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Unified Diff: packages/async/test/typed_wrapper/future_test.dart

Issue 2989763002: Update charted to 0.4.8 and roll (Closed)
Patch Set: Removed Cutch from list of reviewers Created 3 years, 5 months ago
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Index: packages/async/test/typed_wrapper/future_test.dart
diff --git a/packages/async/test/typed_wrapper/future_test.dart b/packages/async/test/typed_wrapper/future_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..0c8b00ac8e66c7c66dac1ef7e054b33a00aca42d
--- /dev/null
+++ b/packages/async/test/typed_wrapper/future_test.dart
@@ -0,0 +1,109 @@
+// Copyright (c) 2016, 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 'dart:async';
+
+import "package:async/src/typed/future.dart";
+import "package:test/test.dart";
+
+import '../utils.dart';
+
+void main() {
+ group("with valid types, forwards", () {
+ var wrapper;
+ TypeSafeFuture<int> errorWrapper;
+ setUp(() {
+ wrapper = new TypeSafeFuture<int>(new Future<Object>.value(12));
+
+ var error = new Future<Object>.error("oh no");
+ error.catchError((_) {}); // Don't let the error cause the test to fail.
+ errorWrapper = new TypeSafeFuture<int>(error);
+ });
+
+ test("asStream()", () {
+ expect(wrapper.asStream().toList(), completion(equals([12])));
+ expect(errorWrapper.asStream().first, throwsA("oh no"));
+ });
+
+ test("catchError()", () {
+ expect(
+ wrapper.catchError(expectAsync1((_) {}, count: 0),
+ test: expectAsync1((_) {}, count: 0)),
+ completion(equals(12)));
+
+ expect(
+ errorWrapper.catchError(expectAsync1((error) {
+ expect(error, equals("oh no"));
+ return 42;
+ }), test: expectAsync1((error) {
+ expect(error, equals("oh no"));
+ return true;
+ })),
+ completion(equals(42)));
+ });
+
+ test("then()", () {
+ expect(
+ wrapper.then((value) => value.toString()), completion(equals("12")));
+ expect(
+ errorWrapper.then(expectAsync1((_) {}, count: 0)), throwsA("oh no"));
+ });
+
+ test("whenComplete()", () {
+ expect(wrapper.whenComplete(expectAsync0(() {})), completion(equals(12)));
+ expect(errorWrapper.whenComplete(expectAsync0(() {})), throwsA("oh no"));
+ });
+
+ test("timeout()", () {
+ expect(wrapper.timeout(new Duration(seconds: 1)), completion(equals(12)));
+ expect(errorWrapper.timeout(new Duration(seconds: 1)), throwsA("oh no"));
+
+ expect(
+ new TypeSafeFuture<int>(new Completer<Object>().future)
+ .timeout(Duration.ZERO),
+ throwsA(new isInstanceOf<TimeoutException>()));
+
+ expect(
+ new TypeSafeFuture<int>(new Completer<Object>().future)
+ .timeout(Duration.ZERO, onTimeout: expectAsync0(() => 15)),
+ completion(equals(15)));
+ });
+ });
+
+ group("with invalid types", () {
+ TypeSafeFuture<int> wrapper;
+ setUp(() {
+ wrapper = new TypeSafeFuture<int>(new Future<Object>.value("foo"));
+ });
+
+ group("throws a CastError for", () {
+ test("asStream()", () {
+ expect(wrapper.asStream().first, throwsCastError);
+ });
+
+ test("then()", () {
+ expect(
+ wrapper.then(expectAsync1((_) {}, count: 0),
+ onError: expectAsync1((_) {}, count: 0)),
+ throwsCastError);
+ });
+
+ test("whenComplete()", () {
+ expect(wrapper.whenComplete(expectAsync0(() {})).then((_) {}),
+ throwsCastError);
+ });
+
+ test("timeout()", () {
+ expect(wrapper.timeout(new Duration(seconds: 3)).then((_) {}),
+ throwsCastError);
+
+ expect(
+ new TypeSafeFuture<int>(new Completer<Object>().future)
+ .timeout(Duration.ZERO, onTimeout: expectAsync0(() => "foo"))
+ .then((_) {}),
+ throwsCastError);
+ });
+ });
+ });
+}

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