tests/corelib_strong/stopwatch_test.dart - Issue 2989473002: Migrated test block 27 to Dart 2.0.

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Issue 2989473002: Migrated test block 27 to Dart 2.0. (Closed)

Patch Set: Addressed Bob's nits and fixed test failures Created 3 years, 4 months ago

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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

3 // BSD-style license that can be found in the LICENSE file.

4

5 // Dart test program for testing stopwatch support.

6

7 library stopwatch_test;

8

9 import "package:expect/expect.dart";

10

11 class StopwatchTest {

12 static bool checkTicking(Stopwatch sw) {

13 Expect.isFalse(sw.isRunning);

14 sw.start();

15 Expect.isTrue(sw.isRunning);

16 for (int i = 0; i < 1000000; i++) {

17 int.parse(i.toString());

18 if (sw.elapsedTicks > 0) {

19 break;

20 }

21 }

22 return sw.elapsedTicks > 0;

23 }

24

25 static bool checkStopping(Stopwatch sw) {

26 sw.stop();

27 Expect.isFalse(sw.isRunning);

28 int v1 = sw.elapsedTicks;

29 Expect.isTrue(v1 > 0); // Expect a non-zero elapsed time.

30 Stopwatch sw2 = new Stopwatch(); // Used for verification.

31 sw2.start();

32 Expect.isTrue(sw2.isRunning);

33 int sw2LastElapsed = 0;

34 for (int i = 0; i < 100000; i++) {

35 int.parse(i.toString());

36 int v2 = sw.elapsedTicks;

37 if (v1 != v2) {

38 return false;

39 }

40 // If sw2 elapsed twice then sw must have advanced too if it wasn't

41 // stopped.

42 if (sw2LastElapsed > 0 && sw2.elapsedTicks > sw2LastElapsed) {

43 break;

44 }

45 sw2LastElapsed = sw2.elapsedTicks;

46 }

47 // The test only makes sense if measureable time elapsed and elapsed time

48 // on the stopped Stopwatch did not increase.

49 Expect.isTrue(sw2.elapsedTicks > 0);

50 return true;

51 }

52

53 static checkRestart() {

54 Stopwatch sw = new Stopwatch();

55 Expect.isFalse(sw.isRunning);

56 sw.start();

57 Expect.isTrue(sw.isRunning);

58 for (int i = 0; i < 100000; i++) {

59 int.parse(i.toString());

60 if (sw.elapsedTicks > 0) {

61 break;

62 }

63 }

64 sw.stop();

65 Expect.isFalse(sw.isRunning);

66 int initial = sw.elapsedTicks;

67 sw.start();

68 Expect.isTrue(sw.isRunning);

69 for (int i = 0; i < 100000; i++) {

70 int.parse(i.toString());

71 if (sw.elapsedTicks > initial) {

72 break;

73 }

74 }

75 sw.stop();

76 Expect.isFalse(sw.isRunning);

77 Expect.isTrue(sw.elapsedTicks > initial);

78 }

79

80 static checkReset() {

81 Stopwatch sw = new Stopwatch();

82 Expect.isFalse(sw.isRunning);

83 sw.start();

84 Expect.isTrue(sw.isRunning);

85 for (int i = 0; i < 100000; i++) {

86 int.parse(i.toString());

87 if (sw.elapsedTicks > 0) {

88 break;

89 }

90 }

91 sw.stop();

92 Expect.isFalse(sw.isRunning);

93 sw.reset();

94 Expect.isFalse(sw.isRunning);

95 Expect.equals(0, sw.elapsedTicks);

96 sw.start();

97 Expect.isTrue(sw.isRunning);

98 for (int i = 0; i < 100000; i++) {

99 int.parse(i.toString());

100 if (sw.elapsedTicks > 0) {

101 break;

102 }

103 }

104 sw.reset();

105 Expect.isTrue(sw.isRunning);

106 for (int i = 0; i < 100000; i++) {

107 int.parse(i.toString());

108 if (sw.elapsedTicks > 0) {

109 break;

110 }

111 }

112 sw.stop();

113 Expect.isFalse(sw.isRunning);

114 Expect.isTrue(sw.elapsedTicks > 0);

115 }

116

117 static testMain() {

118 Stopwatch sw = new Stopwatch();

119 Expect.isTrue(checkTicking(sw));

120 Expect.isTrue(checkStopping(sw));

121 checkRestart();

122 checkReset();

123 }

124 }

125

126 main() {

127 StopwatchTest.testMain();

128 }

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