Content - 46efb9e2674b141ce854749be565650341ebb966 - c4be20f/paint-timing/first-paint-bg-color.html

visit type:

Tip revision: 86fb98f2c3ec4e05bc529f19e41465da62052c3a authored by Lukasz Anforowicz on 02 April 2018, 23:48:36 UTC
Make CORB MIME type classification consistent with the web specs.

Tip revision: 86fb98f

first-paint-bg-color.html

<!DOCTYPE html>
<head>
<title>Performance Paint Timing Test: FP due to background color</title>
</head>
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="main"></div>
</body>

<footer>
<script>
async_test(function (t) {
    document.body.style.backgroundColor = "#AA0000";

    function testPaintEntries() {
      const bufferedEntries = performance.getEntriesByType('paint');
      if (bufferedEntries.length < 1) {
        t.step_timeout(function() {
          testPaintEntries();
        }, 20);
        return;
      }
      t.step(function() {
        assert_equals(bufferedEntries.length, 1, "FP should fire for background color, not FCP");
        assert_equals(bufferedEntries[0].entryType, "paint");
        assert_equals(bufferedEntries[0].name, "first-paint");
        t.done();
      });
    }
    t.step(function() {
      testPaintEntries();
    })
}, "First paint fires due to background color. No FCP");
</script>
<footer>
</html>

Browse the archive

https://github.com/web-platform-tests/wpt