Implement JsClassMirror.constructors.

dart/tests/lib/mirrors/constructors_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.
+
+library test.constructors_test;
+
+import 'dart:mirrors';
+
+import 'package:expect/expect.dart';
+
+import 'reflect_model_test.dart';
+
+class Foo {
+}
+
+class Bar {
+  Bar();
+}
+
+class Baz {
+  Baz.named();
+}
+
+class Biz {
+  Biz();
+  Biz.named();
+}
+
+main() {
+  MirrorSystem mirrors = currentMirrorSystem();
+  ClassMirror fooMirror = reflectClass(Foo);
+  Map<Symbol, MethodMirror> fooConstructors = fooMirror.constructors;
+  ClassMirror barMirror = reflectClass(Bar);
+  Map<Symbol, MethodMirror> barConstructors = barMirror.constructors;
+  ClassMirror bazMirror = reflectClass(Baz);
+  Map<Symbol, MethodMirror> bazConstructors = bazMirror.constructors;
+  ClassMirror bizMirror = reflectClass(Biz);
+  Map<Symbol, MethodMirror> bizConstructors = bizMirror.constructors;
+
+  expect('{Foo: Method(s(Foo) in s(Foo), constructor)}', fooConstructors);
+  expect('{Bar: Method(s(Bar) in s(Bar), constructor)}', barConstructors);
+  expect('{Baz.named: Method(s(Baz.named) in s(Baz), constructor)}',
+         bazConstructors);
+  expect('{Biz: Method(s(Biz) in s(Biz), constructor),'
+         ' Biz.named: Method(s(Biz.named) in s(Biz), constructor)}',
+         bizConstructors);
+  print(bizConstructors);
+}