<!DOCTYPEHTML>
<html>
<head>
<meta charset="utf-8">
<title>Test back/forward after pushState</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
<script>
SimpleTest.waitForExplicitFinish();
SimpleTest.requestFlakyTimeout("Need to wait to make sure an event does not fire");
function waitForEvent(target, event) {
return new Promise(resolve =>
target.addEventListener(event, resolve, { once: true }));
}
async function runTest() {
// Target page needs to be the initial load so that the synchronously
// available window is reused and we can attach popstate listeners.
const win = window.open('file_bug1729662.html');
let timeoutID;
let loadCount = 0;
let bc = new BroadcastChannel("bug1729662");
bc.onmessage = ({ data }) => {
if (data != 'load') return;
if (++loadCount > 1) {
// We should only get one load event in win
clearTimeout(timeoutID);
}
};
// We should only go back and forward once
// The popstate for back will have state == null, see file_bug1729662.html
const state1 = await waitForEvent(win, 'popstate');
is(state1.state, null, 'got expected state for history.back');
const state2 = await waitForEvent(win, 'popstate');
is(state2.state, 1, 'got expected state for history.forward');
// eslint-disable-next-line mozilla/no-arbitrary-setTimeout
const timeout = new Promise(resolve => timeoutID = setTimeout(resolve, 1000, 'timeout'));
const result = await Promise.race([
waitForEvent(win, 'popstate'),
timeout
]);
is(result, 'timeout', 'Got no more popstate');
is(loadCount, isXOrigin ? 0 : 1, 'Got exactly one (zero for xorigin) load events in win');
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