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<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe id="i" src="/common/blank.html"></iframe>
<script>
promise_test(async t => {
// Wait for after the load event so that the navigation doesn't get converted
// into a replace navigation.
await new Promise(resolve => window.onload = () => t.step_timeout(resolve, 0));
let target_key = i.contentWindow.navigation.currentEntry.key;
let target_id = i.contentWindow.navigation.currentEntry.id;
await i.contentWindow.navigation.navigate("#").finished;
assert_true(i.contentWindow.navigation.canGoBack);
i.contentWindow.navigation.onnavigate = e => {
assert_equals(e.navigationType, "traverse");
assert_false(e.cancelable, "traversals in iframes should never be cancelable");
assert_true(e.canIntercept);
assert_false(e.userInitiated);
assert_true(e.hashChange);
assert_equals(e.downloadRequest, null);
assert_equals(new URL(e.destination.url).hash, "");
assert_true(e.destination.sameDocument);
assert_equals(e.destination.key, target_key);
assert_equals(e.destination.id, target_id);
assert_equals(e.destination.index, 0);
assert_equals(e.formData, null);
assert_equals(e.info, "hi");
// NavigateEvent sourceElement is still in development, so test whether it is available.
if ("sourceElement" in e) assert_equals(e.sourceElement, null);
}
await i.contentWindow.navigation.back({ info: "hi" }).finished;
}, "navigate event for navigation.back() - same-document in an iframe");
</script>
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