third_party/WebKit/PerformanceTests/Editing/move-down-with-hidden-elements.html - Issue 2689183003: Convert layout test move-up-down-should-skip-hidden-elements.html to performance test

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Side by Side Diff: third_party/WebKit/PerformanceTests/Editing/move-down-with-hidden-elements.html

Issue 2689183003: Convert layout test move-up-down-should-skip-hidden-elements.html to performance test (Closed)

Patch Set: 2017-02-14T11:22:37 Created 3 years, 10 months ago

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	1 <!doctype html>

	2 <script src="../resources/runner.js"></script>

	3 <div id="sample"></div>

	4 <script>

	5 const kCount = 10;

	6

	7 const metaElements = (() => {

	8 const result = [];

	9 for (let count = 0; count < 100; ++count)
	yoichio 2017/02/14 04:00:20 Amount of 100 <meta>s is O.K. to get better metric Amount of 100 <meta>s is O.K. to get better metrics than 1000 of original?
	10 result.push('<meta>', '</meta>');

	11 return result;

	12 })();

	13 const sample = document.getElementById('sample');

	14 sample.innerHTML = [

	15 '<div hiddent>', ...metaElements, '</div>',

	16 '<h1 id="target">first line of renderered text</h1>',

	17 '<div hiddent>', ...metaElements, '</div>',

	18 ].join('');

	19

	20 const selection = window.getSelection();

	21 const target = document.getElementById('target');

	22

	23 PerfTestRunner.measureRunsPerSecond({

	24 description: 'Measures performance of move-down through non-renderered element s',

	25 run: () => {

	26 selection.collapse(target, 0);

	27 selection.extend(target, target.childNodes.length);

	28 for (let counter = 0; counter < kCount; ++counter)

	29 selection.modify('move', 'forward', 'line');

	30 },

	31 });

	32 </script>

	33 </body>

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