($set_array));
    $this->assertEquals($this->redis->mget(array_keys($set_array)), array_values($set_array));
    $this->redis->del(array_keys($set_array));

    // With a prefix
    $this->redis->setOption(Redis::OPT_PREFIX, 'pfx:');
    $this->redis->del(array_keys($set_array));
    $this->assertTrue($this->redis->mset($set_array));
    $this->assertEquals($this->redis->mget(array_keys($set_array)), array_values($set_array));
    $this->redis->del(array_keys($set_array));
    $this->redis->setOption(Redis::OPT_PREFIX, '');
    }

    public function testMsetNX() {
        $this->redis->del('x', 'y', 'z');    // remove x y z
        $this->assertTrue(TRUE === $this->redis->msetnx(array('x' => 'a', 'y' => 'b', 'z' => 'c')));    // set x y z

        $this->assertEquals($this->redis->mget(array('x', 'y', 'z')), array('a', 'b', 'c'));    // check x y z

        $this->redis->del('x');  // delete just x
        $this->assertTrue(FALSE === $this->redis->msetnx(array('x' => 'A', 'y' => 'B', 'z' => 'C')));   // set x y z
        $this->assertEquals($this->redis->mget(array('x', 'y', 'z')), array(FALSE, 'b', 'c'));  // check x y z

        $this->assertFalse($this->redis->msetnx(array())); // set ø → FALSE
    }

    public function testRpopLpush() {
        // standard case.
        $this->redis->del('{list}x', '{list}y');
        $this->redis->lpush('{list}x', 'abc');
        $this->redis->lpush('{list}x', 'def');    // x = [def, abc]

        $this->redis->lpush('{list}y', '123');
        $this->redis->lpush('{list}y', '456');    // y = [456, 123]

        $this->assertEquals($this->redis->rpoplpush('{list}x', '{list}y'), 'abc');  // we RPOP x, yielding abc.
        $this->assertEquals($this->redis->lrange('{list}x', 0, -1), array('def')); // only def remains in x.
        $this->assertEquals($this->redis->lrange('{list}y', 0, -1), array('abc', '456', '123'));   // abc has been lpushed to y.

        // with an empty source, expecting no change.
        $this->redis->del('{list}x', '{list}y');
        $this->assertTrue(FALSE === $this->redis->rpoplpush('{list}x', '{list}y'));
        $this->assertTrue(array() === $this->redis->lrange('{list}x', 0, -1));
        $this->assertTrue(array() === $this->redis->lrange('{list}y', 0, -1));
    }

    public function testBRpopLpush() {
        // standard case.
        $this->redis->del('{list}x', '{list}y');
        $this->redis->lpush('{list}x', 'abc');
        $this->redis->lpush('{list}x', 'def');    // x = [def, abc]

        $this->redis->lpush('{list}y', '123');
        $this->redis->lpush('{list}y', '456');    // y = [456, 123]

        $this->assertEquals($this->redis->brpoplpush('{list}x', '{list}y', 1), 'abc');  // we RPOP x, yielding abc.
        $this->assertEquals($this->redis->lrange('{list}x', 0, -1), array('def')); // only def remains in x.
        $this->assertEquals($this->redis->lrange('{list}y', 0, -1), array('abc', '456', '123'));   // abc has been lpushed to y.

        // with an empty source, expecting no change.
        $this->redis->del('{list}x', '{list}y');
        $this->assertTrue(FALSE === $this->redis->brpoplpush('{list}x', '{list}y', 1));
        $this->assertTrue(array() === $this->redis->lrange('{list}x', 0, -1));
        $this->assertTrue(array() === $this->redis->lrange('{list}y', 0, -1));
    }

    public function testZAddFirstArg() {

        $this->redis->del('key');

        $zsetName = 100; // not a string!
        $this->assertTrue(1 === $this->redis->zAdd($zsetName, 0, 'val0'));
        $this->assertTrue(1 === $this->redis->zAdd($zsetName, 1, 'val1'));

        $this->assertTrue(array('val0', 'val1') === $this->redis->zRange($zsetName, 0, -1));
    }

    public function testZX() {
        $this->redis->del('key');

        $this->assertTrue(array() === $this->redis->zRange('key', 0, -1));
        $this->assertTrue(array() === $this->redis->zRange('key', 0, -1, true));

        $this->assertTrue(1 === $this->redis->zAdd('key', 0, 'val0'));
        $this->assertTrue(1 === $this->redis->zAdd('key', 2, 'val2'));
        $this->assertTrue(1 === $this->redis->zAdd('key', 1, 'val1'));
        $this->assertTrue(1 === $this->redis->zAdd('key', 3, 'val3'));
        $this->assertTrue(2 === $this->redis->zAdd('key', 4, 'val4', 5, 'val5')); // multiple parameters

        $this->assertTrue(array('val0', 'val1', 'val2', 'val3', 'val4', 'val5') === $this->redis->zRange('key', 0, -1));

        // withscores
        $ret = $this->redis->zRange('key', 0, -1, true);
        $this->assertTrue(count($ret) == 6);
        $this->assertTrue($ret['val0'] == 0);
        $this->assertTrue($ret['val1'] == 1);
        $this->assertTrue($ret['val2'] == 2);
        $this->assertTrue($ret['val3'] == 3);
        $this->assertTrue($ret['val4'] == 4);
        $this->assertTrue($ret['val5'] == 5);

        $this->assertTrue(0 === $this->redis->zRem('key', 'valX'));
        $this->assertTrue(1 === $this->redis->zRem('key', 'val3'));
        $this->assertTrue(1 === $this->redis->zRem('key', 'val4'));
        $this->assertTrue(1 === $this->redis->zRem('key', 'val5'));

        $this->assertTrue(array('val0', 'val1', 'val2') === $this->redis->zRange('key', 0, -1));

        // zGetReverseRange

        $this->assertTrue(1 === $this->redis->zAdd('key', 3, 'val3'));
        $this->assertTrue(1 === $this->redis->zAdd('key', 3, 'aal3'));

        $zero_to_three = $this->redis->zRangeByScore('key', 0, 3);
        $this->assertTrue(array('val0', 'val1', 'val2', 'aal3', 'val3') === $zero_to_three || array('val0', 'val1', 'val2', 'val3', 'aal3') === $zero_to_three);

        $three_to_zero = $this->redis->zRevRangeByScore('key', 3, 0);
        $this->assertTrue(array_reverse(array('val0', 'val1', 'val2', 'aal3', 'val3')) === $three_to_zero || array_reverse(array('val0', 'val1', 'val2', 'val3', 'aal3')) === $three_to_zero);

        $this->assertTrue(5 === $this->redis->zCount('key', 0, 3));

        // withscores
        $this->redis->zRem('key', 'aal3');
        $zero_to_three = $this->redis->zRangeByScore('key', 0, 3, array('withscores' => TRUE));
        $this->assertTrue(array('val0' => 0, 'val1' => 1, 'val2' => 2, 'val3' => 3) == $zero_to_three);
        $this->assertTrue(4 === $this->redis->zCount('key', 0, 3));

        // limit
        $this->assertTrue(array('val0') === $this->redis->zRangeByScore('key', 0, 3, array('limit' => array(0, 1))));
        $this->assertTrue(array('val0', 'val1') === $this->redis->zRangeByScore('key', 0, 3, array('limit' => array(0, 2))));
        $this->assertTrue(array('val1', 'val2') === $this->redis->zRangeByScore('key', 0, 3, array('limit' => array(1, 2))));
        $this->assertTrue(array('val0', 'val1') === $this->redis->zRangeByScore('key', 0, 1, array('limit' => array(0, 100))));

        $this->assertTrue(array('val3') === $this->redis->zRevRangeByScore('key', 3, 0, array('limit' => array(0, 1))));
        $this->assertTrue(array('val3', 'val2') === $this->redis->zRevRangeByScore('key', 3, 0, array('limit' => array(0, 2))));
        $this->assertTrue(array('val2', 'val1') === $this->redis->zRevRangeByScore('key', 3, 0, array('limit' => array(1, 2))));
        $this->assertTrue(array('val1', 'val0') === $this->redis->zRevRangeByScore('key', 1, 0, array('limit' => array(0, 100))));

        $this->assertTrue(4 === $this->redis->zCard('key'));
        $this->assertTrue(1.0 === $this->redis->zScore('key', 'val1'));
        $this->assertFalse($this->redis->zScore('key', 'val'));
        $this->assertFalse($this->redis->zScore(3, 2));

        // with () and +inf, -inf
        $this->redis->del('zset');
        $this->redis->zAdd('zset', 1, 'foo');
        $this->redis->zAdd('zset', 2, 'bar');
        $this->redis->zAdd('zset', 3, 'biz');
        $this->redis->zAdd('zset', 4, 'foz');
        $this->assertTrue(array('foo' => 1, 'bar' => 2, 'biz' => 3, 'foz' => 4) == $this->redis->zRangeByScore('zset', '-inf', '+inf', array('withscores' => TRUE)));
        $this->assertTrue(array('foo' => 1, 'bar' => 2) == $this->redis->zRangeByScore('zset', 1, 2, array('withscores' => TRUE)));
        $this->assertTrue(array('bar' => 2) == $this->redis->zRangeByScore('zset', '(1', 2, array('withscores' => TRUE)));
        $this->assertTrue(array() == $this->redis->zRangeByScore('zset', '(1', '(2', array('withscores' => TRUE)));

        $this->assertTrue(4 == $this->redis->zCount('zset', '-inf', '+inf'));
        $this->assertTrue(2 == $this->redis->zCount('zset', 1, 2));
        $this->assertTrue(1 == $this->redis->zCount('zset', '(1', 2));
        $this->assertTrue(0 == $this->redis->zCount('zset', '(1', '(2'));


        // zincrby
        $this->redis->del('key');
        $this->assertTrue(1.0 === $this->redis->zIncrBy('key', 1, 'val1'));
        $this->assertTrue(1.0 === $this->redis->zScore('key', 'val1'));
        $this->assertTrue(2.5 === $this->redis->zIncrBy('key', 1.5, 'val1'));
        $this->assertTrue(2.5 === $this->redis->zScore('key', 'val1'));

        // zUnionStore
        $this->redis->del('{zset}1');
        $this->redis->del('{zset}2');
        $this->redis->del('{zset}3');
        $this->redis->del('{zset}U');

        $this->redis->zAdd('{zset}1', 0, 'val0');
        $this->redis->zAdd('{zset}1', 1, 'val1');

        $this->redis->zAdd('{zset}2', 2, 'val2');
        $this->redis->zAdd('{zset}2', 3, 'val3');

        $this->redis->zAdd('{zset}3', 4, 'val4');
        $this->redis->zAdd('{zset}3', 5, 'val5');

        $this->assertTrue(4 === $this->redis->zUnionStore('{zset}U', array('{zset}1', '{zset}3')));
        $this->assertTrue(array('val0', 'val1', 'val4', 'val5') === $this->redis->zRange('{zset}U', 0, -1));

        // Union on non existing keys
        $this->redis->del('{zset}U');
        $this->assertTrue(0 === $this->redis->zUnionStore('{zset}U', array('{zset}X', '{zset}Y')));
        $this->assertTrue(array() === $this->redis->zRange('{zset}U', 0, -1));

        // !Exist U Exist → copy of existing zset.
        $this->redis->del('{zset}U', 'X');
        $this->assertTrue(2 === $this->redis->zUnionStore('{zset}U', array('{zset}1', '{zset}X')));

        // test weighted zUnion
        $this->redis->del('{zset}Z');
        $this->assertTrue(4 === $this->redis->zUnionStore('{zset}Z', array('{zset}1', '{zset}2'), array(1, 1)));
        $this->assertTrue(array('val0', 'val1', 'val2', 'val3') === $this->redis->zRange('{zset}Z', 0, -1));

        $this->redis->zRemRangeByScore('{zset}Z', 0, 10);
        $this->assertTrue(4 === $this->redis->zUnionStore('{zset}Z', array('{zset}1', '{zset}2'), array(5, 1)));
        $this->assertTrue(array('val0', 'val2', 'val3', 'val1') === $this->redis->zRange('{zset}Z', 0, -1));

        $this->redis->del('{zset}1');
        $this->redis->del('{zset}2');
        $this->redis->del('{zset}3');

        //test zUnion with weights and aggegration function
        $this->redis->zadd('{zset}1', 1, 'duplicate');
        $this->redis->zadd('{zset}2', 2, 'duplicate');
        $this->redis->zUnionStore('{zset}U', array('{zset}1','{zset}2'), array(1,1), 'MIN');
        $this->assertTrue($this->redis->zScore('{zset}U', 'duplicate')===1.0);
        $this->redis->del('{zset}U');

        //now test zUnion *without* weights but with aggregrate function
        $this->redis->zUnionStore('{zset}U', array('{zset}1','{zset}2'), null, 'MIN');
        $this->assertTrue($this->redis->zScore('{zset}U', 'duplicate')===1.0);
        $this->redis->del('{zset}U', '{zset}1', '{zset}2');

        // test integer and float weights (GitHub issue #109).
        $this->redis->del('{zset}1', '{zset}2', '{zset}3');

        $this->redis->zadd('{zset}1', 1, 'one');
        $this->redis->zadd('{zset}1', 2, 'two');
        $this->redis->zadd('{zset}2', 1, 'one');
        $this->redis->zadd('{zset}2', 2, 'two');
        $this->redis->zadd('{zset}2', 3, 'three');

        $this->assertTrue($this->redis->zUnionStore('{zset}3', array('{zset}1', '{zset}2'), array(2, 3.0)) === 3);

        $this->redis->del('{zset}1');
        $this->redis->del('{zset}2');
        $this->redis->del('{zset}3');

        // Test 'inf', '-inf', and '+inf' weights (GitHub issue #336)
        $this->redis->zadd('{zset}1', 1, 'one', 2, 'two', 3, 'three');
        $this->redis->zadd('{zset}2', 3, 'three', 4, 'four', 5, 'five');

        // Make sure phpredis handles these weights
        $this->assertTrue($this->redis->zUnionStore('{zset}3', array('{zset}1','{zset}2'), array(1, 'inf'))  === 5);
        $this->assertTrue($this->redis->zUnionStore('{zset}3', array('{zset}1','{zset}2'), array(1, '-inf')) === 5);
        $this->assertTrue($this->redis->zUnionStore('{zset}3', array('{zset}1','{zset}2'), array(1, '+inf')) === 5);

        // Now, confirm that they're being sent, and that it works
        $arr_weights = Array('inf','-inf','+inf');

        foreach($arr_weights as $str_weight) {
            $r = $this->redis->zUnionStore('{zset}3', array('{zset}1','{zset}2'), array(1,$str_weight));
            $this->assertTrue($r===5);
            $r = $this->redis->zrangebyscore('{zset}3', '(-inf', '(inf',array('withscores'=>true));
            $this->assertTrue(count($r)===2);
            $this->assertTrue(isset($r['one']));
            $this->assertTrue(isset($r['two']));
        }

        $this->redis->del('{zset}1','{zset}2','{zset}3');

        $this->redis->zadd('{zset}1', 2000.1, 'one');
        $this->redis->zadd('{zset}1', 3000.1, 'two');
        $this->redis->zadd('{zset}1', 4000.1, 'three');

        $ret = $this->redis->zRange('{zset}1', 0, -1, TRUE);
        $this->assertTrue(count($ret) === 3);
        $retValues = array_keys($ret);

        $this->assertTrue(array('one', 'two', 'three') === $retValues);

        // + 0 converts from string to float OR integer
        $this->assertTrue(is_float($ret['one'] + 0));
        $this->assertTrue(is_float($ret['two'] + 0));
        $this->assertTrue(is_float($ret['three'] + 0));

        $this->redis->del('{zset}1');

        // ZREMRANGEBYRANK
        $this->redis->zAdd('{zset}1', 1, 'one');
        $this->redis->zAdd('{zset}1', 2, 'two');
        $this->redis->zAdd('{zset}1', 3, 'three');
        $this->assertTrue(2 === $this->redis->zremrangebyrank('{zset}1', 0, 1));
        $this->assertTrue(array('three' => 3) == $this->redis->zRange('{zset}1', 0, -1, TRUE));

        $this->redis->del('{zset}1');

        // zInter

        $this->redis->zAdd('{zset}1', 0, 'val0');
        $this->redis->zAdd('{zset}1', 1, 'val1');
        $this->redis->zAdd('{zset}1', 3, 'val3');

        $this->redis->zAdd('{zset}2', 2, 'val1');
        $this->redis->zAdd('{zset}2', 3, 'val3');

        $this->redis->zAdd('{zset}3', 4, 'val3');
        $this->redis->zAdd('{zset}3', 5, 'val5');

        $this->redis->del('{zset}I');
        $this->assertTrue(2 === $this->redis->zInterStore('{zset}I', array('{zset}1', '{zset}2')));
        $this->assertTrue(array('val1', 'val3') === $this->redis->zRange('{zset}I', 0, -1));

