first-paint-bg-color.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /paint-timing/with-first-paint/first-paint-bg-color.html - WPT Dashboard Interop Dashboard

<!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>

setup({"hide_test_state": true});

async_test(function (t) {

    assert_implements(window.PerformancePaintTiming, "Paint Timing isn't supported.");

    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>