1 files changed, 13 insertions, 4 deletions
diff --git a/testing/web-platform/tests/dom/nodes/insertion-removing-steps/blur-event.window.js b/testing/web-platform/tests/dom/nodes/insertion-removing-steps/blur-event.window.js
index 4c8cd85cbf..fdca02dcda 100644
--- a/testing/web-platform/tests/dom/nodes/insertion-removing-steps/blur-event.window.js
+++ b/testing/web-platform/tests/dom/nodes/insertion-removing-steps/blur-event.window.js
@@ -12,8 +12,17 @@ test(() => {
   const button = document.body.appendChild(document.createElement('button'));
   button.focus();
 
-  let blurCalled = false;
-  button.onblur = e => blurCalled = true;
+  let blur_called = false;
+  let focus_out_called = false;
+  let focus_called = false;
+
+  button.onblur = () => { blur_called = true; }
+  button.onfocusout = () => { focus_out_called = true; }
+  document.body.addEventListener("focus",
+    () => { focus_called = true; }, {capture: true});
   button.remove();
-  assert_false(blurCalled, "Blur event was not fired");
-}, "<button> element does not fire blur event upon DOM removal");
+
+  assert_false(blur_called, "Blur event was not fired");
+  assert_false(focus_out_called, "FocusOut event was not fired");
+  assert_false(focus_called, "Focus was not fired");
+}, "<button> element does not fire blur/focusout events upon DOM removal");