Files
sdk/tests/lib_2/async/stream_periodic6_test.dart
T
Sigmund Cherem fb29d0e96d Move async_minitest to package:async_helper.
This allows to break a circular dependency between package:expect and

package:async_helper, which will simplify the support for modular tests using
package:modular_test.
Change-Id: Ie48723d3f35d51a8fbe622e0158450e8104fe3f5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/102140
Reviewed-by: Johnni Winther <johnniwinther@google.com>
2019-05-10 19:43:58 +00:00

30 lines
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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.
// Test merging streams.
library dart.test.stream_from_iterable;
import 'dart:async';
import 'package:async_helper/async_minitest.dart';
main() {
test("stream-periodic1", () {
Stream stream = new Stream.periodic(const Duration(milliseconds: 1), (i) {
if (i == 3) throw 42;
return i;
});
int expected = 0;
var subscription;
subscription = stream.listen(
expectAsync((data) {
expect(data, expected++);
if (expected == 5) subscription.cancel();
}, count: 4), onError: expectAsync((e, s) {
expect(e, 42);
expected++;
}));
});
}