first-interval-in-the-past-contribute.html

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This WPT test may be referenced by the following Test IDs:
- /svg/animations/first-interval-in-the-past-contribute.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Inserting animation elements that end before current presentation time</title>

<link rel="help" href="https://www.w3.org/TR/2001/REC-smil-animation-20010904/#Timing-BeginEnd-LC-Start">

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

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

<script src="/common/rendering-utils.js"></script>

<svg>

  <rect width="100" height="100" fill="orange">

    <animate attributeName="fill" values="blue;red" dur="10ms" fill="freeze"/>

  </rect>

</svg>

<script>

  promise_test(t => {

    const rect = document.querySelector('rect');

    const endWatcher = new Promise(resolve => {

      document.querySelector('animate').onend = resolve;

});

    return endWatcher

      .then(() => {

        const oldAnimation = rect.firstElementChild;

        const newAnimation = oldAnimation.cloneNode(false);

        newAnimation.setAttribute('values', 'red;green');

        rect.replaceChild(newAnimation, oldAnimation);

        return waitForAtLeastOneFrame();

})

      .then(() => {

        assert_equals(getComputedStyle(rect).fill, 'rgb(0, 128, 0)', 'new animation applies');

});

});

</script>