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<!DOCTYPE html>
<meta charset="utf-8">
<title>Same-document traversals during cross-document traversals</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<!--
This case is not significantly different from
cross-document-traversal-cross-document-traversal.html.
-->
<body>
<script type="module">
import { createIframe, waitForLoad, waitForHashchange, delay, waitForPotentialNetworkLoads } from "./resources/helpers.mjs";
promise_test(async t => {
const iframe = await createIframe(t);
// Setup
// Extra delay()s are necessary because if we navigate "inside" the load
// handler (i.e. in a promise reaction for the load handler) then it will
// be a replace navigation.
iframe.contentWindow.location.search = "?1";
await waitForLoad(iframe);
await delay(t, 0);
iframe.contentWindow.location.hash = "#2";
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.location.search = "?3";
await waitForLoad(iframe);
await delay(t, 0);
iframe.contentWindow.history.back();
assert_equals(iframe.contentWindow.location.search, "?3", "must not go back synchronously 1 (search)");
assert_equals(iframe.contentWindow.location.hash, "#2", "must not go back synchronously 1 (hash)");
iframe.contentWindow.history.back();
assert_equals(iframe.contentWindow.location.search, "?3", "must not go back synchronously 2 (search)");
assert_equals(iframe.contentWindow.location.hash, "#2", "must not go back synchronously 2 (hash)");
await waitForLoad(iframe);
assert_equals(iframe.contentWindow.location.search, "?1", "first load event must be going back (search)");
assert_equals(iframe.contentWindow.location.hash, "", "first load event must be going back (hash)");
iframe.contentWindow.onhashchange = t.unreached_func("hashchange event");
iframe.onload = t.unreached_func("second load event");
await waitForPotentialNetworkLoads(t);
assert_equals(iframe.contentWindow.location.search, "?1", "must stay on ?1 (search)");
assert_equals(iframe.contentWindow.location.hash, "", "must stay on ?1 (hash)");
}, "traversals in the same (back) direction: coalesced");
promise_test(async t => {
const iframe = await createIframe(t);
// Setup
// Extra delay()s are necessary because if we navigate "inside" the load
// handler (i.e. in a promise reaction for the load handler) then it will
// be a replace navigation.
iframe.contentWindow.location.search = "?1";
await waitForLoad(iframe);
await delay(t, 0);
iframe.contentWindow.location.search = "?2";
await waitForLoad(iframe);
await delay(t, 0);
iframe.contentWindow.location.hash = "#3";
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.history.back();
await waitForHashchange(iframe.contentWindow);
assert_equals(iframe.contentWindow.location.hash, "", "we made our way to ?2 for setup");
iframe.contentWindow.history.back();
await waitForLoad(iframe);
await delay(t, 0);
assert_equals(iframe.contentWindow.location.search, "?1", "we made our way to ?1 for setup");
iframe.contentWindow.history.forward();
assert_equals(iframe.contentWindow.location.search, "?1", "must not go forward synchronously 1 (search)");
assert_equals(iframe.contentWindow.location.hash, "", "must not go forward synchronously 1 (hash)");
iframe.contentWindow.history.forward();
assert_equals(iframe.contentWindow.location.search, "?1", "must not go forward synchronously 2 (search)");
assert_equals(iframe.contentWindow.location.hash, "", "must not go forward synchronously 2 (hash)");
await waitForLoad(iframe);
assert_equals(iframe.contentWindow.location.search, "?2", "first load event must be going forward (search)");
assert_equals(iframe.contentWindow.location.hash, "#3", "first load event must be going forward (hash)");
iframe.contentWindow.onhashchange = t.unreached_func("hashchange event");
iframe.onload = t.unreached_func("second load event");
await waitForPotentialNetworkLoads(t);
assert_equals(iframe.contentWindow.location.search, "?2", "must stay on ?2");
assert_equals(iframe.contentWindow.location.hash, "#3", "must stay on ?2");
}, "traversals in the same (forward) direction: coalesced");
</script>
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