1 files changed, 19 insertions, 0 deletions
diff --git a/testing/web-platform/tests/dom/events/event-global-set-before-handleEvent-lookup.window.js b/testing/web-platform/tests/dom/events/event-global-set-before-handleEvent-lookup.window.js
new file mode 100644
index 0000000000..8f934bcea9
--- /dev/null
+++ b/testing/web-platform/tests/dom/events/event-global-set-before-handleEvent-lookup.window.js
@@ -0,0 +1,19 @@
+// https://dom.spec.whatwg.org/#concept-event-listener-inner-invoke (steps 8.2 - 12)
+// https://webidl.spec.whatwg.org/#call-a-user-objects-operation (step 10.1)
+
+test(() => {
+  const eventTarget = new EventTarget;
+
+  let currentEvent;
+  eventTarget.addEventListener("foo", {
+    get handleEvent() {
+      currentEvent = window.event;
+      return () => {};
+    }
+  });
+
+  const event = new Event("foo");
+  eventTarget.dispatchEvent(event);
+
+  assert_equals(currentEvent, event);
+}, "window.event is set before 'handleEvent' lookup");