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Side by Side Diff: tests/lib_strong/async/catch_errors22_test.dart

Issue 2993213003: Migrated test block 167 to Dart 2.0. (Closed)
Patch Set: Created 3 years, 4 months ago
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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 import 'package:async_helper/async_helper.dart';
6 import "package:expect/expect.dart";
7 import 'dart:async';
8 import 'catch_errors.dart';
9
10 main() {
11 asyncStart();
12
13 var events = [];
14 bool onDoneWasCalled = false;
15 var controller = new StreamController();
16 // Test that streams that are never closed keep the `catchError` alive.
17 catchErrors(() {
18 catchErrors(() {
19 controller.stream.map((x) {
20 throw x;
21 }).listen((x) {
22 // Should not happen.
23 events.add("bad: $x");
24 });
25 }).listen((x) {
26 events.add("caught: $x");
27 }, onDone: () {
28 events.add("done");
29 });
30 }).listen((x) {
31 events.add("outer: $x");
32 }, onDone: () {
33 onDoneWasCalled = true;
34 });
35
36 [1, 2, 3, 4].forEach(controller.add);
37
38 new Timer(const Duration(milliseconds: 20), () {
39 Expect.isFalse(onDoneWasCalled);
40 Expect.listEquals([
41 "caught: 1",
42 "caught: 2",
43 "caught: 3",
44 "caught: 4",
45 ], events);
46 asyncEnd();
47 });
48 }
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