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Side by Side Diff: tests/language/async_star_take_reyield_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 import "dart:async"; 5 import "dart:async";
6 import "package:expect/expect.dart"; 6 import "package:expect/expect.dart";
7 import "package:async_helper/async_helper.dart"; 7 import "package:async_helper/async_helper.dart";
8 8
9 expectList(stream, list) { 9 expectList(stream, list) {
10 return stream.toList().then((v) { 10 return stream.toList().then((v) {
11 Expect.listEquals(v, list); 11 Expect.listEquals(v, list);
12 }); 12 });
13 } 13 }
14 14
15 Stream makeStream(int n) async* { 15 Stream makeStream(int n) async* {
16 for (int i = 0; i < n; i++) yield i; 16 for (int i = 0; i < n; i++) yield i;
17 } 17 }
18 18
19 main() { 19 main() {
20 fivePartialSums(Stream s) async* { 20 fivePartialSums(Stream s) async* {
21 var r = 0; 21 var r = 0;
22 await for (var v in s.take(5)) yield r += v; 22 await for (var v in s.take(5)) yield r += v;
23 } 23 }
24 24
25 asyncStart(); 25 asyncStart();
26 expectList(fivePartialSums(makeStream(10)), [0, 1, 3, 6, 10]) 26 expectList(fivePartialSums(makeStream(10)), [0, 1, 3, 6, 10])
27 .then(asyncSuccess); 27 .then(asyncSuccess);
28 } 28 }
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