image-decode-image-document.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:
- /html/semantics/embedded-content/the-img-element/decode/image-decode-image-document.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>HTMLImageElement.prototype.decode(), image document tests.</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>

<iframe id="frame_imgdoc" src="about:blank"></iframe>

<script>

"use strict";

promise_test(function() {

  return new Promise(function(resolve) {

    var frame = document.getElementById("frame_imgdoc");

    // Load an image in the iframe and then replace that.

    frame.src = "/images/red.png";

    frame.onload = function() {

      let img = frame.contentDocument.body.firstElementChild;

      img.src = "/images/green.png";

      img.decode().then(function() {

        resolve();

});

};

});

}, document.title + " Decode from iframe with image document, succeeds (img not loaded)");

</script>