third_party/WebKit/LayoutTests/fast/performance/performance-paint-timing-observable.html - Issue 2528513003: first-paint and first-contentful paint

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Side by Side Diff: third_party/WebKit/LayoutTests/fast/performance/performance-paint-timing-observable.html

Issue 2528513003: first-paint and first-contentful paint (Closed)

Patch Set: Got rid of DCHECK cause it breaks unit tests Created 3 years, 11 months ago

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	1 <!DOCTYPE html>

	2 <head>

	3 <title>Performance Paint Timing Test</title>

	4 </head>

	5 <body>

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

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

	8 <script>

	9

	10 async_test(function (t) {

	11 var observer = new PerformanceObserver(

	12 t.step_func(function (entryList) {

	13 var entries = entryList.getEntries();

	14 assert_equals(entries.length, 2,

	15 "There should be two paint timing instances.");

	16 assert_equals(entries[0].entryType, "paint",

	17 "Expected entryType to be: paint.");

	18 assert_equals(entries[0].duration, 0,

	19 "Expected duration to be: 0.");

	20

	21 assert_equals(entries[1].entryType, "paint",

	22 "Expected entryType to be: paint.");

	23 assert_equals(entries[1].duration, 0,

	24 "Expected duration to be: 0.");

	25 observer.disconnect();

	26 t.done();

	27 })

	28 );

	29 observer.observe({entryTypes: ["paint"]});

	30

	31 }, "Both first-paint-timing and first-contentful-paint timing entry are obse rvable.");

	32

	33 </script>

	34 <div style="background-color:black;color:white;padding:20px;">...test...</di v>

	35 </body>

	36 </html>

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