observe-svg-image.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:
- /element-timing/observe-svg-image.html - WPT Dashboard Interop Dashboard

<!DOCTYPE HTML>

<meta charset=utf-8>

<title>Element Timing: observe image inside SVG</title>

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

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

<script src="resources/element-timing-helpers.js"></script>

<script>

let beforeRender;

async_test(function (t) {

  assert_implements(window.PerformanceElementTiming, "PerformanceElementTiming is not implemented");

  const observer = new PerformanceObserver(

    t.step_func_done(function(entryList) {

      assert_equals(entryList.getEntries().length, 1);

      const entry = entryList.getEntries()[0];

      const pathname = window.location.origin + '/element-timing/resources/circle.svg';

      checkElement(entry, pathname, 'my_svg', 'svg_id', beforeRender,

          document.getElementById('svg_id'));

      // Assume viewport has size at least 200, so the element is fully visible.

      checkRect(entry, [0, 200, 0, 200]);

      checkNaturalSize(entry, 200, 200);

})

);

  observer.observe({entryTypes: ['element']});

  beforeRender = performance.now();

}, "Able to observe svg image.");

</script>

<style>

body {

  margin: 0;

</style>

<svg width="300" height="300">

  <image href='resources/circle.svg' elementtiming='my_svg' id='svg_id'/>

</svg>