Jacob Richman
2dcd56ef43
There are far too many files here to review everyone carefully. Spot checking most of the diffs look good as test code is generally written with less care than application code so lots of ugly formatting get through. If people notice files where the automated formatting bothers them feel free to comment indicating file names and I'll move spaces within comments to make the formatting cleaner and use comments to force block formatting as I have done for other case where formatting looked bad. BUG= R=efortuna@google.com Review-Url: https://codereview.chromium.org/2771453003 .
71 lines
1.7 KiB
Dart
71 lines
1.7 KiB
Dart
// Copyright (c) 2016, 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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import 'dart:async';
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import "package:expect/expect.dart";
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import "package:async_helper/async_helper.dart";
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class A {
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const A();
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}
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class B extends A {
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const B();
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}
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/// Stream which emits an error if it's not canceled at the correct time.
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///
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/// Must be canceled after at most [maxEvents] events.
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Stream makeStream(int maxEvents) {
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var c;
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int event = 0;
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bool canceled = false;
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c = new StreamController(onListen: () {
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new Timer.periodic(const Duration(milliseconds: 10), (t) {
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if (canceled) {
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t.cancel();
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return;
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}
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if (event == maxEvents) {
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c.addError("NOT CANCELED IN TIME: $maxEvents");
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c.close();
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t.cancel();
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} else {
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c.add(event++);
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}
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});
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}, onCancel: () {
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canceled = true;
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});
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return c.stream;
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}
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main() {
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asyncStart();
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tests().then((_) {
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asyncEnd();
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});
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}
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tests() async {
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await expectThrowsAsync(makeStream(4).take(5).toList(), "5/4");
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await expectThrowsAsync(makeStream(0).take(1).toList(), "1/0");
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Expect.listEquals([0, 1, 2, 3, 4], await makeStream(5).take(5).toList());
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Expect.listEquals([0, 1, 2, 3], await makeStream(5).take(4).toList());
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Expect.listEquals([0], await makeStream(5).take(1).toList());
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Expect.listEquals([], await makeStream(5).take(0).toList());
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Expect.listEquals([], await makeStream(0).take(0).toList());
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}
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Future expectThrowsAsync(Future computation, String name) {
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return computation.then((_) {
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Expect.fail("$name: Did not throw");
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}, onError: (e, s) {});
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}
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