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| 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 |
| 3 // BSD-style license that can be found in the LICENSE file. |
| 4 |
| 5 library watcher.stat; |
| 6 |
| 7 import 'dart:async'; |
| 8 import 'dart:io'; |
| 9 |
| 10 /// A function that takes a file path and returns the last modified time for |
| 11 /// the file at that path. |
| 12 typedef DateTime MockTimeCallback(String path); |
| 13 |
| 14 MockTimeCallback _mockTimeCallback; |
| 15 |
| 16 /// Overrides the default behavior for accessing a file's modification time |
| 17 /// with [callback]. |
| 18 /// |
| 19 /// The OS file modification time has pretty rough granularity (like a few |
| 20 /// seconds) which can make for slow tests that rely on modtime. This lets you |
| 21 /// replace it with something you control. |
| 22 void mockGetModificationTime(MockTimeCallback callback) { |
| 23 _mockTimeCallback = callback; |
| 24 } |
| 25 |
| 26 /// Gets the modification time for the file at [path]. |
| 27 Future<DateTime> getModificationTime(String path) { |
| 28 if (_mockTimeCallback != null) { |
| 29 return new Future.value(_mockTimeCallback(path)); |
| 30 } |
| 31 |
| 32 return FileStat.stat(path).then((stat) => stat.modified); |
| 33 } |
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