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b998b10f3e
Change-Id: I3a31632ce28fb87a410b759d092c7ebc9393574d Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/128306 Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
129 lines
3.2 KiB
Dart
129 lines
3.2 KiB
Dart
// Copyright (c) 2012, 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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// Dart test program for testing stopwatch support.
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library stopwatch_test;
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import "package:expect/expect.dart";
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class StopwatchTest {
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static bool checkTicking(Stopwatch sw) {
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Expect.isFalse(sw.isRunning);
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sw.start();
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Expect.isTrue(sw.isRunning);
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for (int i = 0; i < 1000000; i++) {
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int.parse(i.toString());
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if (sw.elapsedTicks > 0) {
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break;
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}
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}
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return sw.elapsedTicks > 0;
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}
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static bool checkStopping(Stopwatch sw) {
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sw.stop();
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Expect.isFalse(sw.isRunning);
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int v1 = sw.elapsedTicks;
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Expect.isTrue(v1 > 0); // Expect a non-zero elapsed time.
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Stopwatch sw2 = new Stopwatch(); // Used for verification.
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sw2.start();
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Expect.isTrue(sw2.isRunning);
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int sw2LastElapsed = 0;
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for (int i = 0; i < 100000; i++) {
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int.parse(i.toString());
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int v2 = sw.elapsedTicks;
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if (v1 != v2) {
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return false;
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}
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// If sw2 elapsed twice then sw must have advanced too if it wasn't
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// stopped.
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if (sw2LastElapsed > 0 && sw2.elapsedTicks > sw2LastElapsed) {
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break;
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}
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sw2LastElapsed = sw2.elapsedTicks;
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}
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// The test only makes sense if measureable time elapsed and elapsed time
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// on the stopped Stopwatch did not increase.
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Expect.isTrue(sw2.elapsedTicks > 0);
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return true;
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}
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static checkRestart() {
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Stopwatch sw = new Stopwatch();
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Expect.isFalse(sw.isRunning);
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sw.start();
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Expect.isTrue(sw.isRunning);
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for (int i = 0; i < 100000; i++) {
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int.parse(i.toString());
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if (sw.elapsedTicks > 0) {
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break;
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}
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}
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sw.stop();
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Expect.isFalse(sw.isRunning);
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int initial = sw.elapsedTicks;
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sw.start();
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Expect.isTrue(sw.isRunning);
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for (int i = 0; i < 100000; i++) {
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int.parse(i.toString());
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if (sw.elapsedTicks > initial) {
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break;
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}
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}
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sw.stop();
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Expect.isFalse(sw.isRunning);
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Expect.isTrue(sw.elapsedTicks > initial);
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}
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static checkReset() {
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Stopwatch sw = new Stopwatch();
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Expect.isFalse(sw.isRunning);
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sw.start();
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Expect.isTrue(sw.isRunning);
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for (int i = 0; i < 100000; i++) {
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int.parse(i.toString());
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if (sw.elapsedTicks > 0) {
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break;
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}
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}
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sw.stop();
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Expect.isFalse(sw.isRunning);
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sw.reset();
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Expect.isFalse(sw.isRunning);
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Expect.equals(0, sw.elapsedTicks);
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sw.start();
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Expect.isTrue(sw.isRunning);
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for (int i = 0; i < 100000; i++) {
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int.parse(i.toString());
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if (sw.elapsedTicks > 0) {
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break;
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}
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}
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sw.reset();
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Expect.isTrue(sw.isRunning);
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for (int i = 0; i < 100000; i++) {
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int.parse(i.toString());
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if (sw.elapsedTicks > 0) {
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break;
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}
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}
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sw.stop();
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Expect.isFalse(sw.isRunning);
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Expect.isTrue(sw.elapsedTicks > 0);
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}
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static testMain() {
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Stopwatch sw = new Stopwatch();
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Expect.isTrue(checkTicking(sw));
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Expect.isTrue(checkStopping(sw));
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checkRestart();
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checkReset();
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}
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}
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main() {
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StopwatchTest.testMain();
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}
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