dart-sdk/tests/language/async_star/concat_test.dart
Robert Nystrom b81f12a549 Migrate language_2/async_star to NNBD.
Change-Id: I0fa2ee2561dd0bc399d88868d790d56e6df3c94d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/134940
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
2020-02-21 00:22:06 +00:00

30 lines
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();
});
}