blob: aed799be04c8dbe0d6edb3b00d3459a7f232da4e [file] [log] [blame]
// 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.
// @dart = 2.9
import "dart:async";
import "package:expect/expect.dart";
import "package:async_helper/async_helper.dart";
main() {
asyncStart();
bool waitedForCancel = false;
var controller = new StreamController(
onCancel: () => new Future(() => waitedForCancel = true));
var sub = controller.stream.take(1).listen((x) {
Expect.fail("onData should not be called");
});
var cancelFuture = sub.cancel();
Expect.isNotNull(cancelFuture);
cancelFuture.then((_) {
Expect.isTrue(waitedForCancel);
asyncEnd();
});
}