add tests

Author: tj

test/cases/media.css

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+
+body
+  padding: 50px
+  ul
+    margin: 0
+    padding: 0
+    li
+      list-style: none
+      a
+        color: blue

test/cases/media.out.css

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+
+ul
+  li
+    background: #eee
+    &:hover
+      background: white
+    &:active
+      background: #ddd

test/cases/nesting.css

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+
+body
+  background: #eee
+  color: white
+
+ul li
+  list-style: none
+  margin: 0
+  padding: 0

test/cases/nesting.out.css

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+body {
+  background: #eee;
+  color: white;
+}
+
+ul li {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+}

test/cases/parent.css

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+
+var compile = require('..');
+var fs = require('fs');
+var path = require('path');
+var read = fs.readFileSync;
+var readdir = fs.readdirSync;
+
+readdir('test/cases').forEach(function(file){
+  if (~file.indexOf('.out')) return;
+  var base = path.basename(file, '.css');
+  var input = read('test/cases/' + file, 'utf8');
+  var output = read('test/cases/' + base + '.out.css', 'utf8');
+
+  describe(base, function(){
+    it('should work', function(){
+      var out = compile(input);
+      out.should.equal(output);
+    })
+  })
+});