        // Union on non existing keys
        $this->assertTrue(0 === $this->redis->zInterStore('{zset}X', array('{zset}X', '{zset}Y')));
        $this->assertTrue(array() === $this->redis->zRange('{zset}X', 0, -1));

        // !Exist U Exist
        $this->assertTrue(0 === $this->redis->zInterStore('{zset}Y', array('{zset}1', '{zset}X')));
        $this->assertTrue(array() === $this->redis->zRange('keyY', 0, -1));


        // test weighted zInter
        $this->redis->del('{zset}1');
        $this->redis->del('{zset}2');
        $this->redis->del('{zset}3');

        $this->redis->zAdd('{zset}1', 0, 'val0');
        $this->redis->zAdd('{zset}1', 1, 'val1');
        $this->redis->zAdd('{zset}1', 3, 'val3');


        $this->redis->zAdd('{zset}2', 2, 'val1');
        $this->redis->zAdd('{zset}2', 1, 'val3');

        $this->redis->zAdd('{zset}3', 7, 'val1');
        $this->redis->zAdd('{zset}3', 3, 'val3');

        $this->redis->del('{zset}I');
        $this->assertTrue(2 === $this->redis->zInterStore('{zset}I', array('{zset}1', '{zset}2'), array(1, 1)));
        $this->assertTrue(array('val1', 'val3') === $this->redis->zRange('{zset}I', 0, -1));

        $this->redis->del('{zset}I');
        $this->assertTrue( 2 === $this->redis->zInterStore('{zset}I', array('{zset}1', '{zset}2', '{zset}3'), array(1, 5, 1), 'min'));
        $this->assertTrue(array('val1', 'val3') === $this->redis->zRange('{zset}I', 0, -1));
        $this->redis->del('{zset}I');
        $this->assertTrue( 2 === $this->redis->zInterStore('{zset}I', array('{zset}1', '{zset}2', '{zset}3'), array(1, 5, 1), 'max'));
        $this->assertTrue(array('val3', 'val1') === $this->redis->zRange('{zset}I', 0, -1));

        $this->redis->del('{zset}I');
        $this->assertTrue(2 === $this->redis->zInterStore('{zset}I', array('{zset}1', '{zset}2', '{zset}3'), null, 'max'));
        $this->assertTrue($this->redis->zScore('{zset}I', 'val1') === floatval(7));

        // zrank, zrevrank
        $this->redis->del('z');
        $this->redis->zadd('z', 1, 'one');
        $this->redis->zadd('z', 2, 'two');
        $this->redis->zadd('z', 5, 'five');

        $this->assertTrue(0 === $this->redis->zRank('z', 'one'));
        $this->assertTrue(1 === $this->redis->zRank('z', 'two'));
        $this->assertTrue(2 === $this->redis->zRank('z', 'five'));

        $this->assertTrue(2 === $this->redis->zRevRank('z', 'one'));
        $this->assertTrue(1 === $this->redis->zRevRank('z', 'two'));
        $this->assertTrue(0 === $this->redis->zRevRank('z', 'five'));
    }

    public function testHashes() {
        $this->redis->del('h', 'key');
        $this->assertTrue(0 === $this->redis->hLen('h'));
        $this->assertTrue(1 === $this->redis->hSet('h', 'a', 'a-value'));
        $this->assertTrue(1 === $this->redis->hLen('h'));
        $this->assertTrue(1 === $this->redis->hSet('h', 'b', 'b-value'));
        $this->assertTrue(2 === $this->redis->hLen('h'));

        $this->assertTrue('a-value' === $this->redis->hGet('h', 'a'));  // simple get
        $this->assertTrue('b-value' === $this->redis->hGet('h', 'b'));  // simple get

        $this->assertTrue(0 === $this->redis->hSet('h', 'a', 'another-value')); // replacement
        $this->assertTrue('another-value' === $this->redis->hGet('h', 'a'));    // get the new value

        $this->assertTrue('b-value' === $this->redis->hGet('h', 'b'));  // simple get
        $this->assertTrue(FALSE === $this->redis->hGet('h', 'c'));  // unknown hash member
        $this->assertTrue(FALSE === $this->redis->hGet('key', 'c'));    // unknownkey

        // hDel
        $this->assertTrue(1 === $this->redis->hDel('h', 'a')); // 1 on success
        $this->assertTrue(0 === $this->redis->hDel('h', 'a')); // 0 on failure

        $this->redis->del('h');
        $this->redis->hSet('h', 'x', 'a');
        $this->redis->hSet('h', 'y', 'b');
        $this->assertTrue(2 === $this->redis->hDel('h', 'x', 'y')); // variadic

        // hsetnx
        $this->redis->del('h');
        $this->assertTrue(TRUE === $this->redis->hSetNx('h', 'x', 'a'));
        $this->assertTrue(TRUE === $this->redis->hSetNx('h', 'y', 'b'));
        $this->assertTrue(FALSE === $this->redis->hSetNx('h', 'x', '?'));
        $this->assertTrue(FALSE === $this->redis->hSetNx('h', 'y', '?'));
        $this->assertTrue('a' === $this->redis->hGet('h', 'x'));
        $this->assertTrue('b' === $this->redis->hGet('h', 'y'));

        // keys
        $keys = $this->redis->hKeys('h');
        $this->assertTrue($keys === array('x', 'y') || $keys === array('y', 'x'));

        // values
        $values = $this->redis->hVals('h');
        $this->assertTrue($values === array('a', 'b') || $values === array('b', 'a'));

        // keys + values
        $all = $this->redis->hGetAll('h');
        $this->assertTrue($all === array('x' => 'a', 'y' => 'b') || $all === array('y' => 'b', 'x' => 'a'));

        // hExists
        $this->assertTrue(TRUE === $this->redis->hExists('h', 'x'));
        $this->assertTrue(TRUE === $this->redis->hExists('h', 'y'));
        $this->assertTrue(FALSE === $this->redis->hExists('h', 'w'));
        $this->redis->del('h');
        $this->assertTrue(FALSE === $this->redis->hExists('h', 'x'));

        // hIncrBy
        $this->redis->del('h');
        $this->assertTrue(2 === $this->redis->hIncrBy('h', 'x', 2));
        $this->assertTrue(3 === $this->redis->hIncrBy('h', 'x', 1));
        $this->assertTrue(2 === $this->redis->hIncrBy('h', 'x', -1));
        $this->assertTrue("2" === $this->redis->hGet('h', 'x'));

        $this->redis->hSet('h', 'y', 'not-a-number');
        $this->assertTrue(FALSE === $this->redis->hIncrBy('h', 'y', 1));

        if (version_compare($this->version, "2.5.0", "ge")) {
            // hIncrByFloat
            $this->redis->del('h');
            $this->assertTrue(1.5 === $this->redis->hIncrByFloat('h','x', 1.5));
            $this->assertTrue(3.0 === $this->redis->hincrByFloat('h','x', 1.5));
            $this->assertTrue(1.5 === $this->redis->hincrByFloat('h','x', -1.5));

            $this->redis->hset('h','y','not-a-number');
            $this->assertTrue(FALSE === $this->redis->hIncrByFloat('h', 'y', 1.5));
        }

        // hmset
        $this->redis->del('h');
        $this->assertTrue(TRUE === $this->redis->hMset('h', array('x' => 123, 'y' => 456, 'z' => 'abc')));
        $this->assertTrue('123' === $this->redis->hGet('h', 'x'));
        $this->assertTrue('456' === $this->redis->hGet('h', 'y'));
        $this->assertTrue('abc' === $this->redis->hGet('h', 'z'));
        $this->assertTrue(FALSE === $this->redis->hGet('h', 't'));

        // hmget
        $this->assertTrue(array('x' => '123', 'y' => '456') === $this->redis->hMget('h', array('x', 'y')));
        $this->assertTrue(array('z' => 'abc') === $this->redis->hMget('h', array('z')));
        $this->assertTrue(array('x' => '123', 't' => FALSE, 'y' => '456') === $this->redis->hMget('h', array('x', 't', 'y')));
        $this->assertFalse(array(123 => 'x') === $this->redis->hMget('h', array(123)));
        $this->assertTrue(array(123 => FALSE) === $this->redis->hMget('h', array(123)));

        // Test with an array populated with things we can't use as keys
        $this->assertTrue($this->redis->hmget('h', Array(false,NULL,false)) === FALSE);

        // Test with some invalid keys mixed in (which should just be ignored)
        $this->assertTrue(array('x'=>'123','y'=>'456','z'=>'abc') === $this->redis->hMget('h',Array('x',null,'y','','z',false)));

        // hmget/hmset with numeric fields
        $this->redis->del('h');
        $this->assertTrue(TRUE === $this->redis->hMset('h', array(123 => 'x', 'y' => 456)));
        $this->assertTrue('x' === $this->redis->hGet('h', 123));
        $this->assertTrue('x' === $this->redis->hGet('h', '123'));
        $this->assertTrue('456' === $this->redis->hGet('h', 'y'));
        $this->assertTrue(array(123 => 'x', 'y' => '456') === $this->redis->hMget('h', array('123', 'y')));

        // check non-string types.
        $this->redis->del('h1');
        $this->assertTrue(TRUE === $this->redis->hMSet('h1', array('x' => 0, 'y' => array(), 'z' => new stdclass(), 't' => NULL)));
        $h1 = $this->redis->hGetAll('h1');
        $this->assertTrue('0' === $h1['x']);
        $this->assertTrue('Array' === $h1['y']);
        $this->assertTrue('Object' === $h1['z']);
        $this->assertTrue('' === $h1['t']);
    }

    public function testSetRange() {

        $this->redis->del('key');
        $this->redis->set('key', 'hello world');
        $this->redis->setRange('key', 6, 'redis');
        $this->assertTrue('hello redis' === $this->redis->get('key'));
        $this->redis->setRange('key', 6, 'you'); // don't cut off the end
        $this->assertTrue('hello youis' === $this->redis->get('key'));

        $this->redis->set('key', 'hello world');
        // $this->assertTrue(11 === $this->redis->setRange('key', -6, 'redis')); // works with negative offsets too! (disabled because not all versions support this)
        // $this->assertTrue('hello redis' === $this->redis->get('key'));

        // fill with zeros if needed
        $this->redis->del('key');
        $this->redis->setRange('key', 6, 'foo');
        $this->assertTrue("\x00\x00\x00\x00\x00\x00foo" === $this->redis->get('key'));
    }

    public function testObject() {
        /* Version 3.0.0 (represented as >= 2.9.0 in redis info)  and moving
         * forward uses "embstr" instead of "raw" for small string values */
        if (version_compare($this->version, "2.9.0", "lt")) {
            $str_small_encoding = "raw";
        } else {
            $str_small_encoding = "embstr";
        }

        $this->redis->del('key');
        $this->assertTrue($this->redis->object('encoding', 'key') === FALSE);
        $this->assertTrue($this->redis->object('refcount', 'key') === FALSE);
        $this->assertTrue($this->redis->object('idletime', 'key') === FALSE);

        $this->redis->set('key', 'value');
        $this->assertTrue($this->redis->object('encoding', 'key') === $str_small_encoding);
        $this->assertTrue($this->redis->object('refcount', 'key') === 1);
        $this->assertTrue($this->redis->object('idletime', 'key') === 0);

        $this->redis->del('key');
        $this->redis->lpush('key', 'value');

        /* Newer versions of redis are going to encode lists as 'quicklists',
         * so 'quicklist' or 'ziplist' is valid here */
        $str_encoding = $this->redis->object('encoding', 'key');
        $this->assertTrue($str_encoding === "ziplist" || $str_encoding === 'quicklist');

        $this->assertTrue($this->redis->object('refcount', 'key') === 1);
        $this->assertTrue($this->redis->object('idletime', 'key') === 0);

        $this->redis->del('key');
        $this->redis->sadd('key', 'value');
        $this->assertTrue($this->redis->object('encoding', 'key') === "hashtable");
        $this->assertTrue($this->redis->object('refcount', 'key') === 1);
        $this->assertTrue($this->redis->object('idletime', 'key') === 0);

        $this->redis->del('key');
        $this->redis->sadd('key', 42);
        $this->redis->sadd('key', 1729);
        $this->assertTrue($this->redis->object('encoding', 'key') === "intset");
        $this->assertTrue($this->redis->object('refcount', 'key') === 1);
        $this->assertTrue($this->redis->object('idletime', 'key') === 0);

        $this->redis->del('key');
        $this->redis->lpush('key', str_repeat('A', pow(10,6))); // 1M elements, too big for a ziplist.

        $str_encoding = $this->redis->object('encoding', 'key');
        $this->assertTrue($str_encoding === "linkedlist" || $str_encoding == "quicklist");

        $this->assertTrue($this->redis->object('refcount', 'key') === 1);
        $this->assertTrue($this->redis->object('idletime', 'key') === 0);
    }

    public function testMultiExec() {
        $this->sequence(Redis::MULTI);
        $this->differentType(Redis::MULTI);

        // with prefix as well
        $this->redis->setOption(Redis::OPT_PREFIX, "test:");
        $this->sequence(Redis::MULTI);
        $this->differentType(Redis::MULTI);
        $this->redis->setOption(Redis::OPT_PREFIX, "");

        $this->redis->set('x', '42');

        $this->assertTrue(TRUE === $this->redis->watch('x'));
        $ret = $this->redis->multi()->get('x')->exec();

        // successful transaction
        $this->assertTrue($ret === array('42'));
    }

    public function testFailedTransactions() {
        $this->redis->set('x', 42);
    
        // failed transaction
        $this->redis->watch('x');

        $r = $this->newInstance(); // new instance, modifying `x'.
        $r->incr('x');

        $ret = $this->redis->multi()->get('x')->exec();
        $this->assertTrue($ret === FALSE); // failed because another client changed our watched key between WATCH and EXEC.

        // watch and unwatch
        $this->redis->watch('x');
        $r->incr('x'); // other instance
        $this->redis->unwatch(); // cancel transaction watch

        $ret = $this->redis->multi()->get('x')->exec();

        $this->assertTrue($ret === array('44')); // succeeded since we've cancel the WATCH command.
    }

    public function testPipeline() {
        if (!$this->havePipeline()) {
            $this->markTestSkipped();
        }

        $this->sequence(Redis::PIPELINE);
        $this->differentType(Redis::PIPELINE);

        // with prefix as well
        $this->redis->setOption(Redis::OPT_PREFIX, "test:");
        $this->sequence(Redis::PIPELINE);
        $this->differentType(Redis::PIPELINE);
        $this->redis->setOption(Redis::OPT_PREFIX, "");
    }

    protected function sequence($mode) {
        $ret = $this->redis->multi($mode)
            ->set('x', 42)
            ->type('x')
            ->get('x')
            ->exec();

        $this->assertTrue(is_array($ret));
        $i = 0;
        $this->assertTrue($ret[$i++] == TRUE);
        $this->assertTrue($ret[$i++] === Redis::REDIS_STRING);
        $this->assertTrue($ret[$i] === '42' || $ret[$i] === 42);

        $serializer = $this->redis->getOption(Redis::OPT_SERIALIZER);
        $this->redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_NONE); // testing incr, which doesn't work with the serializer
        $ret = $this->redis->multi($mode)
            ->del('{key}1')
            ->set('{key}1', 'value1')
            ->get('{key}1')
            ->getSet('{key}1', 'value2')
            ->get('{key}1')
            ->set('{key}2', 4)
            ->incr('{key}2')
            ->get('{key}2')
            ->decr('{key}2')
            ->get('{key}2')
            ->rename('{key}2', '{key}3')
            ->get('{key}3')
            ->renameNx('{key}3', '{key}1')
            ->rename('{key}3', '{key}2')
            ->incrby('{key}2', 5)
            ->get('{key}2')
            ->decrby('{key}2', 5)
            ->get('{key}2')
            ->exec();

        $i = 0;
        $this->assertTrue(is_array($ret));
        $this->assertTrue(is_long($ret[$i++]));
        $this->assertTrue($ret[$i++] == TRUE);
        $this->assertTrue($ret[$i++] == 'value1');
        $this->assertTrue($ret[$i++] == 'value1');
        $this->assertTrue($ret[$i++] == 'value2');
        $this->assertTrue($ret[$i++] == TRUE);
        $this->assertTrue($ret[$i++] == 5);
        $this->assertTrue($ret[$i++] == 5);
        $this->assertTrue($ret[$i++] == 4);
        $this->assertTrue($ret[$i++] == 4);
        $this->assertTrue($ret[$i++] == TRUE);
        $this->assertTrue($ret[$i++] == 4);
        $this->assertTrue($ret[$i++] == FALSE);
        $this->assertTrue($ret[$i++] == TRUE);
        $this->assertTrue($ret[$i++] == TRUE);
        $this->assertTrue($ret[$i++] == 9);
        $this->assertTrue($ret[$i++] == TRUE);
        $this->assertTrue($ret[$i++] == 4);
        $this->assertTrue(count($ret) == $i);

