Add mirrors tests

test/codegen/lib/mirrors/intercepted_class_test.dart

+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+// Ensure that classes handled specially by dart2js can be reflected on.
+
+library test.intercepted_class_test;
+
+import 'dart:mirrors';
+
+import 'stringify.dart' show stringify, expect;
+
+checkClassMirrorMethods(ClassMirror cls) {
+  var variables = new Map();
+  cls.declarations.forEach((Symbol key, DeclarationMirror value) {
+    if (value is VariableMirror && !value.isStatic && !value.isPrivate) {
+      variables[key] = value;
+    }
+  });
+  expect('{}', variables);
+}
+
+checkClassMirror(ClassMirror cls, String name) {
+  expect('s($name)', cls.simpleName);
+  checkClassMirrorMethods(cls);
+}
+
+main() {
+  checkClassMirror(reflectClass(String), 'String');
+  checkClassMirror(reflectClass(int), 'int');
+  checkClassMirror(reflectClass(double), 'double');
+  checkClassMirror(reflectClass(num), 'num');
+  checkClassMirror(reflectClass(bool), 'bool');
+  checkClassMirror(reflectClass(List), 'List');
+}