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Side by Side Diff: tests/corelib/stopwatch_test.dart

Issue 11783009: Big merge from experimental to bleeding edge. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Created 7 years, 11 months ago
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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 // Dart test program for testing stopwatch support. 5 // Dart test program for testing stopwatch support.
6 6
7 library stopwatch_test; 7 library stopwatch_test;
8 import 'dart:math';
9 8
10 class StopwatchTest { 9 class StopwatchTest {
11 static bool checkTicking(Stopwatch sw) { 10 static bool checkTicking(Stopwatch sw) {
12 sw.start(); 11 sw.start();
13 for (int i = 0; i < 10000; i++) { 12 for (int i = 0; i < 10000; i++) {
14 parseInt(i.toString()); 13 int.parse(i.toString());
15 if (sw.elapsedTicks > 0) { 14 if (sw.elapsedTicks > 0) {
16 break; 15 break;
17 } 16 }
18 } 17 }
19 return sw.elapsedTicks > 0; 18 return sw.elapsedTicks > 0;
20 } 19 }
21 20
22 static bool checkStopping(Stopwatch sw) { 21 static bool checkStopping(Stopwatch sw) {
23 sw.stop(); 22 sw.stop();
24 int v1 = sw.elapsedTicks; 23 int v1 = sw.elapsedTicks;
25 Expect.isTrue(v1 > 0); // Expect a non-zero elapsed time. 24 Expect.isTrue(v1 > 0); // Expect a non-zero elapsed time.
26 Stopwatch sw2 = new Stopwatch(); // Used for verification. 25 Stopwatch sw2 = new Stopwatch(); // Used for verification.
27 sw2.start(); 26 sw2.start();
28 int sw2LastElapsed = 0; 27 int sw2LastElapsed = 0;
29 for (int i = 0; i < 100000; i++) { 28 for (int i = 0; i < 100000; i++) {
30 parseInt(i.toString()); 29 int.parse(i.toString());
31 int v2 = sw.elapsedTicks; 30 int v2 = sw.elapsedTicks;
32 if (v1 != v2) { 31 if (v1 != v2) {
33 return false; 32 return false;
34 } 33 }
35 // If sw2 elapsed twice then sw must have advanced too if it wasn't 34 // If sw2 elapsed twice then sw must have advanced too if it wasn't
36 // stopped. 35 // stopped.
37 if (sw2LastElapsed > 0 && sw2.elapsedTicks > sw2LastElapsed) { 36 if (sw2LastElapsed > 0 && sw2.elapsedTicks > sw2LastElapsed) {
38 break; 37 break;
39 } 38 }
40 sw2LastElapsed = sw2.elapsedTicks; 39 sw2LastElapsed = sw2.elapsedTicks;
41 } 40 }
42 // The test only makes sense if measureable time elapsed and elapsed time 41 // The test only makes sense if measureable time elapsed and elapsed time
43 // on the stopped Stopwatch did not increase. 42 // on the stopped Stopwatch did not increase.
44 Expect.isTrue(sw2.elapsedTicks > 0); 43 Expect.isTrue(sw2.elapsedTicks > 0);
45 return true; 44 return true;
46 } 45 }
47 46
48 static checkRestart() { 47 static checkRestart() {
49 Stopwatch sw = new Stopwatch(); 48 Stopwatch sw = new Stopwatch();
50 sw.start(); 49 sw.start();
51 for (int i = 0; i < 100000; i++) { 50 for (int i = 0; i < 100000; i++) {
52 parseInt(i.toString()); 51 int.parse(i.toString());
53 if (sw.elapsedTicks > 0) { 52 if (sw.elapsedTicks > 0) {
54 break; 53 break;
55 } 54 }
56 } 55 }
57 sw.stop(); 56 sw.stop();
58 int initial = sw.elapsedTicks; 57 int initial = sw.elapsedTicks;
59 sw.start(); 58 sw.start();
60 for (int i = 0; i < 100000; i++) { 59 for (int i = 0; i < 100000; i++) {
61 parseInt(i.toString()); 60 int.parse(i.toString());
62 if (sw.elapsedTicks > initial) { 61 if (sw.elapsedTicks > initial) {
63 break; 62 break;
64 } 63 }
65 } 64 }
66 sw.stop(); 65 sw.stop();
67 Expect.isTrue(sw.elapsedTicks > initial); 66 Expect.isTrue(sw.elapsedTicks > initial);
68 } 67 }
69 68
70 static checkReset() { 69 static checkReset() {
71 Stopwatch sw = new Stopwatch(); 70 Stopwatch sw = new Stopwatch();
72 sw.start(); 71 sw.start();
73 for (int i = 0; i < 100000; i++) { 72 for (int i = 0; i < 100000; i++) {
74 parseInt(i.toString()); 73 int.parse(i.toString());
75 if (sw.elapsedTicks > 0) { 74 if (sw.elapsedTicks > 0) {
76 break; 75 break;
77 } 76 }
78 } 77 }
79 sw.stop(); 78 sw.stop();
80 sw.reset(); 79 sw.reset();
81 Expect.equals(0, sw.elapsedTicks); 80 Expect.equals(0, sw.elapsedTicks);
82 sw.start(); 81 sw.start();
83 for (int i = 0; i < 100000; i++) { 82 for (int i = 0; i < 100000; i++) {
84 parseInt(i.toString()); 83 int.parse(i.toString());
85 if (sw.elapsedTicks > 0) { 84 if (sw.elapsedTicks > 0) {
86 break; 85 break;
87 } 86 }
88 } 87 }
89 sw.reset(); 88 sw.reset();
90 for (int i = 0; i < 100000; i++) { 89 for (int i = 0; i < 100000; i++) {
91 parseInt(i.toString()); 90 int.parse(i.toString());
92 if (sw.elapsedTicks > 0) { 91 if (sw.elapsedTicks > 0) {
93 break; 92 break;
94 } 93 }
95 } 94 }
96 sw.stop(); 95 sw.stop();
97 Expect.isTrue(sw.elapsedTicks > 0); 96 Expect.isTrue(sw.elapsedTicks > 0);
98 } 97 }
99 98
100 static testMain() { 99 static testMain() {
101 Stopwatch sw = new Stopwatch(); 100 Stopwatch sw = new Stopwatch();
102 Expect.isTrue(checkTicking(sw)); 101 Expect.isTrue(checkTicking(sw));
103 Expect.isTrue(checkStopping(sw)); 102 Expect.isTrue(checkStopping(sw));
104 checkRestart(); 103 checkRestart();
105 checkReset(); 104 checkReset();
106 } 105 }
107 } 106 }
108 107
109 main() { 108 main() {
110 StopwatchTest.testMain(); 109 StopwatchTest.testMain();
111 } 110 }
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