lrn@google.com
4868ee2110
Optimize Future.forEach, Future.delay. Review URL: https://codereview.chromium.org//11865005 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@16954 260f80e4-7a28-3924-810f-c04153c831b5
123 lines
3.2 KiB
Dart
123 lines
3.2 KiB
Dart
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library futures_test;
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import 'dart:async';
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import 'dart:isolate';
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Future testWaitEmpty() {
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List<Future> futures = new List<Future>();
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return Future.wait(futures);
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}
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Future testCompleteAfterWait() {
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List<Future> futures = new List<Future>();
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Completer<Object> c = new Completer<Object>();
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futures.add(c.future);
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Future future = Future.wait(futures);
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c.complete(null);
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return future;
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}
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Future testCompleteBeforeWait() {
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List<Future> futures = new List<Future>();
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Completer c = new Completer();
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futures.add(c.future);
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c.complete(null);
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return Future.wait(futures);
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}
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Future testWaitWithMultipleValues() {
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List<Future> futures = new List<Future>();
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Completer c1 = new Completer();
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Completer c2 = new Completer();
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futures.add(c1.future);
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futures.add(c2.future);
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c1.complete(1);
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c2.complete(2);
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return Future.wait(futures).then((values) {
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Expect.listEquals([1, 2], values);
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});
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}
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Future testWaitWithSingleError() {
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List<Future> futures = new List<Future>();
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Completer c1 = new Completer();
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Completer c2 = new Completer();
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futures.add(c1.future);
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futures.add(c2.future);
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c1.complete();
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c2.completeError('correct error');
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return Future.wait(futures).then((_) {
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throw 'incorrect error';
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}).catchError((e) {
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Expect.equals('correct error', e.error);
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});
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}
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Future testWaitWithMultipleErrors() {
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List<Future> futures = new List<Future>();
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Completer c1 = new Completer();
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Completer c2 = new Completer();
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futures.add(c1.future);
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futures.add(c2.future);
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c1.completeError('correct error');
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c2.completeError('incorrect error 1');
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return Future.wait(futures).then((_) {
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throw 'incorrect error 2';
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}).catchError((e) {
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Expect.equals('correct error', e.error);
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});
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}
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Future testForEachEmpty() {
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return Future.forEach([], (_) {
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throw 'should not be called';
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});
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}
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Future testForEach() {
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var seen = <int>[];
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return Future.forEach([1, 2, 3, 4, 5], (n) {
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seen.add(n);
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return new Future.immediate(null);
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}).then((_) => Expect.listEquals([1, 2, 3, 4, 5], seen));
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}
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Future testForEachWithException() {
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var seen = <int>[];
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return Future.forEach([1, 2, 3, 4, 5], (n) {
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if (n == 4) throw 'correct exception';
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seen.add(n);
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return new Future.immediate(null);
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}).then((_) {
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throw 'incorrect exception';
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}).catchError((e) {
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Expect.equals('correct exception', e.error);
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});
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}
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main() {
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List<Future> futures = new List<Future>();
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futures.add(testWaitEmpty());
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futures.add(testCompleteAfterWait());
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futures.add(testCompleteBeforeWait());
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futures.add(testWaitWithMultipleValues());
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futures.add(testWaitWithSingleError());
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futures.add(testWaitWithMultipleErrors());
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futures.add(testForEachEmpty());
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futures.add(testForEach());
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// Use a receive port for blocking the test.
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// Note that if the test fails, the program will not end.
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ReceivePort port = new ReceivePort();
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Future.wait(futures).then((List list) {
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Expect.equals(8, list.length);
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port.close();
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});
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}
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