| /* |
| * Copyright (c) 2011, 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. |
| */ |
| /** |
| * @assertion final int elapsedTicks |
| * Returns the elapsed number of clock ticks since calling [start] |
| * while the [Stopwatch] is running. |
| * Returns the elapsed number of clock ticks between calling [start] and calling |
| * [stop]. |
| * Returns 0 if the [Stopwatch] has never been started. |
| * The elapsed number of clock ticks increases by [frequency] every second. |
| * @description Checks that the elapsed tick count does not change between |
| * invocations of stop() and start(). |
| * @author kaigorodov |
| */ |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| Duration delay = durationMs(10); |
| Stopwatch sw = new Stopwatch(); |
| int count = 5; |
| int e0; |
| |
| main() { |
| e0 = sw.elapsedTicks; |
| asyncStart(); |
| new Timer(delay, proc1); |
| } |
| |
| void proc1() { |
| int e1 = sw.elapsedTicks; |
| Expect.isTrue(e1 == e0); |
| if (count == 0) { |
| asyncEnd(); |
| return; |
| } |
| count--; |
| sw.start(); |
| sw.stop(); |
| e0 = sw.elapsedTicks; |
| new Timer(delay, proc1); |
| } |