third_party/WebKit/LayoutTests/fast/events/hr-timestamp/safe-resolution.html - Issue 1352523002: Use high precision timestamp for Event.timestamp

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Issue 1352523002: Use high precision timestamp for Event.timestamp (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: rebase Created 5 years, 2 months ago

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	1 <!DOCTYPE html>

	2

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

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

	5 <script type="text/javascript">

	6 'use strict';

	7

	8 test(function() {

	9 let e1 = new MouseEvent('test1');

	10 let e2 = new MouseEvent('test2');

	11

	12 while (e1.timeStamp == e2.timeStamp)

	13 e2 = new MouseEvent('test2');

	14

	15 let expectedResolutionMilliseconds = 0.005;

	16 let integerMultipleOfResolution = (e2.timeStamp - e1.timeStamp) / expectedRe solutionMilliseconds;

	17 let shouldBeNearZeroOrOne = integerMultipleOfResolution % 1;

	18 assert_true(shouldBeNearZeroOrOne < 1e-10 \|\| Math.abs(shouldBeNearZeroOrOne - 1) < 1e-10);

	19 }, 'Event timestamp should not have a resolution better that 5 microseconds');

	20 </script>

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