WebKit export of https://bugs.webkit.org/show_bug.cgi?id=233834 (#31893)
diff --git a/dom/events/event-global.html b/dom/events/event-global.html
index 5cb1b14..3e8d25e 100644
--- a/dom/events/event-global.html
+++ b/dom/events/event-global.html
@@ -5,6 +5,8 @@
<script src="/resources/testharnessreport.js"></script>
<div id=log></div>
<script>
+setup({allow_uncaught_exception: true});
+
test(t => {
assert_own_property(window, "event");
assert_equals(window.event, undefined);
@@ -63,6 +65,30 @@
}, "window.event is undefined if the target is in a shadow tree (event dispatched inside shadow tree)");
async_test(t => {
+ let parent = document.createElement("div");
+ let root = parent.attachShadow({mode: "open"});
+ document.body.append(parent)
+ let span = document.createElement("span");
+ root.append(span);
+ let shadowNode = root.firstElementChild;
+
+ shadowNode.addEventListener("error", t.step_func(e => {
+ assert_not_equals(window.event, e);
+ assert_equals(window.event, undefined);
+ }));
+
+ let windowOnErrorCalled = false;
+ window.onerror = t.step_func_done(() => {
+ windowOnErrorCalled = true;
+ assert_equals(typeof window.event, "object");
+ assert_equals(window.event.type, "error");
+ });
+
+ shadowNode.dispatchEvent(new ErrorEvent("error", {composed: true, bubbles: true}));
+ assert_true(windowOnErrorCalled);
+}, "window.event is undefined inside window.onerror if the target is in a shadow tree (ErrorEvent dispatched inside shadow tree)");
+
+async_test(t => {
let target1 = document.createElement("div");
let target2 = document.createElement("div");
