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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 // Test that loading of a library (with top-level functions only) can | 5 // Test that loading of a library (with top-level functions only) can |
6 // be deferred. | 6 // be deferred. |
7 | 7 |
8 import "package:expect/expect.dart"; | 8 import '../../../async_helper.dart'; |
| 9 |
| 10 import 'package:expect/expect.dart'; |
| 11 |
9 import 'dart:async'; | 12 import 'dart:async'; |
| 13 |
10 @lazy import 'deferred_function_library.dart'; | 14 @lazy import 'deferred_function_library.dart'; |
11 | 15 |
12 const lazy = const DeferredLibrary('deferred_function_library'); | 16 const lazy = const DeferredLibrary('deferred_function_library'); |
13 | 17 |
14 isNoSuchMethodError(e) => e is NoSuchMethodError; | 18 isNoSuchMethodError(e) => e is NoSuchMethodError; |
15 | 19 |
16 readFoo() { | 20 readFoo() { |
17 // TODO(ahe): There is a problem with type inference of deferred | 21 // TODO(ahe): There is a problem with type inference of deferred |
18 // function closures. We think they are never null. | 22 // function closures. We think they are never null. |
19 if (new DateTime.now().millisecondsSinceEpoch == 87) return null; | 23 if (new DateTime.now().millisecondsSinceEpoch == 87) return null; |
20 return foo; | 24 return foo; |
21 } | 25 } |
22 | 26 |
23 main() { | 27 main() { |
24 print('unittest-suite-wait-for-done'); | |
25 | |
26 Expect.throws(() { foo('a'); }, isNoSuchMethodError); | 28 Expect.throws(() { foo('a'); }, isNoSuchMethodError); |
27 Expect.isNull(readFoo()); | 29 Expect.isNull(readFoo()); |
28 int counter = 0; | 30 int counter = 0; |
| 31 asyncStart(); |
29 lazy.load().then((bool didLoad) { | 32 lazy.load().then((bool didLoad) { |
30 Expect.isTrue(didLoad); | 33 Expect.isTrue(didLoad); |
31 Expect.equals(1, ++counter); | 34 Expect.equals(1, ++counter); |
32 print('lazy was loaded'); | 35 print('lazy was loaded'); |
33 Expect.equals(42, foo('b')); | 36 Expect.equals(42, foo('b')); |
34 Expect.isNotNull(readFoo()); | 37 Expect.isNotNull(readFoo()); |
| 38 asyncEnd(); |
35 }); | 39 }); |
36 Expect.equals(0, counter); | 40 Expect.equals(0, counter); |
| 41 asyncStart(); |
37 lazy.load().then((bool didLoad) { | 42 lazy.load().then((bool didLoad) { |
38 Expect.isFalse(didLoad); | 43 Expect.isFalse(didLoad); |
39 Expect.equals(2, ++counter); | 44 Expect.equals(2, ++counter); |
40 print('lazy was loaded'); | 45 print('lazy was loaded'); |
41 Expect.equals(42, foo('b')); | 46 Expect.equals(42, foo('b')); |
42 Expect.isNotNull(readFoo()); | 47 Expect.isNotNull(readFoo()); |
43 print('unittest-suite-success'); | 48 asyncEnd(); |
44 }); | 49 }); |
45 Expect.equals(0, counter); | 50 Expect.equals(0, counter); |
46 Expect.throws(() { foo('a'); }, isNoSuchMethodError); | 51 Expect.throws(() { foo('a'); }, isNoSuchMethodError); |
47 Expect.isNull(readFoo()); | 52 Expect.isNull(readFoo()); |
48 } | 53 } |
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