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46 lines
1.5 KiB
HTML
46 lines
1.5 KiB
HTML
<!DOCTYPE html>
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<head>
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<title>Performance Paint Timing Test</title>
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</head>
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<body>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<div id="main"></div>
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<script>
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async_test(function(t) {
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t.step(function() {
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const bufferedEntries = performance.getEntriesByType('paint');
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assert_equals(bufferedEntries.length, 0, "No paint entries yet");
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});
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const div = document.createElement("div");
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div.style.width = "100px";
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div.style.height = "100px";
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div.style.backgroundColor = "red";
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div.style.color = "blue";
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div.innerHTML = "test"
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document.getElementById("main").appendChild(div);
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function testPaintEntries() {
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const bufferedEntries = performance.getEntriesByType('paint');
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if (bufferedEntries.length < 2) {
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t.step_timeout(function() {
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testPaintEntries();
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}, 20);
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return;
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}
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t.step(function() {
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assert_equals(bufferedEntries.length, 2, "FP and FCP.");
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assert_equals(bufferedEntries[0].entryType, "paint");
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assert_equals(bufferedEntries[0].name, "first-paint");
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assert_equals(bufferedEntries[1].entryType, "paint");
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assert_equals(bufferedEntries[1].name, "first-contentful-paint");
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t.done();
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});
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}
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t.step(function() {
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testPaintEntries();
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});
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}, "Basic test to check existence of FP and FCP.");
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</script>
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</body>
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</html>
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