Files
sdk/tests/lib_2/async/null_future_zone_test.dart
T
Lasse R.H. Nielsen 91ce347309 Reapply "Create _nullFuture and _falseFuture in the root zone."
Originally landed by https://dart-review.googlesource.com/c/sdk/+/49509
Reverted because an internal test is fragile and changes behavior when the bug is fixed.

Change-Id: I8516082e5741547c46aa521a91826846dc101303
Reviewed-on: https://dart-review.googlesource.com/63743
Reviewed-by: Leaf Petersen <leafp@google.com>
Commit-Queue: Leaf Petersen <leafp@google.com>
2018-07-16 16:19:15 +00:00

37 lines
1013 B
Dart

// Copyright (c) 2013, 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";
import 'dart:async';
main() {
asyncStart(2);
() async {
var it = new StreamIterator(new Stream.fromIterable([]));
Expect.isFalse(await it.moveNext());
Future nullFuture;
Future falseFuture;
runZoned(() {
nullFuture = (new StreamController()..stream.listen(null).cancel()).done;
falseFuture = it.moveNext();
}, zoneSpecification: new ZoneSpecification(scheduleMicrotask:
(Zone self, ZoneDelegate parent, Zone zone, void f()) {
Expect.fail("Should not be called");
}));
nullFuture.then((value) {
Expect.isNull(value);
asyncEnd();
});
falseFuture.then((value) {
Expect.isFalse(value);
asyncEnd();
});
}();
}