File: delay-load-event-until-move-to-empty-source.html

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<!DOCTYPE html>
<meta charset="utf-8">
<title>Inline image element blocks load until source is changed to empty source</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<img src="/images/blue.png?pipe=trickle(d100)">
<script>

async_test(t => {
  const image = document.querySelector("img");

  assert_false(image.complete, "The image is loading initially");

  // Complete the test as soon as we obtained the window "load" event,
  // which should happen as soon as the image stops loading by moving
  // to an empty source.
  window.addEventListener("load", t.step_func_done(() => {
      assert_true(image.complete, "The image is no longer loading once the window 'load' event is dispatched");
  }));

  // Stop loading the image.
  image.src = "";
}, "Image element delays window's load event until the image changes to empty source");

</script>