        $this->redis->setOption(Redis::OPT_SERIALIZER, $serializer);

        $ret = $this->redis->multi($mode)
            ->del('{key}1')
            ->del('{key}2')
            ->set('{key}1', 'val1')
            ->setnx('{key}1', 'valX')
            ->setnx('{key}2', 'valX')
            ->exists('{key}1')
            ->exists('{key}3')
            ->exec();

        $this->assertTrue(is_array($ret));
        $this->assertTrue($ret[0] == TRUE);
        $this->assertTrue($ret[1] == TRUE);
        $this->assertTrue($ret[2] == TRUE);
        $this->assertTrue($ret[3] == FALSE);
        $this->assertTrue($ret[4] == TRUE);
        $this->assertTrue($ret[5] == TRUE);
        $this->assertTrue($ret[6] == FALSE);

        // ttl, mget, mset, msetnx, expire, expireAt
        $this->redis->del('key');
        $ret = $this->redis->multi($mode)
            ->ttl('key')
            ->mget(array('{key}1', '{key}2', '{key}3'))
            ->mset(array('{key}3' => 'value3', 'key4' => 'value4'))
            ->set('key', 'value')
            ->expire('key', 5)
            ->ttl('key')
            ->expireAt('key', '0000')
            ->exec();
        
        $this->assertTrue(is_array($ret));
        $i = 0;
        $ttl = $ret[$i++];
        $this->assertTrue($ttl === -1 || $ttl === -2);
        $this->assertTrue($ret[$i++] === array('val1', 'valX', FALSE)); // mget
        $this->assertTrue($ret[$i++] === TRUE); // mset
        $this->assertTrue($ret[$i++] === TRUE); // set
        $this->assertTrue($ret[$i++] === TRUE); // expire
        $this->assertTrue($ret[$i++] === 5);    // ttl
        $this->assertTrue($ret[$i++] === TRUE); // expireAt
        $this->assertTrue(count($ret) == $i);

        $ret = $this->redis->multi($mode)
            ->set('{list}lkey', 'x')
            ->set('{list}lDest', 'y')
            ->del('{list}lkey', '{list}lDest')
            ->rpush('{list}lkey', 'lvalue')
            ->lpush('{list}lkey', 'lvalue')
            ->lpush('{list}lkey', 'lvalue')
            ->lpush('{list}lkey', 'lvalue')
            ->lpush('{list}lkey', 'lvalue')
            ->lpush('{list}lkey', 'lvalue')
            ->rpoplpush('{list}lkey', '{list}lDest')
            ->lrange('{list}lDest', 0, -1)
            ->lpop('{list}lkey')
            ->llen('{list}lkey')
            ->lrem('{list}lkey', 'lvalue', 3)
            ->llen('{list}lkey')
            ->lget('{list}lkey', 0)
            ->lrange('{list}lkey', 0, -1)
            ->lSet('{list}lkey', 1, "newValue")    // check errors on key not exists
            ->lrange('{list}lkey', 0, -1)
            ->llen('{list}lkey')
            ->exec();

        $this->assertTrue(is_array($ret));
        $i = 0;
        $this->assertTrue($ret[$i++] === TRUE); // SET
        $this->assertTrue($ret[$i++] === TRUE); // SET
        $this->assertTrue($ret[$i++] === 2); // deleting 2 keys
        $this->assertTrue($ret[$i++] === 1); // rpush, now 1 element
        $this->assertTrue($ret[$i++] === 2); // lpush, now 2 elements
        $this->assertTrue($ret[$i++] === 3); // lpush, now 3 elements
        $this->assertTrue($ret[$i++] === 4); // lpush, now 4 elements
        $this->assertTrue($ret[$i++] === 5); // lpush, now 5 elements
        $this->assertTrue($ret[$i++] === 6); // lpush, now 6 elements
        $this->assertTrue($ret[$i++] === 'lvalue'); // rpoplpush returns the element: "lvalue"
        $this->assertTrue($ret[$i++] === array('lvalue')); // lDest contains only that one element.
        $this->assertTrue($ret[$i++] === 'lvalue'); // removing a second element from lkey, now 4 elements left ↓
        $this->assertTrue($ret[$i++] === 4); // 4 elements left, after 2 pops.
        $this->assertTrue($ret[$i++] === 3); // removing 3 elements, now 1 left.
        $this->assertTrue($ret[$i++] === 1); // 1 element left
        $this->assertTrue($ret[$i++] === "lvalue"); // this is the current head.
        $this->assertTrue($ret[$i++] === array("lvalue")); // this is the current list.
        $this->assertTrue($ret[$i++] === FALSE); // updating a non-existent element fails.
        $this->assertTrue($ret[$i++] === array("lvalue")); // this is the current list.
        $this->assertTrue($ret[$i++] === 1); // 1 element left
        $this->assertTrue(count($ret) == $i);


        $ret = $this->redis->multi($mode)
            ->del('{list}lkey', '{list}lDest')
            ->rpush('{list}lkey', 'lvalue')
            ->lpush('{list}lkey', 'lvalue')
            ->lpush('{list}lkey', 'lvalue')
            ->rpoplpush('{list}lkey', '{list}lDest')
            ->lrange('{list}lDest', 0, -1)
            ->lpop('{list}lkey')
            ->exec();
        $this->assertTrue(is_array($ret));
        $i = 0;
        $this->assertTrue($ret[$i++] <= 2); // deleted 0, 1, or 2 items
        $this->assertTrue($ret[$i++] === 1); // 1 element in the list
        $this->assertTrue($ret[$i++] === 2); // 2 elements in the list
        $this->assertTrue($ret[$i++] === 3); // 3 elements in the list
        $this->assertTrue($ret[$i++] === 'lvalue'); // rpoplpush returns the element: "lvalue"
        $this->assertTrue($ret[$i++] === array('lvalue')); // rpoplpush returns the element: "lvalue"
        $this->assertTrue($ret[$i++] === 'lvalue'); // pop returns the front element: "lvalue"
        $this->assertTrue(count($ret) == $i);


        $serializer = $this->redis->getOption(Redis::OPT_SERIALIZER);
        $this->redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_NONE); // testing incr, which doesn't work with the serializer
        $ret = $this->redis->multi($mode)
            ->del('{key}1')
            ->set('{key}1', 'value1')
            ->get('{key}1')
            ->getSet('{key}1', 'value2')
            ->get('{key}1')
            ->set('{key}2', 4)
            ->incr('{key}2')
            ->get('{key}2')
            ->decr('{key}2')
            ->get('{key}2')
            ->rename('{key}2', '{key}3')
            ->get('{key}3')
            ->renameNx('{key}3', '{key}1')
            ->rename('{key}3', '{key}2')
            ->incrby('{key}2', 5)
            ->get('{key}2')
            ->decrby('{key}2', 5)
            ->get('{key}2')
            ->set('{key}3', 'value3')
            ->exec();

        $i = 0;
        $this->assertTrue(is_array($ret));
        $this->assertTrue(is_long($ret[$i]) && $ret[$i] <= 1); $i++;
        $this->assertTrue($ret[$i++] == TRUE);
        $this->assertTrue($ret[$i++] == 'value1');
        $this->assertTrue($ret[$i++] == 'value1');
        $this->assertTrue($ret[$i++] == 'value2');
        $this->assertTrue($ret[$i++] == TRUE);
        $this->assertTrue($ret[$i++] == 5);
        $this->assertTrue($ret[$i++] == 5);
        $this->assertTrue($ret[$i++] == 4);
        $this->assertTrue($ret[$i++] == 4);
        $this->assertTrue($ret[$i++] == TRUE);
        $this->assertTrue($ret[$i++] == 4);
        $this->assertTrue($ret[$i++] == FALSE);
        $this->assertTrue($ret[$i++] == TRUE);
        $this->assertTrue($ret[$i++] == TRUE);
        $this->assertTrue($ret[$i++] == 9);
        $this->assertTrue($ret[$i++] == TRUE);
        $this->assertTrue($ret[$i++] == 4);
        $this->assertTrue($ret[$i++]);
        $this->redis->setOption(Redis::OPT_SERIALIZER, $serializer);

        $ret = $this->redis->multi($mode)
            ->del('{key}1')
            ->del('{key}2')
            ->del('{key}3')
            ->set('{key}1', 'val1')
            ->setnx('{key}1', 'valX')
            ->setnx('{key}2', 'valX')
            ->exists('{key}1')
            ->exists('{key}3')
            ->exec();

        $this->assertTrue(is_array($ret));
        $this->assertTrue($ret[0] == TRUE);
        $this->assertTrue($ret[1] == TRUE);
        $this->assertTrue($ret[2] == TRUE);
        $this->assertTrue($ret[3] == TRUE);
        $this->assertTrue($ret[4] == FALSE);
        $this->assertTrue($ret[5] == TRUE);
        $this->assertTrue($ret[6] == TRUE);
        $this->assertTrue($ret[7] == FALSE);

        // ttl, mget, mset, msetnx, expire, expireAt
        $ret = $this->redis->multi($mode)
            ->ttl('key')
            ->mget(array('{key}1', '{key}2', '{key}3'))
            ->mset(array('{key}3' => 'value3', '{key}4' => 'value4'))
            ->set('key', 'value')
            ->expire('key', 5)
            ->ttl('key')
            ->expireAt('key', '0000')
            ->exec();
        $i = 0;
        $this->assertTrue(is_array($ret));
        $this->assertTrue(is_long($ret[$i++]));
        $this->assertTrue(is_array($ret[$i]) && count($ret[$i]) === 3); // mget
        $i++;
        $this->assertTrue($ret[$i++] === TRUE); // mset always returns TRUE
        $this->assertTrue($ret[$i++] === TRUE); // set always returns TRUE
        $this->assertTrue($ret[$i++] === TRUE); // expire always returns TRUE
        $this->assertTrue($ret[$i++] === 5); // TTL was just set.
        $this->assertTrue($ret[$i++] === TRUE); // expireAt returns TRUE for an existing key
        $this->assertTrue(count($ret) === $i);

        // lists
        $ret = $this->redis->multi($mode)
            ->del('{l}key', '{l}Dest')
            ->rpush('{l}key', 'lvalue')
            ->lpush('{l}key', 'lvalue')
            ->lpush('{l}key', 'lvalue')
            ->lpush('{l}key', 'lvalue')
            ->lpush('{l}key', 'lvalue')
            ->lpush('{l}key', 'lvalue')
            ->rpoplpush('{l}key', '{l}Dest')
            ->lrange('{l}Dest', 0, -1)
            ->lpop('{l}key')
            ->llen('{l}key')
            ->lrem('{l}key', 'lvalue', 3)
            ->llen('{l}key')
            ->lget('{l}key', 0)
            ->lrange('{l}key', 0, -1)
            ->lSet('{l}key', 1, "newValue")    // check errors on missing key
            ->lrange('{l}key', 0, -1)
            ->llen('{l}key')
            ->exec();

        $this->assertTrue(is_array($ret));
        $i = 0;
        $this->assertTrue($ret[$i] >= 0 && $ret[$i] <= 2); // delete
        $i++;
        $this->assertTrue($ret[$i++] === 1); // 1 value
        $this->assertTrue($ret[$i++] === 2); // 2 values
        $this->assertTrue($ret[$i++] === 3); // 3 values
        $this->assertTrue($ret[$i++] === 4); // 4 values
        $this->assertTrue($ret[$i++] === 5); // 5 values
        $this->assertTrue($ret[$i++] === 6); // 6 values
        $this->assertTrue($ret[$i++] === 'lvalue');
        $this->assertTrue($ret[$i++] === array('lvalue')); // 1 value only in lDest
        $this->assertTrue($ret[$i++] === 'lvalue'); // now 4 values left
        $this->assertTrue($ret[$i++] === 4);
        $this->assertTrue($ret[$i++] === 3); // removing 3 elements.
        $this->assertTrue($ret[$i++] === 1); // length is now 1
        $this->assertTrue($ret[$i++] === 'lvalue'); // this is the head
        $this->assertTrue($ret[$i++] === array('lvalue')); // 1 value only in lkey
        $this->assertTrue($ret[$i++] === FALSE); // can't set list[1] if we only have a single value in it.
        $this->assertTrue($ret[$i++] === array('lvalue')); // the previous error didn't touch anything.
        $this->assertTrue($ret[$i++] === 1); // the previous error didn't change the length
        $this->assertTrue(count($ret) === $i);


        // sets
        $ret = $this->redis->multi($mode)
            ->del('{s}key1', '{s}key2', '{s}keydest', '{s}keyUnion', '{s}DiffDest')
            ->sadd('{s}key1', 'sValue1')
            ->sadd('{s}key1', 'sValue2')
            ->sadd('{s}key1', 'sValue3')
            ->sadd('{s}key1', 'sValue4')

            ->sadd('{s}key2', 'sValue1')
            ->sadd('{s}key2', 'sValue2')

            ->scard('{s}key1')
            ->srem('{s}key1', 'sValue2')
            ->scard('{s}key1')
            ->sMove('{s}key1', '{s}key2', 'sValue4')
            ->scard('{s}key2')
            ->sismember('{s}key2', 'sValue4')
            ->sMembers('{s}key1')
            ->sMembers('{s}key2')
            ->sInter('{s}key1', '{s}key2')
            ->sInterStore('{s}keydest', '{s}key1', '{s}key2')
            ->sMembers('{s}keydest')
            ->sUnion('{s}key2', '{s}keydest')
            ->sUnionStore('{s}keyUnion', '{s}key2', '{s}keydest')
            ->sMembers('{s}keyUnion')
            ->sDiff('{s}key1', '{s}key2')
            ->sDiffStore('{s}DiffDest', '{s}key1', '{s}key2')
            ->sMembers('{s}DiffDest')
            ->sPop('{s}key2')
            ->scard('{s}key2')
            ->exec();

        $i = 0;
        $this->assertTrue(is_array($ret));
        $this->assertTrue(is_long($ret[$i]) && $ret[$i] >= 0 && $ret[$i] <= 5); $i++; // deleted at most 5 values.
        $this->assertTrue($ret[$i++] === 1); // skey1 now has 1 element.
        $this->assertTrue($ret[$i++] === 1); // skey1 now has 2 elements.
        $this->assertTrue($ret[$i++] === 1); // skey1 now has 3 elements.
        $this->assertTrue($ret[$i++] === 1); // skey1 now has 4 elements.

        $this->assertTrue($ret[$i++] === 1); // skey2 now has 1 element.
        $this->assertTrue($ret[$i++] === 1); // skey2 now has 2 elements.

        $this->assertTrue($ret[$i++] === 4);
        $this->assertTrue($ret[$i++] === 1); // we did remove that value.
        $this->assertTrue($ret[$i++] === 3); // now 3 values only.
        $this->assertTrue($ret[$i++] === TRUE); // the move did succeed.
        $this->assertTrue($ret[$i++] === 3); // sKey2 now has 3 values.
        $this->assertTrue($ret[$i++] === TRUE); // sKey2 does contain sValue4.
        foreach(array('sValue1', 'sValue3') as $k) { // sKey1 contains sValue1 and sValue3.
            $this->assertTrue(in_array($k, $ret[$i]));
        }
        $this->assertTrue(count($ret[$i++]) === 2);
        foreach(array('sValue1', 'sValue2', 'sValue4') as $k) { // sKey2 contains sValue1, sValue2, and sValue4.
            $this->assertTrue(in_array($k, $ret[$i]));
        }
        $this->assertTrue(count($ret[$i++]) === 3);
        $this->assertTrue($ret[$i++] === array('sValue1')); // intersection
        $this->assertTrue($ret[$i++] === 1); // intersection + store → 1 value in the destination set.
        $this->assertTrue($ret[$i++] === array('sValue1')); // sinterstore destination contents

        foreach(array('sValue1', 'sValue2', 'sValue4') as $k) { // (skeydest U sKey2) contains sValue1, sValue2, and sValue4.
            $this->assertTrue(in_array($k, $ret[$i]));
        }
        $this->assertTrue(count($ret[$i++]) === 3); // union size

        $this->assertTrue($ret[$i++] === 3); // unionstore size
        foreach(array('sValue1', 'sValue2', 'sValue4') as $k) { // (skeyUnion) contains sValue1, sValue2, and sValue4.
            $this->assertTrue(in_array($k, $ret[$i]));
        }
        $this->assertTrue(count($ret[$i++]) === 3); // skeyUnion size

        $this->assertTrue($ret[$i++] === array('sValue3')); // diff skey1, skey2 : only sValue3 is not shared.
        $this->assertTrue($ret[$i++] === 1); // sdiffstore size == 1
        $this->assertTrue($ret[$i++] === array('sValue3')); // contents of sDiffDest

        $this->assertTrue(in_array($ret[$i++], array('sValue1', 'sValue2', 'sValue4'))); // we removed an element from sKey2
        $this->assertTrue($ret[$i++] === 2); // sKey2 now has 2 elements only.

