| // 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. |
| |
| // Test that loading of a library (with top-level functions only) can |
| // be deferred. |
| |
| import "package:expect/expect.dart"; |
| import 'dart:async'; |
| @lazy import 'deferred_function_library.dart'; |
| |
| const lazy = const DeferredLibrary('deferred_function_library'); |
| |
| isNoSuchMethodError(e) => e is NoSuchMethodError; |
| |
| main() { |
| print('unittest-suite-wait-for-done'); |
| |
| Expect.throws(() { foo('a'); }, isNoSuchMethodError); |
| int counter = 0; |
| lazy.load().then((bool didLoad) { |
| Expect.isTrue(didLoad); |
| Expect.equals(1, ++counter); |
| print('lazy was loaded'); |
| Expect.equals(42, foo('b')); |
| }); |
| Expect.equals(0, counter); |
| lazy.load().then((bool didLoad) { |
| Expect.isFalse(didLoad); |
| Expect.equals(2, ++counter); |
| print('lazy was loaded'); |
| Expect.equals(42, foo('b')); |
| print('unittest-suite-success'); |
| }); |
| Expect.equals(0, counter); |
| Expect.throws(() { foo('a'); }, isNoSuchMethodError); |
| } |