third_party/WebKit/LayoutTests/imported/web-platform-tests/hr-time/monotonic-clock.html - Issue 1984023002: Move web-platform-tests to wpt (part 1 of 2)

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Issue 1984023002: Move web-platform-tests to wpt (part 1 of 2) (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Created 4 years, 7 months ago

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1 <!DOCTYPE html>

2 <html>

3 <head>

4 <meta charset="utf-8" />

5 <title>window.performance.now() chronology</title>

6 <link rel="author" title="W3C" href="http://www.w3.org/" />

7 <link rel="help" href="http://www.w3.org/TR/hr-time/#sec-monotonic-clock"/>

8 <script src="../../../resources/testharness.js"></script>

9 <script src="../../../resources/testharnessreport.js"></script>

10 <script>

11 test(function() {

12 assert_true(window.performance.now() > 0, "window.performance.now() returns po sitive numbers");

13 }, "window.performance.now() returns a positive number", {assert: "The time valu es returned when calling the now method MUST be monotonically increasing and not subject to system clock adjustments or system clock skew."});

14

15 test(function() {

16 var now1 = window.performance.now();

17 var now2 = window.performance.now();

18 assert_true((now2-now1) >= 0, "window.performance.now() difference is not ne gative");

19 },

20 "window.performance.now() difference is not negative",

21 {

22 assert: "The difference between any two chronologically recorded time values returned from the now method MUST never be negative."

23 }

24 );

25

26 </script>

27 </head>

28 <body>

29 <h1>Description</h1>

30 <p>This test validates that window.performance.now() follows the monotonic clock requirements.</p>

31

32 <div id="log"></div>

33

34 </body>

35 </html>

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