        $this->assertTrue(count($ret) === $i);

        // sorted sets
        $ret = $this->redis->multi($mode)
            ->del('{z}key1', '{z}key2', '{z}key5', '{z}Inter', '{z}Union')
            ->zadd('{z}key1', 1, 'zValue1')
            ->zadd('{z}key1', 5, 'zValue5')
            ->zadd('{z}key1', 2, 'zValue2')
            ->zRange('{z}key1', 0, -1)
            ->zRem('{z}key1', 'zValue2')
            ->zRange('{z}key1', 0, -1)
            ->zadd('{z}key1', 11, 'zValue11')
            ->zadd('{z}key1', 12, 'zValue12')
            ->zadd('{z}key1', 13, 'zValue13')
            ->zadd('{z}key1', 14, 'zValue14')
            ->zadd('{z}key1', 15, 'zValue15')
            ->zRemRangeByScore('{z}key1', 11, 13)
            ->zrange('{z}key1', 0, -1)
            ->zRevRange('{z}key1', 0, -1)
            ->zRangeByScore('{z}key1', 1, 6)
            ->zCard('{z}key1')
            ->zScore('{z}key1', 'zValue15')
            ->zadd('{z}key2', 5, 'zValue5')
            ->zadd('{z}key2', 2, 'zValue2')
            ->zInterStore('{z}Inter', array('{z}key1', '{z}key2'))
            ->zRange('{z}key1', 0, -1)
            ->zRange('{z}key2', 0, -1)
            ->zRange('{z}Inter', 0, -1)
            ->zUnionStore('{z}Union', array('{z}key1', '{z}key2'))
            ->zRange('{z}Union', 0, -1)
            ->zadd('{z}key5', 5, 'zValue5')
            ->zIncrBy('{z}key5', 3, 'zValue5') // fix this
            ->zScore('{z}key5', 'zValue5')
            ->zScore('{z}key5', 'unknown')
            ->exec();

        $i = 0;
        $this->assertTrue(is_array($ret));
        $this->assertTrue(is_long($ret[$i]) && $ret[$i] >= 0 && $ret[$i] <= 5); $i++; // deleting at most 5 keys
        $this->assertTrue($ret[$i++] === 1);
        $this->assertTrue($ret[$i++] === 1);
        $this->assertTrue($ret[$i++] === 1);
        $this->assertTrue($ret[$i++] === array('zValue1', 'zValue2', 'zValue5'));
        $this->assertTrue($ret[$i++] === 1);
        $this->assertTrue($ret[$i++] === array('zValue1', 'zValue5'));
        $this->assertTrue($ret[$i++] === 1); // adding zValue11
        $this->assertTrue($ret[$i++] === 1); // adding zValue12
        $this->assertTrue($ret[$i++] === 1); // adding zValue13
        $this->assertTrue($ret[$i++] === 1); // adding zValue14
        $this->assertTrue($ret[$i++] === 1); // adding zValue15
        $this->assertTrue($ret[$i++] === 3); // deleted zValue11, zValue12, zValue13
        $this->assertTrue($ret[$i++] === array('zValue1', 'zValue5', 'zValue14', 'zValue15'));
        $this->assertTrue($ret[$i++] === array('zValue15', 'zValue14', 'zValue5', 'zValue1'));
        $this->assertTrue($ret[$i++] === array('zValue1', 'zValue5'));
        $this->assertTrue($ret[$i++] === 4); // 4 elements
        $this->assertTrue($ret[$i++] === 15.0);
        $this->assertTrue($ret[$i++] === 1); // added value
        $this->assertTrue($ret[$i++] === 1); // added value
        $this->assertTrue($ret[$i++] === 1); // zinter only has 1 value
        $this->assertTrue($ret[$i++] === array('zValue1', 'zValue5', 'zValue14', 'zValue15')); // {z}key1 contents
        $this->assertTrue($ret[$i++] === array('zValue2', 'zValue5')); // {z}key2 contents
        $this->assertTrue($ret[$i++] === array('zValue5')); // {z}inter contents
        $this->assertTrue($ret[$i++] === 5); // {z}Union has 5 values (1,2,5,14,15)
        $this->assertTrue($ret[$i++] === array('zValue1', 'zValue2', 'zValue5', 'zValue14', 'zValue15')); // {z}Union contents
        $this->assertTrue($ret[$i++] === 1); // added value to {z}key5, with score 5
        $this->assertTrue($ret[$i++] === 8.0); // incremented score by 3 → it is now 8.
        $this->assertTrue($ret[$i++] === 8.0); // current score is 8.
        $this->assertTrue($ret[$i++] === FALSE); // score for unknown element.

        $this->assertTrue(count($ret) === $i);

        // hash
        $ret = $this->redis->multi($mode)
            ->del('hkey1')
            ->hset('hkey1', 'key1', 'value1')
            ->hset('hkey1', 'key2', 'value2')
            ->hset('hkey1', 'key3', 'value3')
            ->hmget('hkey1', array('key1', 'key2', 'key3'))
            ->hget('hkey1', 'key1')
            ->hlen('hkey1')
            ->hdel('hkey1', 'key2')
            ->hdel('hkey1', 'key2')
            ->hexists('hkey1', 'key2')
            ->hkeys('hkey1')
            ->hvals('hkey1')
            ->hgetall('hkey1')
            ->hset('hkey1', 'valn', 1)
            ->hset('hkey1', 'val-fail', 'non-string')
            ->hget('hkey1', 'val-fail')
            ->exec();

        $i = 0;
        $this->assertTrue(is_array($ret));
        $this->assertTrue($ret[$i++] <= 1); // delete
        $this->assertTrue($ret[$i++] === 1); // added 1 element
        $this->assertTrue($ret[$i++] === 1); // added 1 element
        $this->assertTrue($ret[$i++] === 1); // added 1 element
        $this->assertTrue($ret[$i++] === array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3')); // hmget, 3 elements
        $this->assertTrue($ret[$i++] === 'value1'); // hget
        $this->assertTrue($ret[$i++] === 3); // hlen
        $this->assertTrue($ret[$i++] === 1); // hdel succeeded
        $this->assertTrue($ret[$i++] === 0); // hdel failed
        $this->assertTrue($ret[$i++] === FALSE); // hexists didn't find the deleted key
        $this->assertTrue($ret[$i] === array('key1', 'key3') || $ret[$i] === array('key3', 'key1')); $i++; // hkeys
        $this->assertTrue($ret[$i] === array('value1', 'value3') || $ret[$i] === array('value3', 'value1')); $i++; // hvals
        $this->assertTrue($ret[$i] === array('key1' => 'value1', 'key3' => 'value3') || $ret[$i] === array('key3' => 'value3', 'key1' => 'value1')); $i++; // hgetall
        $this->assertTrue($ret[$i++] === 1); // added 1 element
        $this->assertTrue($ret[$i++] === 1); // added the element, so 1.
        $this->assertTrue($ret[$i++] === 'non-string'); // hset succeeded
        $this->assertTrue(count($ret) === $i);

        $ret = $this->redis->multi($mode) // default to MULTI, not PIPELINE.
            ->del('test')
            ->set('test', 'xyz')
            ->get('test')
            ->exec();
        $i = 0;
        $this->assertTrue(is_array($ret));
        $this->assertTrue($ret[$i++] <= 1); // delete
        $this->assertTrue($ret[$i++] === TRUE); // added 1 element
        $this->assertTrue($ret[$i++] === 'xyz');
        $this->assertTrue(count($ret) === $i);

        // GitHub issue 78
        $this->redis->del('test');
        for($i = 1; $i <= 5; $i++)
            $this->redis->zadd('test', $i, (string)$i);

        $result = $this->redis->multi($mode)
            ->zscore('test', "1")
            ->zscore('test', "6")
            ->zscore('test', "8")
            ->zscore('test', "2")
            ->exec();

        $this->assertTrue($result === array(1.0, FALSE, FALSE, 2.0));
    }

    protected function differentType($mode) {

        // string
        $key = '{hash}string';
        $dkey = '{hash}' . __FUNCTION__;

        $ret = $this->redis->multi($mode)
            ->del($key)
            ->set($key, 'value')

            // lists I/F
            ->rPush($key, 'lvalue')
            ->lPush($key, 'lvalue')
            ->lLen($key)
            ->lPop($key)
            ->lrange($key, 0, -1)
            ->lTrim($key, 0, 1)
            ->lGet($key, 0)
            ->lSet($key, 0, "newValue")
            ->lrem($key, 'lvalue', 1)
            ->lPop($key)
            ->rPop($key)
            ->rPoplPush($key, $dkey . 'lkey1')

            // sets I/F
            ->sAdd($key, 'sValue1')
            ->srem($key, 'sValue1')
            ->sPop($key)
            ->sMove($key, $dkey . 'skey1', 'sValue1')

            ->scard($key)
            ->sismember($key, 'sValue1')
            ->sInter($key, $dkey . 'skey2')

            ->sUnion($key, $dkey . 'skey4')
            ->sDiff($key, $dkey . 'skey7')
            ->sMembers($key)
            ->sRandMember($key)

            // sorted sets I/F
            ->zAdd($key, 1, 'zValue1')
            ->zRem($key, 'zValue1')
            ->zIncrBy($key, 1, 'zValue1')
            ->zRank($key, 'zValue1')
            ->zRevRank($key, 'zValue1')
            ->zRange($key, 0, -1)
            ->zRevRange($key, 0, -1)
            ->zRangeByScore($key, 1, 2)
            ->zCount($key, 0, -1)
            ->zCard($key)
            ->zScore($key, 'zValue1')
            ->zRemRangeByRank($key, 1, 2)
            ->zRemRangeByScore($key, 1, 2)

            // hash I/F
            ->hSet($key, 'key1', 'value1')
            ->hGet($key, 'key1')
            ->hMGet($key, array('key1'))
            ->hMSet($key, array('key1' => 'value1'))
            ->hIncrBy($key, 'key2', 1)
            ->hExists($key, 'key2')
            ->hDel($key, 'key2')
            ->hLen($key)
            ->hKeys($key)
            ->hVals($key)
            ->hGetAll($key)

            ->exec();

        $i = 0;
        $this->assertTrue(is_array($ret));
        $this->assertTrue(is_long($ret[$i++])); // delete
        $this->assertTrue($ret[$i++] === TRUE); // set

        $this->assertTrue($ret[$i++] === FALSE); // rpush
        $this->assertTrue($ret[$i++] === FALSE); // lpush
        $this->assertTrue($ret[$i++] === FALSE); // llen
        $this->assertTrue($ret[$i++] === FALSE); // lpop
        $this->assertTrue($ret[$i++] === FALSE); // lgetrange
        $this->assertTrue($ret[$i++] === FALSE); // ltrim
        $this->assertTrue($ret[$i++] === FALSE); // lget
        $this->assertTrue($ret[$i++] === FALSE); // lset
        $this->assertTrue($ret[$i++] === FALSE); // lremove
        $this->assertTrue($ret[$i++] === FALSE); // lpop
        $this->assertTrue($ret[$i++] === FALSE); // rpop
        $this->assertTrue($ret[$i++] === FALSE); // rpoplush

        $this->assertTrue($ret[$i++] === FALSE); // sadd
        $this->assertTrue($ret[$i++] === FALSE); // sremove
        $this->assertTrue($ret[$i++] === FALSE); // spop
        $this->assertTrue($ret[$i++] === FALSE); // smove
        $this->assertTrue($ret[$i++] === FALSE); // ssize
        $this->assertTrue($ret[$i++] === FALSE); // scontains
        $this->assertTrue($ret[$i++] === FALSE); // sinter
        $this->assertTrue($ret[$i++] === FALSE); // sunion
        $this->assertTrue($ret[$i++] === FALSE); // sdiff
        $this->assertTrue($ret[$i++] === FALSE); // smembers
        $this->assertTrue($ret[$i++] === FALSE); // srandmember

        $this->assertTrue($ret[$i++] === FALSE); // zadd
        $this->assertTrue($ret[$i++] === FALSE); // zdelete
        $this->assertTrue($ret[$i++] === FALSE); // zincrby
        $this->assertTrue($ret[$i++] === FALSE); // zrank
        $this->assertTrue($ret[$i++] === FALSE); // zrevrank
        $this->assertTrue($ret[$i++] === FALSE); // zrange
        $this->assertTrue($ret[$i++] === FALSE); // zreverserange
        $this->assertTrue($ret[$i++] === FALSE); // zrangebyscore
        $this->assertTrue($ret[$i++] === FALSE); // zcount
        $this->assertTrue($ret[$i++] === FALSE); // zcard
        $this->assertTrue($ret[$i++] === FALSE); // zscore
        $this->assertTrue($ret[$i++] === FALSE); // zdeleterangebyrank
        $this->assertTrue($ret[$i++] === FALSE); // zdeleterangebyscore

        $this->assertTrue($ret[$i++] === FALSE); // hset
        $this->assertTrue($ret[$i++] === FALSE); // hget
        $this->assertTrue($ret[$i++] === FALSE); // hmget
        $this->assertTrue($ret[$i++] === FALSE); // hmset
        $this->assertTrue($ret[$i++] === FALSE); // hincrby
        $this->assertTrue($ret[$i++] === FALSE); // hexists
        $this->assertTrue($ret[$i++] === FALSE); // hdel
        $this->assertTrue($ret[$i++] === FALSE); // hlen
        $this->assertTrue($ret[$i++] === FALSE); // hkeys
        $this->assertTrue($ret[$i++] === FALSE); // hvals
        $this->assertTrue($ret[$i++] === FALSE); // hgetall

        $this->assertEquals($i, count($ret));

        // list
        $key = '{hash}list';
        $dkey = '{hash}' . __FUNCTION__;
        $ret = $this->redis->multi($mode)
            ->del($key)
            ->lpush($key, 'lvalue')

            // string I/F
            ->get($key)
            ->getset($key, 'value2')
            ->append($key, 'append')
            ->getRange($key, 0, 8)
            ->mget(array($key))
            ->incr($key)
            ->incrBy($key, 1)
            ->decr($key)
            ->decrBy($key, 1)

            // sets I/F
            ->sAdd($key, 'sValue1')
            ->srem($key, 'sValue1')
            ->sPop($key)
            ->sMove($key, $dkey . 'skey1', 'sValue1')
            ->scard($key)
            ->sismember($key, 'sValue1')
            ->sInter($key, $dkey . 'skey2')
            ->sUnion($key, $dkey . 'skey4')
            ->sDiff($key, $dkey . 'skey7')
            ->sMembers($key)
            ->sRandMember($key)

            // sorted sets I/F
            ->zAdd($key, 1, 'zValue1')
            ->zRem($key, 'zValue1')
            ->zIncrBy($key, 1, 'zValue1')
            ->zRank($key, 'zValue1')
            ->zRevRank($key, 'zValue1')
            ->zRange($key, 0, -1)
            ->zRevRange($key, 0, -1)
            ->zRangeByScore($key, 1, 2)
            ->zCount($key, 0, -1)
            ->zCard($key)
            ->zScore($key, 'zValue1')
            ->zRemRangeByRank($key, 1, 2)
            ->zRemRangeByScore($key, 1, 2)

            // hash I/F
            ->hSet($key, 'key1', 'value1')
            ->hGet($key, 'key1')
            ->hMGet($key, array('key1'))
            ->hMSet($key, array('key1' => 'value1'))
            ->hIncrBy($key, 'key2', 1)
            ->hExists($key, 'key2')
            ->hDel($key, 'key2')
            ->hLen($key)
            ->hKeys($key)
            ->hVals($key)
            ->hGetAll($key)

            ->exec();

        $i = 0;
        $this->assertTrue(is_array($ret));
        $this->assertTrue(is_long($ret[$i++])); // delete
        $this->assertTrue($ret[$i++] === 1); // lpush

        $this->assertTrue($ret[$i++] === FALSE); // get
        $this->assertTrue($ret[$i++] === FALSE); // getset
        $this->assertTrue($ret[$i++] === FALSE); // append
        $this->assertTrue($ret[$i++] === FALSE); // getRange
        $this->assertTrue(is_array($ret[$i]) && count($ret[$i]) === 1 && $ret[$i][0] === FALSE); // mget
        $i++;
        $this->assertTrue($ret[$i++] === FALSE); // incr
        $this->assertTrue($ret[$i++] === FALSE); // incrBy
        $this->assertTrue($ret[$i++] === FALSE); // decr
        $this->assertTrue($ret[$i++] === FALSE); // decrBy

