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sdk/tests/language_2/async_star/concat_test.dart
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Robert Nystrom fc1b1ecc71 Move files under language_2 into subdirectories.
Change-Id: Idbcc965a27e9ffeedf5e0a1068b019de4193070f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/127745
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
2019-12-11 19:18:00 +00:00

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627 B
Dart

// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import "package:expect/expect.dart";
import "package:async_helper/async_helper.dart";
range(start, end) async* {
for (int i = start; i < end; i++) {
yield i;
}
}
concat(a, b) async* {
yield* a;
yield* b;
}
test() async {
Expect.listEquals(
[1, 2, 3, 11, 12, 13], await concat(range(1, 4), range(11, 14)).toList());
}
main() {
asyncStart();
test().then((_) {
asyncEnd();
});
}