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| (Empty) |
| 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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Chromium Code Reviews
Issue 1985333002:
Move the hr-time directory from web-platform-tests/ to wpt/. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master