        $this->assertTrue($ret[$i++] === FALSE); // sadd
        $this->assertTrue($ret[$i++] === FALSE); // sremove
        $this->assertTrue($ret[$i++] === FALSE); // spop
        $this->assertTrue($ret[$i++] === FALSE); // smove
        $this->assertTrue($ret[$i++] === FALSE); // ssize
        $this->assertTrue($ret[$i++] === FALSE); // scontains
        $this->assertTrue($ret[$i++] === FALSE); // sinter
        $this->assertTrue($ret[$i++] === FALSE); // sunion
        $this->assertTrue($ret[$i++] === FALSE); // sdiff
        $this->assertTrue($ret[$i++] === FALSE); // smembers
        $this->assertTrue($ret[$i++] === FALSE); // srandmember

        $this->assertTrue($ret[$i++] === FALSE); // zadd
        $this->assertTrue($ret[$i++] === FALSE); // zdelete
        $this->assertTrue($ret[$i++] === FALSE); // zincrby
        $this->assertTrue($ret[$i++] === FALSE); // zrank
        $this->assertTrue($ret[$i++] === FALSE); // zrevrank
        $this->assertTrue($ret[$i++] === FALSE); // zrange
        $this->assertTrue($ret[$i++] === FALSE); // zreverserange
        $this->assertTrue($ret[$i++] === FALSE); // zrangebyscore
        $this->assertTrue($ret[$i++] === FALSE); // zcount
        $this->assertTrue($ret[$i++] === FALSE); // zcard
        $this->assertTrue($ret[$i++] === FALSE); // zscore
        $this->assertTrue($ret[$i++] === FALSE); // zdeleterangebyrank
        $this->assertTrue($ret[$i++] === FALSE); // zdeleterangebyscore

        $this->assertTrue($ret[$i++] === FALSE); // hset
        $this->assertTrue($ret[$i++] === FALSE); // hget
        $this->assertTrue($ret[$i++] === FALSE); // hmget
        $this->assertTrue($ret[$i++] === FALSE); // hmset
        $this->assertTrue($ret[$i++] === FALSE); // hincrby
        $this->assertTrue($ret[$i++] === FALSE); // hexists
        $this->assertTrue($ret[$i++] === FALSE); // hdel
        $this->assertTrue($ret[$i++] === FALSE); // hlen
        $this->assertTrue($ret[$i++] === FALSE); // hkeys
        $this->assertTrue($ret[$i++] === FALSE); // hvals
        $this->assertTrue($ret[$i++] === FALSE); // hgetall

        $this->assertEquals($i, count($ret));

        // set
        $key = '{hash}set';
        $dkey = '{hash}' . __FUNCTION__;
        $ret = $this->redis->multi($mode)
            ->del($key)
            ->sAdd($key, 'sValue')

            // string I/F
            ->get($key)
            ->getset($key, 'value2')
            ->append($key, 'append')
            ->getRange($key, 0, 8)
            ->mget(array($key))
            ->incr($key)
            ->incrBy($key, 1)
            ->decr($key)
            ->decrBy($key, 1)

            // lists I/F
            ->rPush($key, 'lvalue')
            ->lPush($key, 'lvalue')
            ->lLen($key)
            ->lPop($key)
            ->lrange($key, 0, -1)
            ->lTrim($key, 0, 1)
            ->lGet($key, 0)
            ->lSet($key, 0, "newValue")
            ->lrem($key, 'lvalue', 1)
            ->lPop($key)
            ->rPop($key)
            ->rPoplPush($key, $dkey . 'lkey1')

            // sorted sets I/F
            ->zAdd($key, 1, 'zValue1')
            ->zRem($key, 'zValue1')
            ->zIncrBy($key, 1, 'zValue1')
            ->zRank($key, 'zValue1')
            ->zRevRank($key, 'zValue1')
            ->zRange($key, 0, -1)
            ->zRevRange($key, 0, -1)
            ->zRangeByScore($key, 1, 2)
            ->zCount($key, 0, -1)
            ->zCard($key)
            ->zScore($key, 'zValue1')
            ->zRemRangeByRank($key, 1, 2)
            ->zRemRangeByScore($key, 1, 2)

            // hash I/F
            ->hSet($key, 'key1', 'value1')
            ->hGet($key, 'key1')
            ->hMGet($key, array('key1'))
            ->hMSet($key, array('key1' => 'value1'))
            ->hIncrBy($key, 'key2', 1)
            ->hExists($key, 'key2')
            ->hDel($key, 'key2')
            ->hLen($key)
            ->hKeys($key)
            ->hVals($key)
            ->hGetAll($key)

            ->exec();

        $i = 0;
        $this->assertTrue(is_array($ret));
        $this->assertTrue(is_long($ret[$i++])); // delete
        $this->assertTrue($ret[$i++] === 1); // zadd

        $this->assertTrue($ret[$i++] === FALSE); // get
        $this->assertTrue($ret[$i++] === FALSE); // getset
        $this->assertTrue($ret[$i++] === FALSE); // append
        $this->assertTrue($ret[$i++] === FALSE); // getRange
        $this->assertTrue(is_array($ret[$i]) && count($ret[$i]) === 1 && $ret[$i][0] === FALSE); // mget
        $i++;
        $this->assertTrue($ret[$i++] === FALSE); // incr
        $this->assertTrue($ret[$i++] === FALSE); // incrBy
        $this->assertTrue($ret[$i++] === FALSE); // decr
        $this->assertTrue($ret[$i++] === FALSE); // decrBy

        $this->assertTrue($ret[$i++] === FALSE); // rpush
        $this->assertTrue($ret[$i++] === FALSE); // lpush
        $this->assertTrue($ret[$i++] === FALSE); // llen
        $this->assertTrue($ret[$i++] === FALSE); // lpop
        $this->assertTrue($ret[$i++] === FALSE); // lgetrange
        $this->assertTrue($ret[$i++] === FALSE); // ltrim
        $this->assertTrue($ret[$i++] === FALSE); // lget
        $this->assertTrue($ret[$i++] === FALSE); // lset
        $this->assertTrue($ret[$i++] === FALSE); // lremove
        $this->assertTrue($ret[$i++] === FALSE); // lpop
        $this->assertTrue($ret[$i++] === FALSE); // rpop
        $this->assertTrue($ret[$i++] === FALSE); // rpoplush

        $this->assertTrue($ret[$i++] === FALSE); // zadd
        $this->assertTrue($ret[$i++] === FALSE); // zdelete
        $this->assertTrue($ret[$i++] === FALSE); // zincrby
        $this->assertTrue($ret[$i++] === FALSE); // zrank
        $this->assertTrue($ret[$i++] === FALSE); // zrevrank
        $this->assertTrue($ret[$i++] === FALSE); // zrange
        $this->assertTrue($ret[$i++] === FALSE); // zreverserange
        $this->assertTrue($ret[$i++] === FALSE); // zrangebyscore
        $this->assertTrue($ret[$i++] === FALSE); // zcount
        $this->assertTrue($ret[$i++] === FALSE); // zcard
        $this->assertTrue($ret[$i++] === FALSE); // zscore
        $this->assertTrue($ret[$i++] === FALSE); // zdeleterangebyrank
        $this->assertTrue($ret[$i++] === FALSE); // zdeleterangebyscore

        $this->assertTrue($ret[$i++] === FALSE); // hset
        $this->assertTrue($ret[$i++] === FALSE); // hget
        $this->assertTrue($ret[$i++] === FALSE); // hmget
        $this->assertTrue($ret[$i++] === FALSE); // hmset
        $this->assertTrue($ret[$i++] === FALSE); // hincrby
        $this->assertTrue($ret[$i++] === FALSE); // hexists
        $this->assertTrue($ret[$i++] === FALSE); // hdel
        $this->assertTrue($ret[$i++] === FALSE); // hlen
        $this->assertTrue($ret[$i++] === FALSE); // hkeys
        $this->assertTrue($ret[$i++] === FALSE); // hvals
        $this->assertTrue($ret[$i++] === FALSE); // hgetall

        $this->assertEquals($i, count($ret));

        // sorted set
        $key = '{hash}sortedset';
        $dkey = '{hash}' . __FUNCTION__;
        $ret = $this->redis->multi($mode)
            ->del($key)
            ->zAdd($key, 0, 'zValue')

            // string I/F
            ->get($key)
            ->getset($key, 'value2')
            ->append($key, 'append')
            ->getRange($key, 0, 8)
            ->mget(array($key))
            ->incr($key)
            ->incrBy($key, 1)
            ->decr($key)
            ->decrBy($key, 1)

            // lists I/F
            ->rPush($key, 'lvalue')
            ->lPush($key, 'lvalue')
            ->lLen($key)
            ->lPop($key)
            ->lrange($key, 0, -1)
            ->lTrim($key, 0, 1)
            ->lGet($key, 0)
            ->lSet($key, 0, "newValue")
            ->lrem($key, 'lvalue', 1)
            ->lPop($key)
            ->rPop($key)
            ->rPoplPush($key, $dkey . 'lkey1')

            // sets I/F
            ->sAdd($key, 'sValue1')
            ->srem($key, 'sValue1')
            ->sPop($key)
            ->sMove($key, $dkey . 'skey1', 'sValue1')
            ->scard($key)
            ->sismember($key, 'sValue1')
            ->sInter($key, $dkey . 'skey2')
            ->sUnion($key, $dkey . 'skey4')
            ->sDiff($key, $dkey . 'skey7')
            ->sMembers($key)
            ->sRandMember($key)

            // hash I/F
            ->hSet($key, 'key1', 'value1')
            ->hGet($key, 'key1')
            ->hMGet($key, array('key1'))
            ->hMSet($key, array('key1' => 'value1'))
            ->hIncrBy($key, 'key2', 1)
            ->hExists($key, 'key2')
            ->hDel($key, 'key2')
            ->hLen($key)
            ->hKeys($key)
            ->hVals($key)
            ->hGetAll($key)

            ->exec();

        $i = 0;
        $this->assertTrue(is_array($ret));
        $this->assertTrue(is_long($ret[$i++])); // delete
        $this->assertTrue($ret[$i++] === 1); // zadd

        $this->assertTrue($ret[$i++] === FALSE); // get
        $this->assertTrue($ret[$i++] === FALSE); // getset
        $this->assertTrue($ret[$i++] === FALSE); // append
        $this->assertTrue($ret[$i++] === FALSE); // getRange
        $this->assertTrue(is_array($ret[$i]) && count($ret[$i]) === 1 && $ret[$i][0] === FALSE); // mget
        $i++;
        $this->assertTrue($ret[$i++] === FALSE); // incr
        $this->assertTrue($ret[$i++] === FALSE); // incrBy
        $this->assertTrue($ret[$i++] === FALSE); // decr
        $this->assertTrue($ret[$i++] === FALSE); // decrBy

        $this->assertTrue($ret[$i++] === FALSE); // rpush
        $this->assertTrue($ret[$i++] === FALSE); // lpush
        $this->assertTrue($ret[$i++] === FALSE); // llen
        $this->assertTrue($ret[$i++] === FALSE); // lpop
        $this->assertTrue($ret[$i++] === FALSE); // lgetrange
        $this->assertTrue($ret[$i++] === FALSE); // ltrim
        $this->assertTrue($ret[$i++] === FALSE); // lget
        $this->assertTrue($ret[$i++] === FALSE); // lset
        $this->assertTrue($ret[$i++] === FALSE); // lremove
        $this->assertTrue($ret[$i++] === FALSE); // lpop
        $this->assertTrue($ret[$i++] === FALSE); // rpop
        $this->assertTrue($ret[$i++] === FALSE); // rpoplush

        $this->assertTrue($ret[$i++] === FALSE); // sadd
        $this->assertTrue($ret[$i++] === FALSE); // sremove
        $this->assertTrue($ret[$i++] === FALSE); // spop
        $this->assertTrue($ret[$i++] === FALSE); // smove
        $this->assertTrue($ret[$i++] === FALSE); // ssize
        $this->assertTrue($ret[$i++] === FALSE); // scontains
        $this->assertTrue($ret[$i++] === FALSE); // sinter
        $this->assertTrue($ret[$i++] === FALSE); // sunion
        $this->assertTrue($ret[$i++] === FALSE); // sdiff
        $this->assertTrue($ret[$i++] === FALSE); // smembers
        $this->assertTrue($ret[$i++] === FALSE); // srandmember

        $this->assertTrue($ret[$i++] === FALSE); // hset
        $this->assertTrue($ret[$i++] === FALSE); // hget
        $this->assertTrue($ret[$i++] === FALSE); // hmget
        $this->assertTrue($ret[$i++] === FALSE); // hmset
        $this->assertTrue($ret[$i++] === FALSE); // hincrby
        $this->assertTrue($ret[$i++] === FALSE); // hexists
        $this->assertTrue($ret[$i++] === FALSE); // hdel
        $this->assertTrue($ret[$i++] === FALSE); // hlen
        $this->assertTrue($ret[$i++] === FALSE); // hkeys
        $this->assertTrue($ret[$i++] === FALSE); // hvals
        $this->assertTrue($ret[$i++] === FALSE); // hgetall

        $this->assertEquals($i, count($ret));

        // hash
        $key = '{hash}hash';
        $dkey = '{hash}' . __FUNCTION__;
        $ret = $this->redis->multi($mode)
            ->del($key)
            ->hset($key, 'key1', 'hValue')

            // string I/F
            ->get($key)
            ->getset($key, 'value2')
            ->append($key, 'append')
            ->getRange($key, 0, 8)
            ->mget(array($key))
            ->incr($key)
            ->incrBy($key, 1)
            ->decr($key)
            ->decrBy($key, 1)

            // lists I/F
            ->rPush($key, 'lvalue')
            ->lPush($key, 'lvalue')
            ->lLen($key)
            ->lPop($key)
            ->lrange($key, 0, -1)
            ->lTrim($key, 0, 1)
            ->lGet($key, 0)
            ->lSet($key, 0, "newValue")
            ->lrem($key, 'lvalue', 1)
            ->lPop($key)
            ->rPop($key)
            ->rPoplPush($key, $dkey . 'lkey1')

            // sets I/F
            ->sAdd($key, 'sValue1')
            ->srem($key, 'sValue1')
            ->sPop($key)
            ->sMove($key, $dkey . 'skey1', 'sValue1')
            ->scard($key)
            ->sismember($key, 'sValue1')
            ->sInter($key, $dkey . 'skey2')
            ->sUnion($key, $dkey . 'skey4')
            ->sDiff($key, $dkey . 'skey7')
            ->sMembers($key)
            ->sRandMember($key)

            // sorted sets I/F
            ->zAdd($key, 1, 'zValue1')
            ->zRem($key, 'zValue1')
            ->zIncrBy($key, 1, 'zValue1')
            ->zRank($key, 'zValue1')
            ->zRevRank($key, 'zValue1')
            ->zRange($key, 0, -1)
            ->zRevRange($key, 0, -1)
            ->zRangeByScore($key, 1, 2)
            ->zCount($key, 0, -1)
            ->zCard($key)
            ->zScore($key, 'zValue1')
            ->zRemRangeByRank($key, 1, 2)
            ->zRemRangeByScore($key, 1, 2)

            ->exec();

        $i = 0;
        $this->assertTrue(is_array($ret));
        $this->assertTrue(is_long($ret[$i++])); // delete
        $this->assertTrue($ret[$i++] === 1); // hset

        $this->assertTrue($ret[$i++] === FALSE); // get
        $this->assertTrue($ret[$i++] === FALSE); // getset
        $this->assertTrue($ret[$i++] === FALSE); // append
        $this->assertTrue($ret[$i++] === FALSE); // getRange
        $this->assertTrue(is_array($ret[$i]) && count($ret[$i]) === 1 && $ret[$i][0] === FALSE); // mget
        $i++;
        $this->assertTrue($ret[$i++] === FALSE); // incr
        $this->assertTrue($ret[$i++] === FALSE); // incrBy
        $this->assertTrue($ret[$i++] === FALSE); // decr
        $this->assertTrue($ret[$i++] === FALSE); // decrBy

        $this->assertTrue($ret[$i++] === FALSE); // rpush
        $this->assertTrue($ret[$i++] === FALSE); // lpush
        $this->assertTrue($ret[$i++] === FALSE); // llen
        $this->assertTrue($ret[$i++] === FALSE); // lpop
        $this->assertTrue($ret[$i++] === FALSE); // lgetrange
        $this->assertTrue($ret[$i++] === FALSE); // ltrim
        $this->assertTrue($ret[$i++] === FALSE); // lget
        $this->assertTrue($ret[$i++] === FALSE); // lset
        $this->assertTrue($ret[$i++] === FALSE); // lremove
        $this->assertTrue($ret[$i++] === FALSE); // lpop
        $this->assertTrue($ret[$i++] === FALSE); // rpop
        $this->assertTrue($ret[$i++] === FALSE); // rpoplush

