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Unified Diff: tests/lib_strong/async/stream_subscription_as_future_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/stream_subscription_as_future_test.dart
diff --git a/tests/lib_strong/async/stream_subscription_as_future_test.dart b/tests/lib_strong/async/stream_subscription_as_future_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..841298b1990339a5440dff21a6bb59d35b4307e8
--- /dev/null
+++ b/tests/lib_strong/async/stream_subscription_as_future_test.dart
@@ -0,0 +1,126 @@
+// 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 the Stream.single method.
+library stream_single_test;
+
+import "package:expect/expect.dart";
+import 'dart:async';
+import 'package:unittest/unittest.dart';
+
+main() {
+ test("subscription.asFuture success", () {
+ Stream stream = new Stream.fromIterable([1, 2, 3]);
+ var output = [];
+ var subscription = stream.listen((x) { output.add(x); });
+ subscription.asFuture(output).then(expectAsync((o) {
+ Expect.listEquals([1, 2, 3], o);
+ }));
+ });
+
+ test("subscription.asFuture success2", () {
+ StreamController controller = new StreamController(sync: true);
+ [1, 2, 3].forEach(controller.add);
+ controller.close();
+ Stream stream = controller.stream;
+ var output = [];
+ var subscription = stream.listen((x) { output.add(x); });
+ subscription.asFuture(output).then(expectAsync((o) {
+ Expect.listEquals([1, 2, 3], o);
+ }));
+ });
+
+ test("subscription.asFuture success 3", () {
+ Stream stream = new Stream.fromIterable([1, 2, 3]).map((x) => x);
+ var output = [];
+ var subscription = stream.listen((x) { output.add(x); });
+ subscription.asFuture(output).then(expectAsync((o) {
+ Expect.listEquals([1, 2, 3], o);
+ }));
+ });
+
+ test("subscription.asFuture different type", () {
+ Stream stream = new Stream<int>.fromIterable([1, 2, 3]);
+ var asyncCallback = expectAsync(() => {});
+ var output = [];
+ var subscription = stream.listen((x) { output.add(x); });
+ subscription.asFuture("string").then((String o) {
+ Expect.listEquals([1, 2, 3], output);
+ Expect.equals("string", o);
+ asyncCallback();
+ });
+ });
+
+ test("subscription.asFuture failure", () {
+ StreamController controller = new StreamController(sync: true);
+ [1, 2, 3].forEach(controller.add);
+ controller.addError("foo");
+ controller.close();
+ Stream stream = controller.stream;
+ var output = [];
+ var subscription = stream.listen((x) { output.add(x); });
+ subscription.asFuture(output).catchError(expectAsync((error) {
+ Expect.equals(error, "foo");
+ }));
+ });
+
+ test("subscription.asFuture failure2", () {
+ Stream stream = new Stream.fromIterable([1, 2, 3, 4])
+ .map((x) {
+ if (x == 4) throw "foo";
+ return x;
+ });
+ var output = [];
+ var subscription = stream.listen((x) { output.add(x); });
+ subscription.asFuture(output).catchError(expectAsync((error) {
+ Expect.equals(error, "foo");
+ }));
+ });
+
+ test("subscription.asFuture delayed cancel", () {
+ var completer = new Completer();
+ var controller =
+ new StreamController(onCancel: () => completer.future, sync: true);
+ [1, 2, 3].forEach(controller.add);
+ controller.addError("foo");
+ controller.close();
+ Stream stream = controller.stream;
+ var output = [];
+ var subscription = stream.listen((x) { output.add(x); });
+ bool catchErrorHasRun = false;
+ subscription.asFuture(output).catchError(expectAsync((error) {
+ Expect.equals(error, "foo");
+ catchErrorHasRun = true;
+ }));
+ Timer.run(expectAsync(() {
+ Expect.isFalse(catchErrorHasRun);
+ completer.complete();
+ }));
+ });
+
+ test("subscription.asFuture failure in cancel", () {
+ runZoned(() {
+ var completer = new Completer();
+ var controller =
+ new StreamController(onCancel: () => completer.future, sync: true);
+ [1, 2, 3].forEach(controller.add);
+ controller.addError("foo");
+ controller.close();
+ Stream stream = controller.stream;
+ var output = [];
+ var subscription = stream.listen((x) { output.add(x); });
+ bool catchErrorHasRun = false;
+ subscription.asFuture(output).catchError(expectAsync((error) {
+ Expect.equals(error, "foo");
+ catchErrorHasRun = true;
+ }));
+ Timer.run(expectAsync(() {
+ Expect.isFalse(catchErrorHasRun);
+ completer.completeError(499);
+ }));
+ }, onError: expectAsync((e) {
+ Expect.equals(499, e);
+ }));
+ });
+}
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