Add mirrors tests

test/codegen/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 'stringify.dart';
+
+constructorsOf(ClassMirror cm) {
+  var result = new Map();
+  cm.declarations.forEach((k,v) {
+    if(v is MethodMirror && v.isConstructor) result[k] = v;
+  });
+  return result;
+}
+
+class Foo {
+}
+
+class Bar {
+  Bar();
+}
+
+class Baz {
+  Baz.named();
+}
+
+class Biz {
+  Biz();
+  Biz.named();
+}
+
+main() {
+  ClassMirror fooMirror = reflectClass(Foo);
+  Map<Symbol, MethodMirror> fooConstructors = constructorsOf(fooMirror);
+  ClassMirror barMirror = reflectClass(Bar);
+  Map<Symbol, MethodMirror> barConstructors = constructorsOf(barMirror);
+  ClassMirror bazMirror = reflectClass(Baz);
+  Map<Symbol, MethodMirror> bazConstructors = constructorsOf(bazMirror);
+  ClassMirror bizMirror = reflectClass(Biz);
+  Map<Symbol, MethodMirror> bizConstructors = constructorsOf(bizMirror);
+
+  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);
+
+  expect('[]', fooConstructors.values.single.parameters);
+  expect('[]', barConstructors.values.single.parameters);
+  expect('[]', bazConstructors.values.single.parameters);
+  for (var constructor in bizConstructors.values) {
+    expect('[]', constructor.parameters);
+  }
+
+  expect('[s()]',
+         fooConstructors.values.map((m) => m.constructorName).toList());
+  expect('[s()]',
+         barConstructors.values.map((m) => m.constructorName).toList());
+  expect('[s(named)]',
+         bazConstructors.values.map((m) => m.constructorName).toList());
+  expect('[s(), s(named)]',
+         bizConstructors.values.map((m) => m.constructorName).toList()
+             ..sort(compareSymbols));
+}