        $this->assertTrue($ret[$i++] === FALSE); // sadd
        $this->assertTrue($ret[$i++] === FALSE); // sremove
        $this->assertTrue($ret[$i++] === FALSE); // spop
        $this->assertTrue($ret[$i++] === FALSE); // smove
        $this->assertTrue($ret[$i++] === FALSE); // ssize
        $this->assertTrue($ret[$i++] === FALSE); // scontains
        $this->assertTrue($ret[$i++] === FALSE); // sinter
        $this->assertTrue($ret[$i++] === FALSE); // sunion
        $this->assertTrue($ret[$i++] === FALSE); // sdiff
        $this->assertTrue($ret[$i++] === FALSE); // smembers
        $this->assertTrue($ret[$i++] === FALSE); // srandmember

        $this->assertTrue($ret[$i++] === FALSE); // zadd
        $this->assertTrue($ret[$i++] === FALSE); // zdelete
        $this->assertTrue($ret[$i++] === FALSE); // zincrby
        $this->assertTrue($ret[$i++] === FALSE); // zrank
        $this->assertTrue($ret[$i++] === FALSE); // zrevrank
        $this->assertTrue($ret[$i++] === FALSE); // zrange
        $this->assertTrue($ret[$i++] === FALSE); // zreverserange
        $this->assertTrue($ret[$i++] === FALSE); // zrangebyscore
        $this->assertTrue($ret[$i++] === FALSE); // zcount
        $this->assertTrue($ret[$i++] === FALSE); // zcard
        $this->assertTrue($ret[$i++] === FALSE); // zscore
        $this->assertTrue($ret[$i++] === FALSE); // zdeleterangebyrank
        $this->assertTrue($ret[$i++] === FALSE); // zdeleterangebyscore

        $this->assertEquals($i, count($ret));
    }

    public function testDifferentTypeString() {
        $key = '{hash}string';
        $dkey = '{hash}' . __FUNCTION__;

        $this->redis->del($key);
        $this->assertEquals(TRUE, $this->redis->set($key, 'value'));

        // lists I/F
        $this->assertEquals(FALSE, $this->redis->rPush($key, 'lvalue'));
        $this->assertEquals(FALSE, $this->redis->lPush($key, 'lvalue'));
        $this->assertEquals(FALSE, $this->redis->lLen($key));
        $this->assertEquals(FALSE, $this->redis->lPop($key));
        $this->assertEquals(FALSE, $this->redis->lrange($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->lTrim($key, 0, 1));
        $this->assertEquals(FALSE, $this->redis->lGet($key, 0));
        $this->assertEquals(FALSE, $this->redis->lSet($key, 0, "newValue"));
        $this->assertEquals(FALSE, $this->redis->lrem($key, 'lvalue', 1));
        $this->assertEquals(FALSE, $this->redis->lPop($key));
        $this->assertEquals(FALSE, $this->redis->rPop($key));
        $this->assertEquals(FALSE, $this->redis->rPoplPush($key, $dkey . 'lkey1'));

        // sets I/F
        $this->assertEquals(FALSE, $this->redis->sAdd($key, 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->srem($key, 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->sPop($key));
        $this->assertEquals(FALSE, $this->redis->sMove($key, $dkey . 'skey1', 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->scard($key));
        $this->assertEquals(FALSE, $this->redis->sismember($key, 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->sInter($key, $dkey. 'skey2'));
        $this->assertEquals(FALSE, $this->redis->sUnion($key, $dkey . 'skey4'));
        $this->assertEquals(FALSE, $this->redis->sDiff($key, $dkey . 'skey7'));
        $this->assertEquals(FALSE, $this->redis->sMembers($key));
        $this->assertEquals(FALSE, $this->redis->sRandMember($key));

        // sorted sets I/F
        $this->assertEquals(FALSE, $this->redis->zAdd($key, 1, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRem($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zIncrBy($key, 1, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRank($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRevRank($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRange($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->zRevRange($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->zRangeByScore($key, 1, 2));
        $this->assertEquals(FALSE, $this->redis->zCount($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->zCard($key));
        $this->assertEquals(FALSE, $this->redis->zScore($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRemRangeByRank($key, 1, 2));
        $this->assertEquals(FALSE, $this->redis->zRemRangeByScore($key, 1, 2));

        // hash I/F
        $this->assertEquals(FALSE, $this->redis->hSet($key, 'key1', 'value1'));
        $this->assertEquals(FALSE, $this->redis->hGet($key, 'key1'));
        $this->assertEquals(FALSE, $this->redis->hMGet($key, array('key1')));
        $this->assertEquals(FALSE, $this->redis->hMSet($key, array('key1' => 'value1')));
        $this->assertEquals(FALSE, $this->redis->hIncrBy($key, 'key2', 1));
        $this->assertEquals(FALSE, $this->redis->hExists($key, 'key2'));
        $this->assertEquals(FALSE, $this->redis->hDel($key, 'key2'));
        $this->assertEquals(FALSE, $this->redis->hLen($key));
        $this->assertEquals(FALSE, $this->redis->hKeys($key));
        $this->assertEquals(FALSE, $this->redis->hVals($key));
        $this->assertEquals(FALSE, $this->redis->hGetAll($key));
    }

    public function testDifferentTypeList() {
        $key = '{hash}list';
        $dkey = '{hash}' . __FUNCTION__;

        $this->redis->del($key);
        $this->assertEquals(1, $this->redis->lPush($key, 'value'));

        // string I/F
        $this->assertEquals(FALSE, $this->redis->get($key));
        $this->assertEquals(FALSE, $this->redis->getset($key, 'value2'));
        $this->assertEquals(FALSE, $this->redis->append($key, 'append'));
        $this->assertEquals(FALSE, $this->redis->getRange($key, 0, 8));
        $this->assertEquals(array(FALSE), $this->redis->mget(array($key)));
        $this->assertEquals(FALSE, $this->redis->incr($key));
        $this->assertEquals(FALSE, $this->redis->incrBy($key, 1));
        $this->assertEquals(FALSE, $this->redis->decr($key));
        $this->assertEquals(FALSE, $this->redis->decrBy($key, 1));

        // sets I/F
        $this->assertEquals(FALSE, $this->redis->sAdd($key, 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->srem($key, 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->sPop($key));
        $this->assertEquals(FALSE, $this->redis->sMove($key, $dkey . 'skey1', 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->scard($key));
        $this->assertEquals(FALSE, $this->redis->sismember($key, 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->sInter($key, $dkey . 'skey2'));
        $this->assertEquals(FALSE, $this->redis->sUnion($key, $dkey . 'skey4'));
        $this->assertEquals(FALSE, $this->redis->sDiff($key, $dkey . 'skey7'));
        $this->assertEquals(FALSE, $this->redis->sMembers($key));
        $this->assertEquals(FALSE, $this->redis->sRandMember($key));

        // sorted sets I/F
        $this->assertEquals(FALSE, $this->redis->zAdd($key, 1, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRem($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zIncrBy($key, 1, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRank($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRevRank($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRange($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->zRevRange($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->zRangeByScore($key, 1, 2));
        $this->assertEquals(FALSE, $this->redis->zCount($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->zCard($key));
        $this->assertEquals(FALSE, $this->redis->zScore($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRemRangeByRank($key, 1, 2));
        $this->assertEquals(FALSE, $this->redis->zRemRangeByScore($key, 1, 2));

        // hash I/F
        $this->assertEquals(FALSE, $this->redis->hSet($key, 'key1', 'value1'));
        $this->assertEquals(FALSE, $this->redis->hGet($key, 'key1'));
        $this->assertEquals(FALSE, $this->redis->hMGet($key, array('key1')));
        $this->assertEquals(FALSE, $this->redis->hMSet($key, array('key1' => 'value1')));
        $this->assertEquals(FALSE, $this->redis->hIncrBy($key, 'key2', 1));
        $this->assertEquals(FALSE, $this->redis->hExists($key, 'key2'));
        $this->assertEquals(FALSE, $this->redis->hDel($key, 'key2'));
        $this->assertEquals(FALSE, $this->redis->hLen($key));
        $this->assertEquals(FALSE, $this->redis->hKeys($key));
        $this->assertEquals(FALSE, $this->redis->hVals($key));
        $this->assertEquals(FALSE, $this->redis->hGetAll($key));
    }

    public function testDifferentTypeSet() {
        $key = '{hash}set';
        $dkey = '{hash}' . __FUNCTION__;
        $this->redis->del($key);
        $this->assertEquals(1, $this->redis->sAdd($key, 'value'));

        // string I/F
        $this->assertEquals(FALSE, $this->redis->get($key));
        $this->assertEquals(FALSE, $this->redis->getset($key, 'value2'));
        $this->assertEquals(FALSE, $this->redis->append($key, 'append'));
        $this->assertEquals(FALSE, $this->redis->getRange($key, 0, 8));
        $this->assertEquals(array(FALSE), $this->redis->mget(array($key)));
        $this->assertEquals(FALSE, $this->redis->incr($key));
        $this->assertEquals(FALSE, $this->redis->incrBy($key, 1));
        $this->assertEquals(FALSE, $this->redis->decr($key));
        $this->assertEquals(FALSE, $this->redis->decrBy($key, 1));

        // lists I/F
        $this->assertEquals(FALSE, $this->redis->rPush($key, 'lvalue'));
        $this->assertEquals(FALSE, $this->redis->lPush($key, 'lvalue'));
        $this->assertEquals(FALSE, $this->redis->lLen($key));
        $this->assertEquals(FALSE, $this->redis->lPop($key));
        $this->assertEquals(FALSE, $this->redis->lrange($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->lTrim($key, 0, 1));
        $this->assertEquals(FALSE, $this->redis->lGet($key, 0));
        $this->assertEquals(FALSE, $this->redis->lSet($key, 0, "newValue"));
        $this->assertEquals(FALSE, $this->redis->lrem($key, 'lvalue', 1));
        $this->assertEquals(FALSE, $this->redis->lPop($key));
        $this->assertEquals(FALSE, $this->redis->rPop($key));
        $this->assertEquals(FALSE, $this->redis->rPoplPush($key, $dkey  . 'lkey1'));

        // sorted sets I/F
        $this->assertEquals(FALSE, $this->redis->zAdd($key, 1, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRem($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zIncrBy($key, 1, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRank($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRevRank($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRange($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->zRevRange($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->zRangeByScore($key, 1, 2));
        $this->assertEquals(FALSE, $this->redis->zCount($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->zCard($key));
        $this->assertEquals(FALSE, $this->redis->zScore($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRemRangeByRank($key, 1, 2));
        $this->assertEquals(FALSE, $this->redis->zRemRangeByScore($key, 1, 2));

        // hash I/F
        $this->assertEquals(FALSE, $this->redis->hSet($key, 'key1', 'value1'));
        $this->assertEquals(FALSE, $this->redis->hGet($key, 'key1'));
        $this->assertEquals(FALSE, $this->redis->hMGet($key, array('key1')));
        $this->assertEquals(FALSE, $this->redis->hMSet($key, array('key1' => 'value1')));
        $this->assertEquals(FALSE, $this->redis->hIncrBy($key, 'key2', 1));
        $this->assertEquals(FALSE, $this->redis->hExists($key, 'key2'));
        $this->assertEquals(FALSE, $this->redis->hDel($key, 'key2'));
        $this->assertEquals(FALSE, $this->redis->hLen($key));
        $this->assertEquals(FALSE, $this->redis->hKeys($key));
        $this->assertEquals(FALSE, $this->redis->hVals($key));
        $this->assertEquals(FALSE, $this->redis->hGetAll($key));
    }

    public function testDifferentTypeSortedSet() {
        $key = '{hash}sortedset';
        $dkey = '{hash}' . __FUNCTION__;

        $this->redis->del($key);
        $this->assertEquals(1, $this->redis->zAdd($key, 0, 'value'));

        // string I/F
        $this->assertEquals(FALSE, $this->redis->get($key));
        $this->assertEquals(FALSE, $this->redis->getset($key, 'value2'));
        $this->assertEquals(FALSE, $this->redis->append($key, 'append'));
        $this->assertEquals(FALSE, $this->redis->getRange($key, 0, 8));
        $this->assertEquals(array(FALSE), $this->redis->mget(array($key)));
        $this->assertEquals(FALSE, $this->redis->incr($key));
        $this->assertEquals(FALSE, $this->redis->incrBy($key, 1));
        $this->assertEquals(FALSE, $this->redis->decr($key));
        $this->assertEquals(FALSE, $this->redis->decrBy($key, 1));

        // lists I/F
        $this->assertEquals(FALSE, $this->redis->rPush($key, 'lvalue'));
        $this->assertEquals(FALSE, $this->redis->lPush($key, 'lvalue'));
        $this->assertEquals(FALSE, $this->redis->lLen($key));
        $this->assertEquals(FALSE, $this->redis->lPop($key));
        $this->assertEquals(FALSE, $this->redis->lrange($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->lTrim($key, 0, 1));
        $this->assertEquals(FALSE, $this->redis->lGet($key, 0));
        $this->assertEquals(FALSE, $this->redis->lSet($key, 0, "newValue"));
        $this->assertEquals(FALSE, $this->redis->lrem($key, 'lvalue', 1));
        $this->assertEquals(FALSE, $this->redis->lPop($key));
        $this->assertEquals(FALSE, $this->redis->rPop($key));
        $this->assertEquals(FALSE, $this->redis->rPoplPush($key, $dkey . 'lkey1'));

        // sets I/F
        $this->assertEquals(FALSE, $this->redis->sAdd($key, 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->srem($key, 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->sPop($key));
        $this->assertEquals(FALSE, $this->redis->sMove($key, $dkey . 'skey1', 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->scard($key));
        $this->assertEquals(FALSE, $this->redis->sismember($key, 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->sInter($key, $dkey . 'skey2'));
        $this->assertEquals(FALSE, $this->redis->sUnion($key, $dkey . 'skey4'));
        $this->assertEquals(FALSE, $this->redis->sDiff($key, $dkey . 'skey7'));
        $this->assertEquals(FALSE, $this->redis->sMembers($key));
        $this->assertEquals(FALSE, $this->redis->sRandMember($key));

        // hash I/F
        $this->assertEquals(FALSE, $this->redis->hSet($key, 'key1', 'value1'));
        $this->assertEquals(FALSE, $this->redis->hGet($key, 'key1'));
        $this->assertEquals(FALSE, $this->redis->hMGet($key, array('key1')));
        $this->assertEquals(FALSE, $this->redis->hMSet($key, array('key1' => 'value1')));
        $this->assertEquals(FALSE, $this->redis->hIncrBy($key, 'key2', 1));
        $this->assertEquals(FALSE, $this->redis->hExists($key, 'key2'));
        $this->assertEquals(FALSE, $this->redis->hDel($key, 'key2'));
        $this->assertEquals(FALSE, $this->redis->hLen($key));
        $this->assertEquals(FALSE, $this->redis->hKeys($key));
        $this->assertEquals(FALSE, $this->redis->hVals($key));
        $this->assertEquals(FALSE, $this->redis->hGetAll($key));
    }

    public function testDifferentTypeHash() {
        $key = '{hash}hash';
        $dkey = '{hash}hash';

        $this->redis->del($key);
        $this->assertEquals(1, $this->redis->hSet($key, 'key', 'value'));

        // string I/F
        $this->assertEquals(FALSE, $this->redis->get($key));
        $this->assertEquals(FALSE, $this->redis->getset($key, 'value2'));
        $this->assertEquals(FALSE, $this->redis->append($key, 'append'));
        $this->assertEquals(FALSE, $this->redis->getRange($key, 0, 8));
        $this->assertEquals(array(FALSE), $this->redis->mget(array($key)));
        $this->assertEquals(FALSE, $this->redis->incr($key));
        $this->assertEquals(FALSE, $this->redis->incrBy($key, 1));
        $this->assertEquals(FALSE, $this->redis->decr($key));
        $this->assertEquals(FALSE, $this->redis->decrBy($key, 1));

        // lists I/F
        $this->assertEquals(FALSE, $this->redis->rPush($key, 'lvalue'));
        $this->assertEquals(FALSE, $this->redis->lPush($key, 'lvalue'));
        $this->assertEquals(FALSE, $this->redis->lLen($key));
        $this->assertEquals(FALSE, $this->redis->lPop($key));
        $this->assertEquals(FALSE, $this->redis->lrange($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->lTrim($key, 0, 1));
        $this->assertEquals(FALSE, $this->redis->lGet($key, 0));
        $this->assertEquals(FALSE, $this->redis->lSet($key, 0, "newValue"));
        $this->assertEquals(FALSE, $this->redis->lrem($key, 'lvalue', 1));
        $this->assertEquals(FALSE, $this->redis->lPop($key));
        $this->assertEquals(FALSE, $this->redis->rPop($key));
        $this->assertEquals(FALSE, $this->redis->rPoplPush($key, $dkey . 'lkey1'));

