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<!DOCTYPE html>
<meta charset="utf-8">
<title>Popstate/hashchange/load event ordering</title>
<script>
// Set these up super-early before we hit the network for the test harness, just in case.
window.eventOrder = [];
window.onhashchange = () => window.eventOrder.push("hashchange");
window.onpopstate = () => window.eventOrder.push("popstate");
window.onload = () => window.eventOrder.push("load");
</script>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
async_test(t => {
assert_array_equals(window.eventOrder, []);
// 0 timeout is necessary because if we do location.hash assignment before load is finished firing it counts as a replacement.
window.addEventListener("load", () => t.step_timeout(() => {
assert_array_equals(window.eventOrder, ["load"]);
window.addEventListener("hashchange", t.step_func(() => {
assert_array_equals(window.eventOrder, ["load", "popstate", "hashchange"]);
window.addEventListener("hashchange", t.step_func_done(() => {
assert_array_equals(window.eventOrder, ["load", "popstate", "hashchange", "popstate", "hashchange"]);
}));
}), { once: true });
location.hash = "#1";
assert_array_equals(window.eventOrder, ["load", "popstate"]);
history.back();
assert_array_equals(window.eventOrder, ["load", "popstate"]);
}, 0));
}, "when traversing back, before hashchange");
</script>
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