fixes #221, initial sync*, async, async* implementation

karma.conf.js

 // Karma configuration
 // Generated on Mon Apr 20 2015 06:33:20 GMT-0700 (PDT)
 
 module.exports = function(config) {
   var harmony_flags = '--js-flags="' + [
     '--harmony',
   ].join(' ') + '"';
 
   var configuration = {
 
     // base path that will be used to resolve all patterns (eg. files, exclude)
     basePath: '',
 
     // frameworks to use
     // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
     frameworks: ['mocha', 'requirejs', 'chai'],
 
     // list of files / patterns to load in the browser
     files: [
       'lib/runtime/dart_*.js',
       'lib/runtime/_*.js',
       'lib/runtime/dart/*.js',
       // {pattern: 'test/browser/*.js', included: false}
+      'test/codegen/expect/async_helper/async_helper.js',
+      'test/codegen/expect/dom/dom.js',
+      'test/codegen/expect/expect/expect.js',
+      'test/codegen/expect/unittest/unittest.js',
+      'test/codegen/expect/syncstar_syntax.js',
+      'test/codegen/expect/language/*.js',
       'test/browser/*.js',
       'test-main.js',
     ],
 
     // list of files to exclude
     exclude: [
     ],
 
     // preprocess matching files before serving them to the browser
     // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
@@ skipping 53 matching lines @@
     singleRun: false,
   };
 
   if (process.env.TRAVIS) {
     configuration.browsers = ['chrome_canary_travis'];
     configuration.autoWatch = false;
   }
 
   config.set(configuration);
 };