reinserting-svg-into-document.html

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This WPT test may be referenced by the following Test IDs:
- /svg/animations/reinserting-svg-into-document.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>Reinserting SVG animation into document should continue the animation</title>

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

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

<svg id="svg">

  <rect id="rect" x="0" y="0" width="20" height="20">

    <animate attributeName="x" begin="0" from="0" to="90" dur="3s" fill="freeze"/>

  </rect>

</svg>

<script>

async_test(t => {

  const svg = document.getElementById('svg');

  // The timeline starts after 'load'.

  window.onload = t.step_func(() => {

    svg.setCurrentTime(1);

    t.step_timeout(() => {

      assert_not_equals(svg.getCurrentTime(), 0, 'started');

      // Removing and re-adding the SVG shouldn't change anything about the

      // underlying animation.

      document.body.removeChild(svg);

      document.body.appendChild(svg);

      // The SVG animation will continue after the next frame runs.

      window.requestAnimationFrame(t.step_func_done(() => {

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

        assert_greater_than_equal(svg.getCurrentTime(), 1);

        assert_greater_than_equal(rect.x.animVal.value, 30);

        svg.setCurrentTime(2);

        assert_approx_equals(rect.x.animVal.value, 60, 1);

      }));

});

});

});

</script>