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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 // Test the event/callback protocol of the stream implementations. |
| 6 // Uses a non-zero timer so it fails on d8. |
| 7 |
| 8 library stream_state_nonzero_timer_test; |
| 9 |
| 10 import "dart:async"; |
| 11 import "package:unittest/unittest.dart"; |
| 12 import "stream_state_helper.dart"; |
| 13 |
| 14 const ms5 = const Duration(milliseconds: 5); |
| 15 |
| 16 // Testing pause/resume, some with non-zero duration. This only makes sense for |
| 17 // non-broadcast streams, since broadcast stream subscriptions handle their |
| 18 // own pauses. |
| 19 |
| 20 main() { |
| 21 var p = "StreamController"; |
| 22 |
| 23 test("$p-sub-data/pause/resume/pause/resume-done", () { |
| 24 var t = new StreamProtocolTest(); |
| 25 t..expectListen() |
| 26 ..expectData(42, () { |
| 27 t.pause(); |
| 28 }) |
| 29 ..expectPause(() { t.resume(); }) |
| 30 ..expectResume(() { t.pause(); }) |
| 31 ..expectPause(() { t.resume(); }) |
| 32 ..expectResume(() { t.close(); }) |
| 33 ..expectCancel() |
| 34 ..expectDone(t.terminate); |
| 35 t..listen()..add(42); |
| 36 }); |
| 37 |
| 38 test("$p-sub-data/pause-done", () { |
| 39 var t = new StreamProtocolTest(); |
| 40 t..expectListen() |
| 41 ..expectData(42, () { |
| 42 t.pause(new Future.delayed(ms5, () => null)); |
| 43 }) |
| 44 ..expectPause() |
| 45 ..expectCancel() |
| 46 ..expectDone(t.terminate); |
| 47 // We are calling "close" while the controller is actually paused, |
| 48 // and it will stay paused until the pending events are sent. |
| 49 t..listen()..add(42)..close(); |
| 50 }); |
| 51 |
| 52 test("$p-sub-data/pause-resume/done", () { |
| 53 var t = new StreamProtocolTest(); |
| 54 t..expectListen() |
| 55 ..expectData(42, () { |
| 56 t.pause(new Future.delayed(ms5, () => null)); |
| 57 }) |
| 58 ..expectPause() |
| 59 ..expectResume(t.close) |
| 60 ..expectCancel() |
| 61 ..expectDone(t.terminate); |
| 62 t..listen()..add(42); |
| 63 }); |
| 64 |
| 65 test("$p-sub-data/data+pause-data-resume-done", () { |
| 66 var t = new StreamProtocolTest(); |
| 67 t..expectListen() |
| 68 ..expectData(42, () { |
| 69 t.add(43); |
| 70 t.pause(new Future.delayed(ms5, () => null)); |
| 71 // Should now be paused until the future finishes. |
| 72 // After that, the controller stays paused until the pending queue |
| 73 // is empty. |
| 74 }) |
| 75 ..expectPause() |
| 76 ..expectData(43) |
| 77 ..expectResume(t.close) |
| 78 ..expectCancel() |
| 79 ..expectDone(t.terminate); |
| 80 t..listen()..add(42); |
| 81 }); |
| 82 |
| 83 test("$p-pause-during-callback", () { |
| 84 var t = new StreamProtocolTest(); |
| 85 t..expectListen() |
| 86 ..expectData(42, () { |
| 87 t.pause(); |
| 88 }) |
| 89 ..expectPause(() { |
| 90 t.resume(); |
| 91 }) |
| 92 ..expectResume(() { |
| 93 t.pause(); |
| 94 t.resume(); |
| 95 t.close(); |
| 96 }) |
| 97 ..expectCancel() |
| 98 ..expectDone(t.terminate); |
| 99 t..listen() |
| 100 ..add(42); |
| 101 }); |
| 102 } |
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