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<!DOCTYPE html>
<title>Errors thrown in XMLHttpRequest events get to window.onerror</title>
<link rel="author" title="Domenic Denicola" href="mailto:d@domenic.me">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
"use strict";
setup({ allow_uncaught_exception: true });
promise_test(() => {
const error = new Error("oh no!");
let resolve;
window.addEventListener("error", event => {
assert_equals(event.error, error);
resolve();
});
const xhr = new window.XMLHttpRequest();
xhr.addEventListener("load", () => {
throw error;
});
xhr.open("GET", location.href);
xhr.send();
return new Promise(r => {
resolve = r;
});
}, "errors thrown in XMLHttpRequest's load event (using addEventListener) goes to window.onerror");
promise_test(() => {
const error = new Error("oh no 2!");
let resolve;
window.addEventListener("error", event => {
assert_equals(event.error, error);
resolve();
});
const xhr = new window.XMLHttpRequest();
xhr.onload = () => {
throw error;
};
xhr.open("GET", location.href);
xhr.send();
return new Promise(r => {
resolve = r;
});
}, "errors thrown in XMLHttpRequest's load event (using onload) goes to window.onerror");
</script>
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