first-paint-only.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/first-paint-only/first-paint-only.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<head>

<title>Performance Paint Timing Test: FP only</title>

</head>

<body>

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

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

<script src="../resources/utils.js"></script>

<div id="main"></div>

<script>

setup({"hide_test_state": true});

async_test(function (t) {

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

    const div = document.createElement("div");

    div.style.width = "100px";

    div.style.height = "100px";

    div.style.backgroundColor = "red";

    div.style.color = "blue";

    document.getElementById("main").appendChild(div);

    assertFirstPaint(t, 20);

}, "Performance first paint timing entry exists. No first contentful paint.");

</script>

</body>

</html>