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1 // Copyright (c) 2016, 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 import "dart:async"; | |
6 | |
7 import "package:async/async.dart"; | |
8 import "package:test/test.dart"; | |
9 | |
10 import "utils.dart"; | |
11 | |
12 void main() { | |
13 group("constructors", () { | |
14 test("done defaults to a completed future", () { | |
15 var sink = new ClosedStreamSink(); | |
16 expect(sink.done, completes); | |
17 }); | |
18 | |
19 test("a custom future may be passed to done", () async { | |
20 var completer = new Completer(); | |
21 var sink = new ClosedStreamSink(done: completer.future); | |
22 | |
23 var doneFired = false; | |
24 sink.done.then((_) { | |
25 doneFired = true; | |
26 }); | |
27 await flushMicrotasks(); | |
28 expect(doneFired, isFalse); | |
29 | |
30 completer.complete(); | |
31 await flushMicrotasks(); | |
32 expect(doneFired, isTrue); | |
33 }); | |
34 | |
35 test("ClosedStreamSink.error passes an error to done", () { | |
36 var sink = new ClosedStreamSink.error("oh no"); | |
37 expect(sink.done, throwsA("oh no")); | |
38 }); | |
39 }); | |
40 | |
41 group("events", () { | |
42 test("are silently dropped before close", () { | |
43 var sink = new ClosedStreamSink(); | |
44 sink.add(1); | |
45 sink.addError("oh no"); | |
46 }); | |
47 | |
48 test("throw StateErrors after close", () { | |
49 var sink = new ClosedStreamSink(); | |
50 expect(sink.close(), completes); | |
51 | |
52 expect(() => sink.add(1), throwsStateError); | |
53 expect(() => sink.addError("oh no"), throwsStateError); | |
54 expect(() => sink.addStream(new Stream.empty()), throwsStateError); | |
55 }); | |
56 | |
57 group("addStream", () { | |
58 test("listens to the stream then cancels immediately", () async { | |
59 var sink = new ClosedStreamSink(); | |
60 var canceled = false; | |
61 var controller = new StreamController(onCancel: () { | |
62 canceled = true; | |
63 }); | |
64 | |
65 expect(sink.addStream(controller.stream), completes); | |
66 await flushMicrotasks(); | |
67 expect(canceled, isTrue); | |
68 }); | |
69 | |
70 test("returns the cancel future", () async { | |
71 var completer = new Completer(); | |
72 var sink = new ClosedStreamSink(); | |
73 var controller = new StreamController(onCancel: () => completer.future); | |
74 | |
75 var addStreamFired = false; | |
76 sink.addStream(controller.stream).then((_) { | |
77 addStreamFired = true; | |
78 }); | |
79 await flushMicrotasks(); | |
80 expect(addStreamFired, isFalse); | |
81 | |
82 completer.complete(); | |
83 await flushMicrotasks(); | |
84 expect(addStreamFired, isTrue); | |
85 }); | |
86 | |
87 test("pipes errors from the cancel future through addStream", () async { | |
88 var sink = new ClosedStreamSink(); | |
89 var controller = new StreamController(onCancel: () => throw "oh no"); | |
90 expect(sink.addStream(controller.stream), throwsA("oh no")); | |
91 }); | |
Lasse Reichstein Nielsen
2016/01/22 09:13:47
Test that calling add, addError, addStream and clo
nweiz
2016/01/25 22:39:25
Done.
| |
92 }); | |
93 }); | |
94 | |
95 test("close returns the done future", () { | |
96 var sink = new ClosedStreamSink.error("oh no"); | |
97 expect(sink.close(), throwsA("oh no")); | |
98 }); | |
99 } | |
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