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Unified Diff: tests/lib_strong/async/catch_errors21_test.dart

Issue 2802973005: Migrate async tests to strong (Closed)
Patch Set: Created 3 years, 8 months ago
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Index: tests/lib_strong/async/catch_errors21_test.dart
diff --git a/tests/lib_strong/async/catch_errors21_test.dart b/tests/lib_strong/async/catch_errors21_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..8b220f5957d0477e41822b7e0bf932df96104d44
--- /dev/null
+++ b/tests/lib_strong/async/catch_errors21_test.dart
@@ -0,0 +1,49 @@
+// 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:async_helper/async_helper.dart';
+import "package:expect/expect.dart";
+import 'dart:async';
+import 'catch_errors.dart';
+
+main() {
+ asyncStart();
+ Completer done = new Completer();
+
+ var events = [];
+ var controller = new StreamController();
+ // Test that stream errors, as a result of bad user-code (`map`) are correctly
+ // caught by `catchErrors`. Note that the values are added outside both
+ // `catchErrors`, but since the `listen` happens in the most nested
+ // `catchErrors` it is caught there.
+ catchErrors(() {
+ catchErrors(() {
+ controller.stream.map((x) { throw x; }).listen((x) {
+ // Should not happen.
+ events.add("bad: $x");
+ });
+ }).listen((x) {
+ events.add("caught: $x");
+ if (x == 4) done.complete(true);
+ },
+ onDone: () { Expect.fail("Unexpected callback"); });
+ }).listen((x) { events.add("outer: $x"); },
+ onDone: () { Expect.fail("Unexpected callback"); });
+
+ done.future.whenComplete(() {
+ // Give handlers time to run.
+ Timer.run(() {
+ Expect.listEquals(["caught: 1",
+ "caught: 2",
+ "caught: 3",
+ "caught: 4",
+ ],
+ events);
+ asyncEnd();
+ });
+ });
+
+ [1, 2, 3, 4].forEach(controller.add);
+ controller.close();
+}
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