Blitz - WPT: restart-never-and-begin-click.html

wpt / svg / animations / restart-never-and-begin-click.html
Enable JavaScript in test iframe
/svg/animations/restart-never-and-begin-click.html
<!doctype html>
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<style>

svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100px;
    height: 100px;
}

</style>
<svg>
<rect width="100" height="100" fill="black">
<animate attributeName="opacity" to="0" dur="100ms" begin="click" restart="never">
</rect>
</svg>
<script>

promise_test(async test => {
    const target = document.querySelector("rect");
    const animation = document.querySelector("animate");

    // Wait a frame and click on the element to start the animation.
    await new Promise(requestAnimationFrame);

    // Ensure the animation runs once completely.
    await Promise.all([
        new Promise(resolve => animation.addEventListener("beginEvent", resolve, { once: true })),
        new Promise(resolve => animation.addEventListener("endEvent", resolve, { once: true })),
        test_driver.click(target)
    ]);

    // Wait another frame.
    await new Promise(requestAnimationFrame);

    // Track whether the animation will start again.
    let began = false;
    animation.addEventListener("beginEvent", event => began = true, { once: true });

    // Click on the element, which should not trigger the animation.
    await test_driver.click(target);

    // Wait a couple of frames to give it time to run.
    await new Promise(requestAnimationFrame);
    await new Promise(requestAnimationFrame);

    assert_false(began, "The animation must not restart");
}, "Setting restart='never' prevents animation with begin='click' from restarting");

</script>
</body>