force-reload-image-document.html | Explore in Territory

<!DOCTYPE html>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<script>
var t = async_test("ForceReload should get a new image for an image document");

function triggerReload() {
  // This depends on how image documents are implemented by Blink.
  var iframe = document.getElementById('iframe');
  var img = iframe.contentDocument.body.getElementsByTagName('img')[0];
  var originalWidth = img.width;
  var originalHeight = img.height;

  img.onerror = (message) => {assert_unreached(`onerror called: ${message}`)};
  img.onload = t.step_func_done(function() {
    assert_not_equals(originalWidth, img.width, "Should be reloaded: width");
    assert_not_equals(originalHeight, img.height, "Should be reloaded: height");
  });

  if (window.internals) {
    internals.forceImageReload(img);
  }
}
</script>

<!-- We call triggerReload() strictly after document load event,
because reloading is not enforced until document load event is finished. -->
<body onload="setTimeout(t.step_func(triggerReload), 0)">
<iframe id="iframe" src="../cache/resources/random-cached-image.php?id=force-reload-image-document"></iframe>
</body>

chromium/third_party/blink/web_tests/http/tests/images/force-reload-image-document.html