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Side by Side Diff: tests/lib_strong/async/catch_errors13_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) 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 import 'package:async_helper/async_helper.dart'; 5 import 'package:async_helper/async_helper.dart';
6 import "package:expect/expect.dart"; 6 import "package:expect/expect.dart";
7 import 'dart:async'; 7 import 'dart:async';
8 import 'catch_errors.dart'; 8 import 'catch_errors.dart';
9 9
10 main() { 10 main() {
11 asyncStart(); 11 asyncStart();
12 Completer done = new Completer(); 12 Completer done = new Completer();
13 13
14 var events = []; 14 var events = [];
15 // Work around bug that makes scheduleMicrotask use Timers. By invoking 15 // Work around bug that makes scheduleMicrotask use Timers. By invoking
16 // `scheduleMicrotask` here we make sure that asynchronous non-timer events 16 // `scheduleMicrotask` here we make sure that asynchronous non-timer events
17 // are executed before any Timer events. 17 // are executed before any Timer events.
18 scheduleMicrotask(() { }); 18 scheduleMicrotask(() {});
19 19
20 // Test that errors are caught by nested `catchErrors`. Also uses 20 // Test that errors are caught by nested `catchErrors`. Also uses
21 // `scheduleMicrotask` in the body of a Timer. 21 // `scheduleMicrotask` in the body of a Timer.
22 bool outerTimerRan = false; 22 bool outerTimerRan = false;
23 int outerTimerCounterDelayCount = 0; 23 int outerTimerCounterDelayCount = 0;
24 catchErrors(() { 24 catchErrors(() {
25 events.add("catch error entry"); 25 events.add("catch error entry");
26 catchErrors(() { 26 catchErrors(() {
27 events.add("catch error entry2"); 27 events.add("catch error entry2");
28 Timer.run(() { throw "timer error"; }); 28 Timer.run(() {
29 throw "timer error";
30 });
29 31
30 // We want this timer to run after the timer below. When the machine is 32 // We want this timer to run after the timer below. When the machine is
31 // slow we saw that the timer below was scheduled more than 50ms after 33 // slow we saw that the timer below was scheduled more than 50ms after
32 // this line. A duration of 50ms was therefore not enough to guarantee 34 // this line. A duration of 50ms was therefore not enough to guarantee
33 // that this timer runs before the timer below. 35 // that this timer runs before the timer below.
34 // Instead of increasing the duration to a bigger amount we decided to 36 // Instead of increasing the duration to a bigger amount we decided to
35 // verify that the other timer already ran, and reschedule if not. 37 // verify that the other timer already ran, and reschedule if not.
36 // This way we could reduce the timeout (to 10ms now), while still 38 // This way we could reduce the timeout (to 10ms now), while still
37 // allowing for more time, in case the machine is slow. 39 // allowing for more time, in case the machine is slow.
38 void runDelayed() { 40 void runDelayed() {
39 new Timer(const Duration(milliseconds: 10), 41 new Timer(const Duration(milliseconds: 10), () {
40 () { 42 if (outerTimerRan) {
41 if (outerTimerRan) { 43 scheduleMicrotask(() {
42 scheduleMicrotask(() { throw "scheduleMicrotask"; }); 44 throw "scheduleMicrotask";
43 throw "delayed error"; 45 });
44 } else if (outerTimerCounterDelayCount < 100) { 46 throw "delayed error";
45 outerTimerCounterDelayCount++; 47 } else if (outerTimerCounterDelayCount < 100) {
46 runDelayed(); 48 outerTimerCounterDelayCount++;
47 } 49 runDelayed();
48 }); 50 }
51 });
49 } 52 }
50 53
51 runDelayed(); 54 runDelayed();
52 }).listen((x) { 55 }).listen((x) {
53 events.add(x); 56 events.add(x);
54 if (x == "scheduleMicrotask") { 57 if (x == "scheduleMicrotask") {
55 throw "inner done throw"; 58 throw "inner done throw";
56 } 59 }
57 }); 60 });
58 events.add("after inner"); 61 events.add("after inner");
59 Timer.run(() { 62 Timer.run(() {
60 outerTimerRan = true; 63 outerTimerRan = true;
61 throw "timer outer"; 64 throw "timer outer";
62 }); 65 });
63 throw "inner throw"; 66 throw "inner throw";
64 }).listen((x) { 67 }).listen((x) {
65 events.add(x); 68 events.add(x);
66 if (x == "inner done throw") done.complete(true); 69 if (x == "inner done throw") done.complete(true);
67 }, 70 }, onDone: () {
68 onDone: () { Expect.fail("Unexpected callback"); }); 71 Expect.fail("Unexpected callback");
72 });
69 73
70 done.future.whenComplete(() { 74 done.future.whenComplete(() {
71 // Give callbacks time to run. 75 // Give callbacks time to run.
72 Timer.run(() { 76 Timer.run(() {
73 Expect.listEquals([ 77 Expect.listEquals([
74 "catch error entry", 78 "catch error entry",
75 "catch error entry2", 79 "catch error entry2",
76 "after inner", 80 "after inner",
77 "main exit", 81 "main exit",
78 "inner throw", 82 "inner throw",
79 "timer error", 83 "timer error",
80 "timer outer", 84 "timer outer",
81 "delayed error", 85 "delayed error",
82 "scheduleMicrotask", 86 "scheduleMicrotask",
83 "inner done throw" 87 "inner done throw"
84 ], 88 ], events);
85 events);
86 asyncEnd(); 89 asyncEnd();
87 }); 90 });
88 }); 91 });
89 events.add("main exit"); 92 events.add("main exit");
90 } 93 }
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