        // sets I/F
        $this->assertEquals(FALSE, $this->redis->sAdd($key, 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->srem($key, 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->sPop($key));
        $this->assertEquals(FALSE, $this->redis->sMove($key, $dkey . 'skey1', 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->scard($key));
        $this->assertEquals(FALSE, $this->redis->sismember($key, 'sValue1'));
        $this->assertEquals(FALSE, $this->redis->sInter($key, $dkey . 'skey2'));
        $this->assertEquals(FALSE, $this->redis->sUnion($key, $dkey . 'skey4'));
        $this->assertEquals(FALSE, $this->redis->sDiff($key, $dkey . 'skey7'));
        $this->assertEquals(FALSE, $this->redis->sMembers($key));
        $this->assertEquals(FALSE, $this->redis->sRandMember($key));

        // sorted sets I/F
        $this->assertEquals(FALSE, $this->redis->zAdd($key, 1, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRem($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zIncrBy($key, 1, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRank($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRevRank($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRange($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->zRevRange($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->zRangeByScore($key, 1, 2));
        $this->assertEquals(FALSE, $this->redis->zCount($key, 0, -1));
        $this->assertEquals(FALSE, $this->redis->zCard($key));
        $this->assertEquals(FALSE, $this->redis->zScore($key, 'zValue1'));
        $this->assertEquals(FALSE, $this->redis->zRemRangeByRank($key, 1, 2));
        $this->assertEquals(FALSE, $this->redis->zRemRangeByScore($key, 1, 2));
    }

    public function testSerializerPHP() {
        $this->checkSerializer(Redis::SERIALIZER_PHP);

        // with prefix
        $this->redis->setOption(Redis::OPT_PREFIX, "test:");
        $this->checkSerializer(Redis::SERIALIZER_PHP);
        $this->redis->setOption(Redis::OPT_PREFIX, "");
    }

    public function testSerializerIGBinary() {
        if(defined('Redis::SERIALIZER_IGBINARY')) {
            $this->checkSerializer(Redis::SERIALIZER_IGBINARY);

            // with prefix
            $this->redis->setOption(Redis::OPT_PREFIX, "test:");
            $this->checkSerializer(Redis::SERIALIZER_IGBINARY);
            $this->redis->setOption(Redis::OPT_PREFIX, "");
        }
    }

    private function checkSerializer($mode) {

        $this->redis->del('key');
        $this->assertTrue($this->redis->getOption(Redis::OPT_SERIALIZER) === Redis::SERIALIZER_NONE);   // default

        $this->assertTrue($this->redis->setOption(Redis::OPT_SERIALIZER, $mode) === TRUE);  // set ok
        $this->assertTrue($this->redis->getOption(Redis::OPT_SERIALIZER) === $mode);    // get ok

        // lPush, rPush
        $a = array('hello world', 42, TRUE, array('<tag>' => 1729));
        $this->redis->del('key');
        $this->redis->lPush('key', $a[0]);
        $this->redis->rPush('key', $a[1]);
        $this->redis->rPush('key', $a[2]);
        $this->redis->rPush('key', $a[3]);

        // lrange
        $this->assertTrue($a === $this->redis->lrange('key', 0, -1));

        // lGet
        $this->assertTrue($a[0] === $this->redis->lGet('key', 0));
        $this->assertTrue($a[1] === $this->redis->lGet('key', 1));
        $this->assertTrue($a[2] === $this->redis->lGet('key', 2));
        $this->assertTrue($a[3] === $this->redis->lGet('key', 3));

        // lrem
        $this->assertTrue($this->redis->lrem('key', $a[3]) === 1);
        $this->assertTrue(array_slice($a, 0, 3) === $this->redis->lrange('key', 0, -1));

        // lSet
        $a[0] = array('k' => 'v'); // update
        $this->assertTrue(TRUE === $this->redis->lSet('key', 0, $a[0]));
        $this->assertTrue($a[0] === $this->redis->lGet('key', 0));

        // lInsert
        $this->assertTrue($this->redis->lInsert('key', Redis::BEFORE, $a[0], array(1,2,3)) === 4);
        $this->assertTrue($this->redis->lInsert('key', Redis::AFTER, $a[0], array(4,5,6)) === 5);

        $a = array(array(1,2,3), $a[0], array(4,5,6), $a[1], $a[2]);
        $this->assertTrue($a === $this->redis->lrange('key', 0, -1));

        // sAdd
        $this->redis->del('{set}key');
        $s = array(1,'a', array(1,2,3), array('k' => 'v'));

        $this->assertTrue(1 === $this->redis->sAdd('{set}key', $s[0]));
        $this->assertTrue(1 === $this->redis->sAdd('{set}key', $s[1]));
        $this->assertTrue(1 === $this->redis->sAdd('{set}key', $s[2]));
        $this->assertTrue(1 === $this->redis->sAdd('{set}key', $s[3]));

        // variadic sAdd
        $this->redis->del('k');
        $this->assertTrue(3 === $this->redis->sAdd('k', 'a', 'b', 'c'));
        $this->assertTrue(1 === $this->redis->sAdd('k', 'a', 'b', 'c', 'd'));

        // srem
        $this->assertTrue(1 === $this->redis->srem('{set}key', $s[3]));
        $this->assertTrue(0 === $this->redis->srem('{set}key', $s[3]));

        // variadic
        $this->redis->del('k');
        $this->redis->sAdd('k', 'a', 'b', 'c', 'd');
        $this->assertTrue(2 === $this->redis->sRem('k', 'a', 'd'));
        $this->assertTrue(2 === $this->redis->sRem('k', 'b', 'c', 'e'));
        $this->assertTrue(FALSE === $this->redis->exists('k'));

        // sismember
        $this->assertTrue(TRUE === $this->redis->sismember('{set}key', $s[0]));
        $this->assertTrue(TRUE === $this->redis->sismember('{set}key', $s[1]));
        $this->assertTrue(TRUE === $this->redis->sismember('{set}key', $s[2]));
        $this->assertTrue(FALSE === $this->redis->sismember('{set}key', $s[3]));
        unset($s[3]);

        // sMove
        $this->redis->del('{set}tmp');
        $this->redis->sMove('{set}key', '{set}tmp', $s[0]);
        $this->assertTrue(FALSE === $this->redis->sismember('{set}key', $s[0]));
        $this->assertTrue(TRUE === $this->redis->sismember('{set}tmp', $s[0]));
        unset($s[0]);

        // sorted sets
        $z = array('z0', array('k' => 'v'), FALSE, NULL);
        $this->redis->del('key');

        // zAdd
        $this->assertTrue(1 === $this->redis->zAdd('key', 0, $z[0]));
        $this->assertTrue(1 === $this->redis->zAdd('key', 1, $z[1]));
        $this->assertTrue(1 === $this->redis->zAdd('key', 2, $z[2]));
        $this->assertTrue(1 === $this->redis->zAdd('key', 3, $z[3]));

        // zRem
        $this->assertTrue(1 === $this->redis->zRem('key', $z[3]));
        $this->assertTrue(0 === $this->redis->zRem('key', $z[3]));
        unset($z[3]);

        // check that zRem doesn't crash with a missing parameter (GitHub issue #102):
        $this->assertTrue(FALSE === @$this->redis->zRem('key'));

        // variadic
        $this->redis->del('k');
        $this->redis->zAdd('k', 0, 'a');
        $this->redis->zAdd('k', 1, 'b');
        $this->redis->zAdd('k', 2, 'c');
        $this->assertTrue(2 === $this->redis->zRem('k', 'a', 'c'));
        $this->assertTrue(1.0 === $this->redis->zScore('k', 'b'));
        $this->assertTrue($this->redis->zRange('k', 0, -1, true) == array('b' => 1.0));

        // zRange
        $this->assertTrue($z === $this->redis->zRange('key', 0, -1));

        // zScore
        $this->assertTrue(0.0 === $this->redis->zScore('key', $z[0]));
        $this->assertTrue(1.0 === $this->redis->zScore('key', $z[1]));
        $this->assertTrue(2.0 === $this->redis->zScore('key', $z[2]));

        // zRank
        $this->assertTrue(0 === $this->redis->zRank('key', $z[0]));
        $this->assertTrue(1 === $this->redis->zRank('key', $z[1]));
        $this->assertTrue(2 === $this->redis->zRank('key', $z[2]));

        // zRevRank
        $this->assertTrue(2 === $this->redis->zRevRank('key', $z[0]));
        $this->assertTrue(1 === $this->redis->zRevRank('key', $z[1]));
        $this->assertTrue(0 === $this->redis->zRevRank('key', $z[2]));

        // zIncrBy
        $this->assertTrue(3.0 === $this->redis->zIncrBy('key', 1.0, $z[2]));
        $this->assertTrue(3.0 === $this->redis->zScore('key', $z[2]));

        $this->assertTrue(5.0 === $this->redis->zIncrBy('key', 2.0, $z[2]));
        $this->assertTrue(5.0 === $this->redis->zScore('key', $z[2]));

        $this->assertTrue(2.0 === $this->redis->zIncrBy('key', -3.0, $z[2]));
        $this->assertTrue(2.0 === $this->redis->zScore('key', $z[2]));

        // mset
        $a = array('k0' => 1, 'k1' => 42, 'k2' => NULL, 'k3' => FALSE, 'k4' => array('a' => 'b'));
        $this->assertTrue(TRUE === $this->redis->mset($a));
        foreach($a as $k => $v) {
            $this->assertTrue($this->redis->get($k) === $v);
        }

        $a = array('k0' => 1, 'k1' => 42, 'k2' => NULL, 'k3' => FALSE, 'k4' => array('a' => 'b'));

        // hSet
        $this->redis->del('key');
        foreach($a as $k => $v) {
            $this->assertTrue(1 === $this->redis->hSet('key', $k, $v));
        }

        // hGet
        foreach($a as $k => $v) {
            $this->assertTrue($v === $this->redis->hGet('key', $k));
        }

        // hGetAll
        $this->assertTrue($a === $this->redis->hGetAll('key'));
        $this->assertTrue(TRUE === $this->redis->hExists('key', 'k0'));
        $this->assertTrue(TRUE === $this->redis->hExists('key', 'k1'));
        $this->assertTrue(TRUE === $this->redis->hExists('key', 'k2'));
        $this->assertTrue(TRUE === $this->redis->hExists('key', 'k3'));
        $this->assertTrue(TRUE === $this->redis->hExists('key', 'k4'));

        // hMSet
        $this->redis->del('key');
        $this->redis->hMSet('key', $a);
        foreach($a as $k => $v) {
            $this->assertTrue($v === $this->redis->hGet('key', $k));
        }

        // hMget
        $hmget = $this->redis->hMget('key', array_keys($a));
        foreach($hmget as $k => $v) {
            $this->assertTrue($v === $a[$k]);
        }

        // getMultiple
        $this->redis->set('a', NULL);
        $this->redis->set('b', FALSE);
        $this->redis->set('c', 42);
        $this->redis->set('d', array('x' => 'y'));

        $this->assertTrue(array(NULL, FALSE, 42, array('x' => 'y')) === $this->redis->mGet(array('a', 'b', 'c', 'd')));

        // pipeline
        if ($this->havePipeline()) {
            $this->sequence(Redis::PIPELINE);
        }

        // multi-exec
        $this->sequence(Redis::MULTI);

        // keys
        $this->assertTrue(is_array($this->redis->keys('*')));

        // issue #62, hgetall
        $this->redis->del('hash1');
        $this->redis->hSet('hash1','data', 'test 1');
        $this->redis->hSet('hash1','session_id', 'test 2');

        $data = $this->redis->hGetAll('hash1');
        $this->assertTrue($data['data'] === 'test 1');
        $this->assertTrue($data['session_id'] === 'test 2');

        // issue #145, serializer with objects.
        $this->redis->set('x', array(new stdClass, new stdClass));
        $x = $this->redis->get('x');
        $this->assertTrue(is_array($x));
        $this->assertTrue(is_object($x[0]) && get_class($x[0]) === 'stdClass');
        $this->assertTrue(is_object($x[1]) && get_class($x[1]) === 'stdClass');

        // revert
        $this->assertTrue($this->redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_NONE) === TRUE);     // set ok
        $this->assertTrue($this->redis->getOption(Redis::OPT_SERIALIZER) === Redis::SERIALIZER_NONE);       // get ok
    }

    public function testDumpRestore() {

        if (version_compare($this->version, "2.5.0", "lt")) {
            $this->markTestSkipped();
        }

        $this->redis->del('foo');
        $this->redis->del('bar');

        $this->redis->set('foo', 'this-is-foo');
        $this->redis->set('bar', 'this-is-bar');

        $d_foo = $this->redis->dump('foo');
        $d_bar = $this->redis->dump('bar');

        $this->redis->del('foo');
        $this->redis->del('bar');

        // Assert returns from restore
        $this->assertTrue($this->redis->restore('foo', 0, $d_bar));
        $this->assertTrue($this->redis->restore('bar', 0, $d_foo));

        // Now check that the keys have switched
        $this->assertTrue($this->redis->get('foo') === 'this-is-bar');
        $this->assertTrue($this->redis->get('bar') === 'this-is-foo');

        $this->redis->del('foo');
        $this->redis->del('bar');
    }

    public function testGetLastError() {
        // We shouldn't have any errors now
        $this->assertTrue($this->redis->getLastError() === NULL);

        // test getLastError with a regular command
        $this->redis->set('x', 'a');
        $this->assertFalse($this->redis->incr('x'));
        $incrError = $this->redis->getLastError();
        $this->assertTrue(strlen($incrError) > 0);

        // clear error
        $this->redis->clearLastError();
        $this->assertTrue($this->redis->getLastError() === NULL);
    }

    // Helper function to compare nested results -- from the php.net array_diff page, I believe
    private function array_diff_recursive($aArray1, $aArray2) {
        $aReturn = array();

        foreach ($aArray1 as $mKey => $mValue) {
            if (array_key_exists($mKey, $aArray2)) {
                if (is_array($mValue)) {
                    $aRecursiveDiff = $this->array_diff_recursive($mValue, $aArray2[$mKey]);
                    if (count($aRecursiveDiff)) {
                        $aReturn[$mKey] = $aRecursiveDiff;
                    }
                } else {
                    if ($mValue != $aArray2[$mKey]) {
                        $aReturn[$mKey] = $mValue;
                    }
                }
            } else {
                $aReturn[$mKey] = $mValue;
            }
        }

        return $aReturn;
    }

    public function testScript() {

        if (version_compare($this->version, "2.5.0", "lt")) {
            $this->markTestSkipped();
        }

        // Flush any scripts we have
        $this->assertTrue($this->redis->script('flush'));

        // Silly scripts to test against
        $s1_src = 'return 1';
        $s1_sha = sha1($s1_src);
        $s2_src = 'return 2';
        $s2_sha = sha1($s2_src);
        $s3_src = 'return 3';
        $s3_sha = sha1($s3_src);

        // None should exist
        $result = $this->redis->script('exists', $s1_sha, $s2_sha, $s3_sha);
        $this->assertTrue(is_array($result) && count($result) == 3);
        $this->assertTrue(is_array($result) && count(array_filter($result)) == 0);

        // Load them up
        $this->assertTrue($this->redis->script('load', $s1_src) == $s1_sha);
        $this->assertTrue($this->redis->script('load', $s2_src) == $s2_sha);
        $this->assertTrue($this->redis->script('load', $s3_src) == $s3_sha);

        // They should all exist
        $result = $this->redis->script('exists', $s1_sha, $s2_sha, $s3_sha);
        $this->assertTrue(is_array($result) && count(array_filter($result)) == 3);
    }

    public function testEval() {

        if (version_compare($this->version, "2.5.0", "lt")) {
            $this->markTestSkipped();
        }

        // Basic single line response tests
        $this->assertTrue(1 == $this->redis->eval('return 1'));
        $this->assertTrue(1.55 == $this->redis->eval("return '1.55'"));
        $this->assertTrue("hello, world" == $this->redis->eval("return 'hello, world'"));

        /*
         * Keys to be incorporated into lua results
         */
        // Make a list
        $this->redis->del('{eval-key}-list');
        $this->redis->rpush('{eval-key}-list', 'a');
        $this->redis->rpush('{eval-key}-list', 'b');
        $this->redis->rpush('{eval-key}-list', 'c');

        // Make a set
        $this->redis->del('{eval-key}-set');
        $this->redis->sadd('{eval-key}-set', 'd');
        $this->redis->sadd('{eval-key}-set', 'e');
        $this->redis->sadd('{eval-key}-set', 'f');

        // Basic keys
        $this->redis->set('{eval-key}-str1', 'hello, world');
        $this->redis->set('{eval-key}-str2', 'hello again!');

        // Use a script to return our list, and verify its response
        $list = $this->redis->eval("return redis.call('lrange', KEYS[1], 0, -1)", Array('{eval-key}-list'), 1);
        $this->assertTrue($list === Array('a','b','c'));

