| // 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. |
| |
| import 'dart:async'; |
| |
| @lazy import 'deferred_class_library.dart'; |
| |
| const lazy = const DeferredLibrary('deferred_class_library'); |
| |
| isNoSuchMethodError(e) => e is NoSuchMethodError; |
| |
| main() { |
| var x; |
| Expect.throws(() { x = new MyClass(); }, isNoSuchMethodError); |
| Expect.isNull(x); |
| int counter = 0; |
| lazy.load().then((bool didLoad) { |
| Expect.isTrue(didLoad); |
| Expect.equals(1, ++counter); |
| print('deferred_class_library was loaded'); |
| x = new MyClass(); |
| Expect.equals(42, x.foo(87)); |
| }); |
| Expect.equals(0, counter); |
| Expect.isNull(x); |
| lazy.load().then((bool didLoad) { |
| Expect.isFalse(didLoad); |
| Expect.equals(2, ++counter); |
| print('deferred_class_library was loaded'); |
| x = new MyClass(); |
| Expect.equals(42, x.foo(87)); |
| }); |
| Expect.equals(0, counter); |
| Expect.isNull(x); |
| Expect.throws(() { x = new MyClass(); }, isNoSuchMethodError); |
| Expect.isNull(x); |
| } |