1 files changed, 16 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/historical-progress-event.window.js b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/historical-progress-event.window.js
new file mode 100644
index 0000000000..7c4e121b7c
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/historical-progress-event.window.js
@@ -0,0 +1,16 @@
+async_test(t => {
+  const img = new Image();
+  t.add_cleanup(() => img.remove());
+  img.onloadstart = img.onprogress = img.onloadend = t.unreached_func("progress event fired");
+  img.onload = t.step_func_done(e => {
+    assert_true(e instanceof Event);
+    assert_false(e instanceof ProgressEvent);
+  });
+  img.src = "/images/rrgg-256x256.png";
+  document.body.append(img);
+}, "<img> does not support ProgressEvent or loadstart/progress/loadend");
+
+test(t => {
+  assert_equals(document.body.onloadend, undefined);
+  assert_equals(window.onloadend, undefined);
+}, "onloadend is not exposed");