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<!DOCTYPE html>
<meta charset="utf-8">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/utils.js"></script>
<body>
<script>
"use strict";
promise_test(async t => {
// Generating a new one instead of hard-coding makes running manual tests a bit easier.
const windowName = token();
const code = `
window.onload = () => { window.onloadFired = true; };
`;
const startURL = "resources/slow-code-injector.html?pipe=sub(none)&code=" + encodeURIComponent(code);
const absoluteStartURL = (new URL(startURL, location.href)).href;
const afterReplacementURL = "resources/message-opener.html";
const absoluteAfterReplacementURL = (new URL(afterReplacementURL, location.href)).href;
const w = window.open(startURL, windowName);
t.add_cleanup(() => w.close());
// Wait to get past any initial about:blank
while (true) {
if (w.location.href === absoluteStartURL) {
break;
}
await new Promise(r => setTimeout(r, 0));
}
assert_equals(w.onloadFired, undefined, "onload must not yet have fired");
assert_equals(w.history.length, 1, "history.length for the opened window must start at 1");
window.open(afterReplacementURL, windowName);
await new Promise(r => { window.onmessage = r; });
assert_equals(w.history.length, 2, "history.length must increase");
assert_equals(w.location.href, absoluteAfterReplacementURL);
w.history.back();
await new Promise(r => t.step_timeout(r, 1000));
assert_equals(w.location.href, absoluteStartURL, "1 second after attempting to go back, it indeed went back");
}, "No replace before load, triggered by window.open() on a non-_self window");
</script>
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