        // Use a script to return our set
        $set = $this->redis->eval("return redis.call('smembers', KEYS[1])", Array('{eval-key}-set'), 1);
        $this->assertTrue($set == Array('d','e','f'));

        // Test an empty MULTI BULK response
        $this->redis->del('{eval-key}-nolist');
        $empty_resp = $this->redis->eval("return redis.call('lrange', '{eval-key}-nolist', 0, -1)",
            Array('{eval-key}-nolist'), 1);
        $this->assertTrue(is_array($empty_resp) && empty($empty_resp));

        // Now test a nested reply
        $nested_script = "
            return {
                1,2,3, {
                    redis.call('get', '{eval-key}-str1'),
                    redis.call('get', '{eval-key}-str2'),
                    redis.call('lrange', 'not-any-kind-of-list', 0, -1),
                    {
                        redis.call('smembers','{eval-key}-set'),
                        redis.call('lrange', '{eval-key}-list', 0, -1)
                    }
                }
            }
        ";

        $expected = Array(
            1, 2, 3, Array(
                'hello, world',
                'hello again!',
                Array(),
                Array(
                    Array('d','e','f'),
                    Array('a','b','c')
                )
            )
        );

        // Now run our script, and check our values against each other
        $eval_result = $this->redis->eval($nested_script, Array('{eval-key}-str1', '{eval-key}-str2', '{eval-key}-set', '{eval-key}-list'), 4);
        $this->assertTrue(is_array($eval_result) && count($this->array_diff_recursive($eval_result, $expected)) == 0);

        /*
         * Nested reply wihin a multi/pipeline block
         */

        $num_scripts = 10;

        $arr_modes = Array(Redis::MULTI);
        if ($this->havePipeline()) $arr_modes[] = Redis::PIPELINE;

        foreach($arr_modes as $mode) {
            $this->redis->multi($mode);
            for($i=0;$i<$num_scripts;$i++) {
                $this->redis->eval($nested_script, Array('{eval-key}-dummy'), 1);
            }
            $replies = $this->redis->exec();

            foreach($replies as $reply) {
                $this->assertTrue(is_array($reply) && count($this->array_diff_recursive($reply, $expected)) == 0);
            }
        }

        /*
         * KEYS/ARGV
         */

        $args_script = "return {KEYS[1],KEYS[2],KEYS[3],ARGV[1],ARGV[2],ARGV[3]}";
        $args_args   = Array('{k}1','{k}2','{k}3','v1','v2','v3');
        $args_result = $this->redis->eval($args_script, $args_args, 3);
        $this->assertTrue($args_result === $args_args);

        // turn on key prefixing
        $this->redis->setOption(Redis::OPT_PREFIX, 'prefix:');
        $args_result = $this->redis->eval($args_script, $args_args, 3);

        // Make sure our first three are prefixed
        for($i=0;$i<count($args_result);$i++) {
            if($i<3) {
                // Should be prefixed
                $this->assertTrue($args_result[$i] == 'prefix:' . $args_args[$i]);
            } else {
                // Should not be prefixed
                $this->assertTrue($args_result[$i] == $args_args[$i]);
            }
        }
    }

    public function testEvalSHA() {
        if (version_compare($this->version, "2.5.0", "lt")) {
            $this->markTestSkipped();
        }

        // Flush any loaded scripts
        $this->redis->script('flush');

        // Non existant script (but proper sha1), and a random (not) sha1 string
        $this->assertFalse($this->redis->evalsha(sha1(uniqid())));
        $this->assertFalse($this->redis->evalsha('some-random-data'));

        // Load a script
        $cb  = uniqid(); // To ensure the script is new
        $scr = "local cb='$cb' return 1";
        $sha = sha1($scr);

        // Run it when it doesn't exist, run it with eval, and then run it with sha1
        $this->assertTrue(false === $this->redis->evalsha($scr));
        $this->assertTrue(1 === $this->redis->eval($scr));
        $this->assertTrue(1 === $this->redis->evalsha($sha));
    }

    public function testSerialize() {
        $vals = Array(1, 1.5, 'one', Array('here','is','an','array'));

        // Test with no serialization at all
        $this->assertTrue($this->redis->_serialize('test') === 'test');
        $this->assertTrue($this->redis->_serialize(1) === '1');
        $this->assertTrue($this->redis->_serialize(Array()) === 'Array');
        $this->assertTrue($this->redis->_serialize(new stdClass) === 'Object');

        $arr_serializers = Array(Redis::SERIALIZER_PHP);
        if(defined('Redis::SERIALIZER_IGBINARY')) {
            $arr_serializers[] = Redis::SERIALIZER_IGBINARY;
        }

        foreach($arr_serializers as $mode) {
            $arr_enc = Array();
            $arr_dec = Array();

            foreach($vals as $k => $v) {
                $enc = $this->redis->_serialize($v);
                $dec = $this->redis->_unserialize($enc);

                // They should be the same
                $this->assertTrue($enc == $dec);
            }
        }
    }

    public function testUnserialize() {
        $vals = Array(
            1,1.5,'one',Array('this','is','an','array')
        );

        $serializers = Array(Redis::SERIALIZER_PHP);
        if(defined('Redis::SERIALIZER_IGBINARY')) {
            $serializers[] = Redis::SERIALIZER_IGBINARY;
        }

        foreach($serializers as $mode) {
            $vals_enc = Array();

            // Pass them through redis so they're serialized
            foreach($vals as $key => $val) {
                $this->redis->setOption(Redis::OPT_SERIALIZER, $mode);

                $key = "key" . ++$key;
                $this->redis->del($key);
                $this->redis->set($key, $val);

                // Clear serializer, get serialized value
                $this->redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_NONE);
                $vals_enc[] = $this->redis->get($key);
            }

            // Run through our array comparing values
            for($i=0;$i<count($vals);$i++) {
                // reset serializer
                $this->redis->setOption(Redis::OPT_SERIALIZER, $mode);
                $this->assertTrue($vals[$i] == $this->redis->_unserialize($vals_enc[$i]));
                $this->redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_NONE);
            }
        }
    }

    public function testPrefix() {
        // no prefix
        $this->redis->setOption(Redis::OPT_PREFIX, '');
        $this->assertTrue('key' == $this->redis->_prefix('key'));

        // with a prefix
        $this->redis->setOption(Redis::OPT_PREFIX, 'some-prefix:');
        $this->assertTrue('some-prefix:key' == $this->redis->_prefix('key'));

        // Clear prefix
        $this->redis->setOption(Redis::OPT_PREFIX, '');

    }

    public function testReconnectSelect() {
        $key = 'reconnect-select';
        $value = 'Has been set!';

        $original_cfg = $this->redis->config('GET', 'timeout');

        // Make sure the default DB doesn't have the key.
        $this->redis->select(0);
        $this->redis->del($key);

        // Set the key on a different DB.
        $this->redis->select(5);
        $this->redis->set($key, $value);

        // Time out after 1 second.
        $this->redis->config('SET', 'timeout', '1');

        // Wait for the timeout. With Redis 2.4, we have to wait up to 10 s
        // for the server to close the connection, regardless of the timeout
        // setting.
        sleep(11);

        // Make sure we're still using the same DB.
        $this->assertEquals($value, $this->redis->get($key));

        // Revert the setting.
        $this->redis->config('SET', 'timeout', $original_cfg['timeout']);
    }

    public function testTime() {

        if (version_compare($this->version, "2.5.0", "lt")) {
            $this->markTestSkipped();
        }

        $time_arr = $this->redis->time();
        $this->assertTrue(is_array($time_arr) && count($time_arr) == 2 &&
                          strval(intval($time_arr[0])) === strval($time_arr[0]) &&
                          strval(intval($time_arr[1])) === strval($time_arr[1]));
    }

    public function testReadTimeoutOption() {

        $this->assertTrue(defined('Redis::OPT_READ_TIMEOUT'));

        $this->redis->setOption(Redis::OPT_READ_TIMEOUT, "12.3");
        $this->assertEquals(12.3, $this->redis->getOption(Redis::OPT_READ_TIMEOUT));
    }

    public function testIntrospection() {
        // Simple introspection tests
        $this->assertTrue($this->redis->getHost() === self::HOST);
        $this->assertTrue($this->redis->getPort() === self::PORT);
        $this->assertTrue($this->redis->getAuth() === self::AUTH);
    }

    /**
     * Scan and variants
     */

    protected function get_keyspace_count($str_db) {
        $arr_info = $this->redis->info();
        $arr_info = $arr_info[$str_db];
        $arr_info = explode(',', $arr_info);
        $arr_info = explode('=', $arr_info[0]);
        return $arr_info[1];
    }

    public function testScan() {
        if(version_compare($this->version, "2.8.0", "lt")) {
            $this->markTestSkipped();
            return;
        }

        // Key count
        $i_key_count = $this->get_keyspace_count('db0');

        // Have scan retry
        $this->redis->setOption(Redis::OPT_SCAN, Redis::SCAN_RETRY);

        // Scan them all
        $it = NULL;
        while($arr_keys = $this->redis->scan($it)) {
            $i_key_count -= count($arr_keys);
        }
        // Should have iterated all keys
        $this->assertEquals(0, $i_key_count);

        // Unique keys, for pattern matching
        $str_uniq = uniqid() . '-' . uniqid();
        for($i=0;$i<10;$i++) {
            $this->redis->set($str_uniq . "::$i", "bar::$i");
        }

        // Scan just these keys using a pattern match
        $it = NULL;
        while($arr_keys = $this->redis->scan($it, "*$str_uniq*")) {
            $i -= count($arr_keys);
        }
        $this->assertEquals(0, $i);
    }

    public function testHScan() {
        if(version_compare($this->version, "2.8.0", "lt")) {
            $this->markTestSkipped();
            return;
        }

        // Never get empty sets
        $this->redis->setOption(Redis::OPT_SCAN, Redis::SCAN_RETRY);

        $this->redis->del('hash');
        $i_foo_mems = 0;

        for($i=0;$i<100;$i++) {
            if($i>3) {
                $this->redis->hset('hash', "member:$i", "value:$i");
            } else {
                $this->redis->hset('hash', "foomember:$i", "value:$i");
                $i_foo_mems++;
            }
        }

        // Scan all of them
        $it = NULL;
        while($arr_keys = $this->redis->hscan('hash', $it)) {
            $i -= count($arr_keys);
        }
        $this->assertEquals(0, $i);

        // Scan just *foomem* (should be 4)
        $it = NULL;
        while($arr_keys = $this->redis->hscan('hash', $it, '*foomember*')) {
            $i_foo_mems -= count($arr_keys);
            foreach($arr_keys as $str_mem => $str_val) {
                $this->assertTrue(strpos($str_mem, 'member')!==FALSE);
                $this->assertTrue(strpos($str_val, 'value')!==FALSE);
            }
        }
        $this->assertEquals(0, $i_foo_mems);
    }

    public function testSScan() {
        if(version_compare($this->version, "2.8.0", "lt")) {
            $this->markTestSkipped();
            return;
        }

        $this->redis->setOption(Redis::OPT_SCAN, Redis::SCAN_RETRY);

        $this->redis->del('set');
        for($i=0;$i<100;$i++) {
            $this->redis->sadd('set', "member:$i");
        }

        // Scan all of them
        $it = NULL;
        while($arr_keys = $this->redis->sscan('set', $it)) {
            $i -= count($arr_keys);
            foreach($arr_keys as $str_mem) {
                $this->assertTrue(strpos($str_mem,'member')!==FALSE);
            }
        }
        $this->assertEquals(0, $i);

        // Scan just ones with zero in them (0, 10, 20, 30, 40, 50, 60, 70, 80, 90)
        $it = NULL;
        $i_w_zero = 0;
        while($arr_keys = $this->redis->sscan('set', $it, '*0*')) {
            $i_w_zero += count($arr_keys);
        }
        $this->assertEquals(10, $i_w_zero);
    }

    public function testZScan() {
        if(version_compare($this->version, "2.8.0", "lt")) {
            $this->markTestSkipped();
            return;
        }

        $this->redis->setOption(Redis::OPT_SCAN, Redis::SCAN_RETRY);

        $this->redis->del('zset');
        $i_tot_score = 0;
        $i_p_score = 0;
        $i_p_count = 0;
        for($i=0;$i<2000;$i++) {
            if($i<10) {
                $this->redis->zadd('zset', $i, "pmem:$i");
                $i_p_score += $i;
                $i_p_count += 1;
            } else {
                $this->redis->zadd('zset', $i, "mem:$i");
            }

            $i_tot_score += $i;
        }

        // Scan them all
        $it = NULL;
        while($arr_keys = $this->redis->zscan('zset', $it)) {
            foreach($arr_keys as $str_mem => $f_score) {
                $i_tot_score -= $f_score;
                $i--;
            }
        }

        $this->assertEquals(0, $i);
        $this->assertEquals((float)0, $i_tot_score);

        // Just scan "pmem" members
        $it = NULL;
        $i_p_score_old = $i_p_score;
        $i_p_count_old = $i_p_count;
        while($arr_keys = $this->redis->zscan('zset', $it, "*pmem*")) {
            foreach($arr_keys as $str_mem => $f_score) {
                $i_p_score -= $f_score;
                $i_p_count -= 1;
            }
        }
        $this->assertEquals((float)0, $i_p_score);
        $this->assertEquals(0, $i_p_count);

        // Turn off retrying and we should get some empty results
        $this->redis->setOption(Redis::OPT_SCAN, Redis::SCAN_NORETRY);
        $i_skips = 0;
        $i_p_score = $i_p_score_old;
        $i_p_count = $i_p_count_old;
        $it = NULL;
        while(($arr_keys = $this->redis->zscan('zset', $it, "*pmem*")) !== FALSE) {
            if(count($arr_keys) == 0) $i_skips++;
            foreach($arr_keys as $str_mem => $f_score) {
                $i_p_score -= $f_score;
                $i_p_count -= 1;
            }
        }
        // We should still get all the keys, just with several empty results
        $this->assertTrue($i_skips > 0);
        $this->assertEquals((float)0, $i_p_score);
        $this->assertEquals(0, $i_p_count);
    }

    //
    // HyperLogLog (PF) commands
    //

    protected function createPFKey($str_key, $i_count) {
        $arr_mems = Array();
        for($i=0;$i<$i_count;$i++) {
            $arr_mems[] = uniqid() . '-' . $i;
        }

        // Estimation by Redis
        $this->redis->pfadd($str_key, $i_count);
    }

    public function testPFCommands() {
        // Isn't available until 2.8.9
        if(version_compare($this->version, "2.8.9", "lt")) {
            $this->markTestSkipped();
            return;
        }

        $str_uniq = uniqid();
        $arr_mems = Array();

        for($i=0;$i<1000;$i++) {
            if($i%2 == 0) {
                $arr_mems[] = $str_uniq . '-' . $i;
            } else {
                $arr_mems[] = $i;
            }
        }

        // How many keys to create
        $i_keys = 10;

        // Iterate prefixing/serialization options
        foreach(Array(Redis::SERIALIZER_NONE, Redis::SERIALIZER_PHP) as $str_ser) {
            foreach(Array('', 'hl-key-prefix:') as $str_prefix) {
                $arr_keys = Array();

                // Now add for each key
                for($i=0;$i<$i_keys;$i++) {
                    $str_key    = "{key}:$i";
                    $arr_keys[] = $str_key;

                    // Clean up this key
                    $this->redis->del($str_key);

                    // Add to our cardinality set, and confirm we got a valid response
                    $this->assertTrue($this->redis->pfadd($str_key, $arr_mems));

                    // Grab estimated cardinality
                    $i_card = $this->redis->pfcount($str_key);
                    $this->assertTrue(is_int($i_card));

                    // Count should be close
                    $this->assertLess(abs($i_card-count($arr_mems)), count($arr_mems) * .1);

                    // The PFCOUNT on this key should be the same as the above returned response
                    $this->assertEquals($this->redis->pfcount($str_key), $i_card);
                }

                // Clean up merge key
                $this->redis->del('pf-merge-{key}');

                // Merge the counters
                $this->assertTrue($this->redis->pfmerge('pf-merge-{key}', $arr_keys));

                // Validate our merged count
                $i_redis_card = $this->redis->pfcount('pf-merge-{key}');

                // Merged cardinality should still be roughly 1000
                $this->assertLess(abs($i_redis_card-count($arr_mems)), count($arr_mems) * .1);

                // Clean up merge key
                $this->redis->del('pf-merge-{key}');
            }
        }
    }

    /* Test a 'raw' command */
    public function testRawCommand() {
        $this->redis->set('mykey','some-value');
        $str_result = $this->redis->rawCommand('get', 'mykey');
        $this->assertEquals($str_result, 'some-value');

        $this->redis->del('mylist');
        $this->redis->rpush('mylist', 'A', 'B', 'C', 'D');
        $this->assertEquals($this->redis->lrange('mylist', 0, -1), Array('A','B','C','D'));
    }
}
?>