fix #626, add AMD module format and make it default

test-main.js

 var allTestFiles = [];
-var TEST_REGEXP = /(spec|test)\.js$/i;
+var TEST_REGEXP = /(_test|_multi)\.js$/i;
 
 var pathToModule = function(path) {
   return path.replace(/^\/base\//, '').replace(/\.js$/, '');
 };
 
+var testsToSkip = [
+  // syntax error:
+  '/base/gen/codegen_output/language/execute_finally6_test.js',
+  '/base/gen/codegen_output/language/switch_label2_test.js',
+  '/base/gen/codegen_output/language/infinite_switch_label_test.js',
+  '/base/gen/codegen_output/language/switch_label_test.js',
+  '/base/gen/codegen_output/language/nested_switch_label_test.js',
+  '/base/gen/codegen_output/language/switch_try_catch_test.js',
+
+  // module code execution error:
+  '/base/gen/codegen_output/language/f_bounded_quantification3_test.js',
+  '/base/gen/codegen_output/language/regress_16640_test.js',
+  '/base/gen/codegen_output/language/regress_22666_test.js',
+  '/base/gen/codegen_output/language/cyclic_type2_test.js',
+  '/base/gen/codegen_output/language/mixin_regress_13688_test.js',
+];
+
 Object.keys(window.__karma__.files).forEach(function(file) {
-  if (TEST_REGEXP.test(file)) {
+  if (TEST_REGEXP.test(file) && testsToSkip.indexOf(file) == -1) {
     // Normalize paths to RequireJS module names.
     allTestFiles.push(pathToModule(file));
   }
 });
 
+allTestFiles.push('test/browser/language_tests');
+allTestFiles.push('test/browser/runtime_tests');
+
 require.config({
   // Karma serves files under /base, which is the basePath from your config file
   baseUrl: '/base',
 
+  paths: {
+    dart_sdk: 'lib/js/amd/dart_sdk',
+    async_helper: 'gen/codegen_output/pkg/async_helper',
+    expect: 'gen/codegen_output/pkg/expect',
+    js: 'gen/codegen_output/pkg/js',
+    matcher: 'gen/codegen_output/pkg/matcher',
+    path: 'gen/codegen_output/pkg/path',
+    stack_trace: 'gen/codegen_output/pkg/stack_trace',
+    unittest: 'gen/codegen_output/pkg/unittest',
+  },
+
   // dynamically load all test files
   deps: allTestFiles,
 
   // we have to kickoff jasmine, as it is asynchronous
   callback: window.__karma__.start
 });