Revision 83be7773ed3e2df8c2f8625d11ec35358586e48c authored by Anne van Kesteren on 13 March 2018, 17:31:34 UTC, committed by Anne van Kesteren on 13 March 2018, 17:31:34 UTC
See https://github.com/whatwg/html/pull/3562.
1 parent 970fca8
first-contentful-image.html
<!DOCTYPE html>
<head>
<title>Performance Paint Timing Test: FCP due to image</title>
</head>
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="image"></div>
<script>
async_test(function (t) {
const img = document.createElement("IMG");
img.src = "resources/circles.png";
img.onload = function() {
function testPaintEntries() {
const bufferedEntries = performance.getEntriesByType('paint');
if (bufferedEntries.length < 2) {
t.step_timeout(function() {
testPaintEntries();
}, 20);
return;
}
t.step(function() {
assert_equals(bufferedEntries.length, 2, "There should be two paint timing instances.");
assert_equals(bufferedEntries[0].entryType, "paint");
assert_equals(bufferedEntries[0].name, "first-paint");
assert_equals(bufferedEntries[1].entryType, "paint");
assert_equals(bufferedEntries[1].name, "first-contentful-paint");
t.done();
})
}
t.step(function() {
testPaintEntries();
});
};
document.getElementById('image').appendChild(img);
}, "First contentful paint fires due to image render.");
</script>
</body>
</html>
![swh spinner](/static/img/swh-spinner.gif)
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