test_reframe_image_loading.html

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<!doctype html>

<meta charset="utf-8">

<title>

  Test for bug 1395964: We don't reframe for image loading state changes.

</title>

<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">

<script src="/tests/SimpleTest/SimpleTest.js"></script>

<img id="content" src="support/1x1-transparent.png"></div>

<script>

SimpleTest.waitForExplicitFinish();

const utils = SpecialPowers.getDOMWindowUtils(window);

const content = document.getElementById("content");

onload = function() {

  content.offsetTop;

  const previousConstructCount = utils.framesConstructed;

  content.addEventListener("load", function() {

    content.offsetTop;

    is(previousConstructCount, utils.framesConstructed,

       "We should not have reframed");

    SimpleTest.finish();

});

  content.src = "support/blue-100x100.png";

</script>