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<!DOCTYPE html>
<meta charset="utf-8">
<title>"handleEvent" property of EventHandler should be ignored</title>
<link rel="help" href="https://html.spec.whatwg.org/#eventhandler">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
"use strict";
test(t => {
const handler = Object.create(null, {
handleEvent: {
get: t.unreached_func('"handleEvent" property should not be looked up'),
},
});
const el = document.createElement("div");
el.onmouseenter = handler;
el.dispatchEvent(new MouseEvent("mouseenter"));
}, 'plain object "mouseenter" handler');
async_test(t => {
const handler = Object.create(Function.prototype, {
handleEvent: {
get: t.unreached_func('"handleEvent" property should not be looked up'),
},
});
assert_true(handler instanceof Function);
window.onmessage = handler;
window.postMessage({}, "*");
step_timeout(() => {
t.done();
}, 50);
}, 'non-callable "message" handler that is instance of Function');
</script>
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