Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(753)

Unified Diff: test/utils.dart

Issue 1149563010: Add new features to package:async. (Closed) Base URL: https://github.com/dart-lang/async@master
Patch Set: Address comments. Created 5 years, 6 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
« no previous file with comments | « test/subscription_stream_test.dart ('k') | no next file » | no next file with comments »
Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
Index: test/utils.dart
diff --git a/test/utils.dart b/test/utils.dart
new file mode 100644
index 0000000000000000000000000000000000000000..d8b9ad535496ddbe32873750c3cc1a0a3d90eaeb
--- /dev/null
+++ b/test/utils.dart
@@ -0,0 +1,25 @@
+// 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.
+
+/// Helper utilities for testing.
+library async.test.util;
+
+import "dart:async";
+
+/// A zero-millisecond timer should wait until after all microtasks.
+Future flushMicrotasks() => new Future.delayed(Duration.ZERO);
+
+/// A generic unreachable callback function.
+///
+/// Returns a function that fails the test if it is ever called.
+unreachable(String name) => ([a, b]) => fail("Unreachable: $name");
+
+/// A badly behaved stream which throws if it's ever listened to.
+///
+/// Can be used to test cases where a stream should not be used.
+class UnusableStream extends Stream {
+ listen(onData, {onError, onDone, cancelOnError}) {
+ throw new UnimplementedError("Gotcha!");
+ }
+}
« no previous file with comments | « test/subscription_stream_test.dart ('k') | no next file » | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698