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Side by Side Diff: tests/language/async_star_pause_test.dart

Issue 2986093002: Revert two Kernel changes that were causing test failures. (Closed)
Patch Set: Revert "Migrate language/async_backwards... ... language/async_star_take..." Created 3 years, 4 months ago
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1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2015, 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 library async_star_pause_test; 5 library async_star_pause_test;
6 6
7 import "package:async_helper/async_helper.dart"; 7 import "package:unittest/unittest.dart";
8 import "package:expect/expect.dart";
9 import "dart:async"; 8 import "dart:async";
10 9
11 main() { 10 main() {
12 // await for pauses stream during body. 11 test("await for pauses stream during body", () async {
13 asyncTest(() async {
14 // Assumes await-for uses streamIterator. 12 // Assumes await-for uses streamIterator.
15 var log = []; 13 var log = [];
16 var s = () async* { 14 var s = () async* {
17 for (int i = 0; i < 3; i++) { 15 for (int i = 0; i < 3; i++) {
18 log.add("$i-"); 16 log.add("$i-");
19 yield i; 17 yield i;
20 // Should pause here until next iteration of await-for loop. 18 // Should pause here until next iteration of await-for loop.
21 log.add("$i+"); 19 log.add("$i+");
22 } 20 }
23 }(); 21 }();
24 await for (var i in s) { 22 await for (var i in s) {
25 log.add("$i?"); 23 log.add("$i?");
26 await nextMicrotask(); 24 await nextMicrotask();
27 log.add("$i!"); 25 log.add("$i!");
28 } 26 }
29 Expect.listEquals(log, [ 27 expect(log, [
30 "0-", 28 "0-",
31 "0?", 29 "0?",
32 "0!", 30 "0!",
33 "0+", 31 "0+",
34 "1-", 32 "1-",
35 "1?", 33 "1?",
36 "1!", 34 "1!",
37 "1+", 35 "1+",
38 "2-", 36 "2-",
39 "2?", 37 "2?",
40 "2!", 38 "2!",
41 "2+" 39 "2+"
42 ]); 40 ]);
43 }); 41 });
44 } 42 }
45 43
46 Future nextMicrotask() => new Future.microtask(() {}); 44 Future nextMicrotask() => new Future.microtask(() {});
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