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<!DOCTYPE html>
<meta charset="utf-8">
<title>Traversal after a same-document navigations</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<!--
These tests are kind of silly since it's hard to imagine any other result:
same-document navigations are always synchronous so of course back() won't
cancel them.
Nevertheless they're nice as a basis from which to write corresponding app
history tests, where the consequences aren't as obvious.
-->
<body>
<script type="module">
import { createIframe, waitForLoad, delay } 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.search = "?2";
await waitForLoad(iframe);
await delay(t, 0);
iframe.contentWindow.location.hash = "#3";
iframe.contentWindow.history.go(-2);
assert_equals(iframe.contentWindow.location.search, "?2", "must not go back synchronously (search)");
assert_equals(iframe.contentWindow.location.hash, "#3", "must not go back synchronously (hash)");
await waitForLoad(iframe);
assert_equals(iframe.contentWindow.location.search, "?1", "must go back eventually (search)");
assert_equals(iframe.contentWindow.location.hash, "", "must go back eventually (hash)");
}, "fragment navigation then go(-2)");
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.history.pushState(null, "", "/3");
iframe.contentWindow.history.go(-2);
assert_equals(iframe.contentWindow.location.search, "", "must not go back synchronously (search)");
assert_equals(iframe.contentWindow.location.pathname, "/3", "must not go back synchronously (pathname)");
await waitForLoad(iframe);
assert_equals(iframe.contentWindow.location.search, "?1", "must go back eventually (search)");
assert_equals(iframe.contentWindow.location.pathname, "/common/blank.html", "must go back eventually (pathname)");
}, "pushState then go(-2)");
</script>
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