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

Issue 10829459: Deprecate Math object in corelib in favor of dart:math library. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Address review comments. Created 8 years, 4 months ago
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1 // Copyright (c) 2011, 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');
8 #import('dart:math');
9
7 class StopwatchTest { 10 class StopwatchTest {
8 static bool checkTicking(Stopwatch sw) { 11 static bool checkTicking(Stopwatch sw) {
9 sw.start(); 12 sw.start();
10 for (int i = 0; i < 10000; i++) { 13 for (int i = 0; i < 10000; i++) {
11 Math.parseInt(i.toString()); 14 parseInt(i.toString());
12 if (sw.elapsed() > 0) { 15 if (sw.elapsed() > 0) {
13 break; 16 break;
14 } 17 }
15 } 18 }
16 return sw.elapsed() > 0; 19 return sw.elapsed() > 0;
17 } 20 }
18 21
19 static bool checkStopping(Stopwatch sw) { 22 static bool checkStopping(Stopwatch sw) {
20 sw.stop(); 23 sw.stop();
21 int v1 = sw.elapsed(); 24 int v1 = sw.elapsed();
22 Expect.isTrue(v1 > 0); // Expect a non-zero elapsed time. 25 Expect.isTrue(v1 > 0); // Expect a non-zero elapsed time.
23 Stopwatch sw2 = new Stopwatch(); // Used for verification. 26 Stopwatch sw2 = new Stopwatch(); // Used for verification.
24 sw2.start(); 27 sw2.start();
25 int sw2LastElapsed = 0; 28 int sw2LastElapsed = 0;
26 for (int i = 0; i < 100000; i++) { 29 for (int i = 0; i < 100000; i++) {
27 Math.parseInt(i.toString()); 30 parseInt(i.toString());
28 int v2 = sw.elapsed(); 31 int v2 = sw.elapsed();
29 if (v1 != v2) { 32 if (v1 != v2) {
30 return false; 33 return false;
31 } 34 }
32 // If sw2 elapsed twice then sw must have advanced too if it wasn't 35 // If sw2 elapsed twice then sw must have advanced too if it wasn't
33 // stopped. 36 // stopped.
34 if (sw2LastElapsed > 0 && sw2.elapsed() > sw2LastElapsed) { 37 if (sw2LastElapsed > 0 && sw2.elapsed() > sw2LastElapsed) {
35 break; 38 break;
36 } 39 }
37 sw2LastElapsed = sw2.elapsed(); 40 sw2LastElapsed = sw2.elapsed();
38 } 41 }
39 // The test only makes sense if measureable time elapsed and elapsed time 42 // The test only makes sense if measureable time elapsed and elapsed time
40 // on the stopped Stopwatch did not increase. 43 // on the stopped Stopwatch did not increase.
41 Expect.isTrue(sw2.elapsed() > 0); 44 Expect.isTrue(sw2.elapsed() > 0);
42 return true; 45 return true;
43 } 46 }
44 47
45 static checkRestart() { 48 static checkRestart() {
46 Stopwatch sw = new Stopwatch(); 49 Stopwatch sw = new Stopwatch();
47 sw.start(); 50 sw.start();
48 for (int i = 0; i < 100000; i++) { 51 for (int i = 0; i < 100000; i++) {
49 Math.parseInt(i.toString()); 52 parseInt(i.toString());
50 if (sw.elapsed() > 0) { 53 if (sw.elapsed() > 0) {
51 break; 54 break;
52 } 55 }
53 } 56 }
54 sw.stop(); 57 sw.stop();
55 int initial = sw.elapsed(); 58 int initial = sw.elapsed();
56 sw.start(); 59 sw.start();
57 for (int i = 0; i < 100000; i++) { 60 for (int i = 0; i < 100000; i++) {
58 Math.parseInt(i.toString()); 61 parseInt(i.toString());
59 if (sw.elapsed() > initial) { 62 if (sw.elapsed() > initial) {
60 break; 63 break;
61 } 64 }
62 } 65 }
63 sw.stop(); 66 sw.stop();
64 Expect.isTrue(sw.elapsed() > initial); 67 Expect.isTrue(sw.elapsed() > initial);
65 } 68 }
66 69
67 static checkReset() { 70 static checkReset() {
68 Stopwatch sw = new Stopwatch(); 71 Stopwatch sw = new Stopwatch();
69 sw.start(); 72 sw.start();
70 for (int i = 0; i < 100000; i++) { 73 for (int i = 0; i < 100000; i++) {
71 Math.parseInt(i.toString()); 74 parseInt(i.toString());
72 if (sw.elapsed() > 0) { 75 if (sw.elapsed() > 0) {
73 break; 76 break;
74 } 77 }
75 } 78 }
76 sw.stop(); 79 sw.stop();
77 sw.reset(); 80 sw.reset();
78 Expect.equals(0, sw.elapsed()); 81 Expect.equals(0, sw.elapsed());
79 sw.start(); 82 sw.start();
80 for (int i = 0; i < 100000; i++) { 83 for (int i = 0; i < 100000; i++) {
81 Math.parseInt(i.toString()); 84 parseInt(i.toString());
82 if (sw.elapsed() > 0) { 85 if (sw.elapsed() > 0) {
83 break; 86 break;
84 } 87 }
85 } 88 }
86 sw.reset(); 89 sw.reset();
87 for (int i = 0; i < 100000; i++) { 90 for (int i = 0; i < 100000; i++) {
88 Math.parseInt(i.toString()); 91 parseInt(i.toString());
89 if (sw.elapsed() > 0) { 92 if (sw.elapsed() > 0) {
90 break; 93 break;
91 } 94 }
92 } 95 }
93 sw.stop(); 96 sw.stop();
94 Expect.isTrue(sw.elapsed() > 0); 97 Expect.isTrue(sw.elapsed() > 0);
95 } 98 }
96 99
97 static testMain() { 100 static testMain() {
98 Stopwatch sw = new Stopwatch(); 101 Stopwatch sw = new Stopwatch();
99 Expect.isTrue(checkTicking(sw)); 102 Expect.isTrue(checkTicking(sw));
100 Expect.isTrue(checkStopping(sw)); 103 Expect.isTrue(checkStopping(sw));
101 checkRestart(); 104 checkRestart();
102 checkReset(); 105 checkReset();
103 } 106 }
104 } 107 }
105 108
106 main() { 109 main() {
107 StopwatchTest.testMain(); 110 StopwatchTest.testMain();
108 } 111 }
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