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Side by Side Diff: tests/lib_strong/async/slow_consumer2_test.dart

Issue 2771453003: Format all tests. (Closed)
Patch Set: Format files Created 3 years, 8 months ago
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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2012, 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 // VMOptions=--old_gen_heap_size=64 5 // VMOptions=--old_gen_heap_size=64
6 6
7 library slow_consumer2_test; 7 library slow_consumer2_test;
8 8
9 import 'package:async_helper/async_helper.dart'; 9 import 'package:async_helper/async_helper.dart';
10 import "package:expect/expect.dart"; 10 import "package:expect/expect.dart";
(...skipping 13 matching lines...) Expand all
24 24
25 SlowConsumer(int this.bytesPerSecond, int this.bufferSize); 25 SlowConsumer(int this.bytesPerSecond, int this.bufferSize);
26 26
27 Future consume(Stream stream) { 27 Future consume(Stream stream) {
28 return addStream(stream).then((_) => close()); 28 return addStream(stream).then((_) => close());
29 } 29 }
30 30
31 Future addStream(Stream stream) { 31 Future addStream(Stream stream) {
32 Completer result = new Completer(); 32 Completer result = new Completer();
33 var subscription; 33 var subscription;
34 subscription = stream.listen( 34 subscription = stream.listen((List<int> data) {
35 (List<int> data) { 35 receivedCount += data.length;
36 receivedCount += data.length; 36 usedBufferSize += data.length;
37 usedBufferSize += data.length; 37 bufferedData.add(data);
38 bufferedData.add(data); 38 int currentBufferedDataLength = bufferedData.length;
39 int currentBufferedDataLength = bufferedData.length; 39 if (usedBufferSize > bufferSize) {
40 if (usedBufferSize > bufferSize) { 40 subscription.pause();
41 subscription.pause(); 41 usedBufferSize = 0;
42 usedBufferSize = 0; 42 int ms = data.length * 1000 ~/ bytesPerSecond;
43 int ms = data.length * 1000 ~/ bytesPerSecond; 43 Duration duration = new Duration(milliseconds: ms);
44 Duration duration = new Duration(milliseconds: ms); 44 new Timer(duration, () {
45 new Timer(duration, () { 45 for (int i = 0; i < currentBufferedDataLength; i++) {
46 for (int i = 0; i < currentBufferedDataLength; i++) { 46 bufferedData[i] = null;
47 bufferedData[i] = null; 47 }
48 } 48 subscription.resume();
49 subscription.resume(); 49 });
50 }); 50 }
51 } 51 }, onDone: () {
52 }, 52 finalCount = receivedCount;
53 onDone: () { 53 result.complete(receivedCount);
54 finalCount = receivedCount; 54 });
55 result.complete(receivedCount);
56 });
57 return result.future; 55 return result.future;
58 } 56 }
59 57
60 Future close() { 58 Future close() {
61 return new Future.value(finalCount); 59 return new Future.value(finalCount);
62 } 60 }
63 } 61 }
64 62
65 class DataProvider { 63 class DataProvider {
66 final int chunkSize; 64 final int chunkSize;
67 final int bytesPerSecond; 65 final int bytesPerSecond;
68 int sentCount = 0; 66 int sentCount = 0;
69 int targetCount; 67 int targetCount;
70 StreamController controller; 68 StreamController controller;
71 69
72 DataProvider(int this.bytesPerSecond, int this.targetCount, this.chunkSize) { 70 DataProvider(int this.bytesPerSecond, int this.targetCount, this.chunkSize) {
73 controller = new StreamController( 71 controller = new StreamController(
74 sync: true, 72 sync: true, onPause: onPauseStateChange, onResume: onPauseStateChange);
75 onPause: onPauseStateChange,
76 onResume: onPauseStateChange);
77 Timer.run(send); 73 Timer.run(send);
78 } 74 }
79 75
80 Stream get stream => controller.stream; 76 Stream get stream => controller.stream;
81 77
82 send() { 78 send() {
83 if (controller.isPaused) return; 79 if (controller.isPaused) return;
84 if (sentCount == targetCount) { 80 if (sentCount == targetCount) {
85 controller.close(); 81 controller.close();
86 return; 82 return;
(...skipping 21 matching lines...) Expand all
108 asyncStart(); 104 asyncStart();
109 // The data provider can deliver 800MB/s of data. It sends 100MB of data to 105 // The data provider can deliver 800MB/s of data. It sends 100MB of data to
110 // the slower consumer who can only read 200MB/s. The data is sent in 1MB 106 // the slower consumer who can only read 200MB/s. The data is sent in 1MB
111 // chunks. The consumer has a buffer of 5MB. That is, it can accept a few 107 // chunks. The consumer has a buffer of 5MB. That is, it can accept a few
112 // packages without pausing its input. 108 // packages without pausing its input.
113 // 109 //
114 // This test is limited to 32MB of heap-space (see VMOptions on top of the 110 // This test is limited to 32MB of heap-space (see VMOptions on top of the
115 // file). If the consumer doesn't pause the data-provider it will run out of 111 // file). If the consumer doesn't pause the data-provider it will run out of
116 // heap-space. 112 // heap-space.
117 113
118 new DataProvider(800 * MB, 100 * MB, 1 * MB).stream 114 new DataProvider(800 * MB, 100 * MB, 1 * MB)
119 .pipe(new SlowConsumer(200 * MB, 5 * MB)) 115 .stream
120 .then((count) { 116 .pipe(new SlowConsumer(200 * MB, 5 * MB))
121 Expect.equals(100 * MB, count); 117 .then((count) {
122 asyncEnd(); 118 Expect.equals(100 * MB, count);
123 }); 119 asyncEnd();
120 });
124 } 121 }
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