image-decode-with-quick-attach-svg.tentative.html

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This WPT test may be referenced by the following Test IDs:
- /html/semantics/embedded-content/the-img-element/decode/image-decode-with-quick-attach-svg.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset=utf-8>

<meta name="timeout" content="long">

<title>SVGImageElement.prototype.decode(), attach to DOM before promise resolves.</title>

<link rel=help href="https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-decode">

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

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

<svg></svg>

<script>

"use strict";

promise_test(function() {

  var img = document.createElementNS('http://www.w3.org/2000/svg', 'image');

  img.setAttributeNS('http://www.w3.org/1999/xlink', 'xlink:href', "/images/green.png");

  const promise = img.decode().then(function(arg) {

    assert_equals(arg, undefined);

});

  // Don't wait for the promise to resolve before attaching the image.

  // The promise should still resolve successfully.

  document.querySelector('svg').appendChild(img);

  return promise;

}, document.title);

</script>