var tests = [] , filters = [] , allNames = [] ; 
function Failure(why){ 
this.message = why; 
} 
Failure.prototype.toString = function (){ 
return this.message; 
} 
; 
function indexOf(collection, elt){ 
if (collection.indexOf) return collection.indexOf(elt); 
for (var i = 0, e = _AN_Read_length('length', collection); 
i < e; ++i)if (collection[i] == elt) return i; 
return -1; 
} 
function test(name, run, expectedFail){ 
var originalName = name; 
var i = 2; 
while (indexOf(allNames, name) !== -1){ 
name = originalName + "_" + i; 
i++ ; 
} 
allNames.push(name); 
tests.push({ 
name: name,
func: run,
expectedFail: expectedFail}
); 
return name; 
} 
var namespace = ""; 
function testCM(name, run, opts, expectedFail){ 
return test(namespace + name, function (){ 
var place = document.getElementById("testground"), cm = window.cm = CodeMirror(place, opts); 
var successful = false ; 
try { 
run(cm); 
successful = true ; 
} 
finally{ 
if (!successful || verbose) { 
place.style.visibility = "visible"; 
} 
 else { 
place.removeChild(cm.getWrapperElement()); 
} 
} 
} 
, expectedFail); 
} 
function runTests(callback){ 
var totalTime = 0; 
function step(i){ 
for (; ; ){ 
if (i === _AN_Read_length("length", tests)) { 
running = false ; 
return callback("done"); 
} 
var test = tests[i], skip = false ; 
if (filters.length) { 
skip = true ; 
for (var j = 0; 
j < _AN_Read_length("length", filters); j++ )if (test.name.match(filters[j])) skip = false ; 
} 
if (skip) { 
callback("skipped", test.name, message); 
i++ ; 
} 
 else { 
break ; 
} 
} 
var expFail = test.expectedFail, startTime = + new Date(), threw = false ; 
try { 
var message = test.func(); 
} 
catch (e) { 
threw = true ; 
if (expFail) callback("expected", test.name); 
 else if (e instanceof Failure) callback("fail", test.name, e.message); 
 else { 
var pos = /(?:\bat |@).*?([^\/:]+):(\d+)/.exec(e.stack); 
if (pos) console.log(e.stack); 
callback("error", test.name, e.toString() + (pos? " (" + pos[1] + ":" + pos[2] + ")": "")); 
} 
} 
if (!threw) { 
if (expFail) callback("fail", test.name, message || "expected failure, but passed"); 
 else callback("ok", test.name, message); 
} 
if (!quit) { 
var delay = 0; 
totalTime += (+ new Date()) - startTime; 
if (totalTime > 500) { 
totalTime = 0; 
delay = 50; 
} 
_AN_Call_settimeout("setTimeout", window, function (){ 
step(i + 1); 
} 
, delay); 
} 
 else { 
running = false ; 
return null ; 
} 
} 
step(0); 
} 
function label(str, msg){ 
if (msg) return str + " (" + msg + ")"; 
return str; 
} 
function eq(a, b, msg){ 
if (a != b) throw new Failure(label(a + " != " + b, msg))
} 
function near(a, b, margin, msg){ 
if (Math.abs(a - b) > margin) throw new Failure(label(a + " is not close to " + b + " (" + margin + ")", msg))
} 
function eqPos(a, b, msg){ 
function str(p){ 
return "{line:" + p.line + ",ch:" + p.ch + "}"; 
} 
if (a == b) return ; 
if (a == null ) throw new Failure(label("comparing null to " + str(b), msg))
if (b == null ) throw new Failure(label("comparing " + str(a) + " to null", msg))
if (a.line != b.line || a.ch != b.ch) throw new Failure(label(str(a) + " != " + str(b), msg))
} 
function is(a, msg){ 
if (!a) throw new Failure(label("assertion failed", msg))
} 
function countTests(){ 
if (!_AN_Read_length("length", filters)) return _AN_Read_length("length", tests); 
var sum = 0; 
for (var i = 0; 
i < _AN_Read_length("length", tests); ++i){ 
var name = tests[i].name; 
for (var j = 0; 
j < _AN_Read_length("length", filters); j++ ){ 
if (name.match(filters[j])) { 
++sum; 
break ; 
} 
} 
} 
return sum; 
} 
function parseTestFilter(s){ 
if (/_\*$/.test(s)) return new RegExp("^" + s.slice(0, _AN_Read_length("length", s) - 2), "i"); 
 else return new RegExp(s, "i"); 
}