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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/utils.js"></script>
<script src="resources/history-length-test-helper.js"></script>
<script src="/common/utils.js"></script>
<title>Test fenced frames can't see outer page history length</title>
<body>
<script>
promise_test(async () => {
const kAssertionDesc = "history.length Should never reflect the length " +
"of joint session history that occured outside " +
"of the fenced frame tree. history.length will " +
"always return 1."
maybeNavigateForHistory();
const fenced_history_length_key = token();
const outer_page_ready_for_next_navigation_key = token();
// Append an iframe to the outer page for subsequent navigations within
// the iframe
const iframe = document.createElement('iframe');
const embed_scope_iframe = "outer_page::iframe";
iframe.src = generateURL("resources/history-length-outer-page-navigation-" +
"not-reflected-in-fenced-inner.html",
[fenced_history_length_key, outer_page_ready_for_next_navigation_key,
embed_scope_iframe, null]);
document.body.append(iframe);
await nextValueFromServer(outer_page_ready_for_next_navigation_key);
// Append a fenced frame to observe 'history.length' and report it back
// to the outer page
const embed_scope_fenced_frame = "outer_page::fenced_frame";
attachFencedFrame(generateURL(
"resources/history-length-outer-page-navigation-" +
"not-reflected-in-fenced-inner.html",
[fenced_history_length_key, outer_page_ready_for_next_navigation_key,
embed_scope_fenced_frame, "outer_page::fenced_frame"])
);
// Wait for the fenced frame to report 'history.length'
let result = await nextValueFromServer(fenced_history_length_key);
assert_equals(result, "PASS > " + " history.length: 1", kAssertionDesc);
}, "history.length should not reflect navigations within outer page in " +
"fenced frame");
</script>
</body>
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