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<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../navigation-methods/return-value/resources/helpers.js"></script>
<body>
<script>
promise_test(async t => {
// Wait for after the load event because window.stop() hangs the test harness
// if called before the load event.
await new Promise(resolve => window.onload = () => t.step_timeout(resolve, 0));
let start_length = navigation.entries().length;
let start_index = navigation.currentEntry.index;
await navigation.navigate("#1").finished;
await navigation.navigate("#2").finished;
assert_equals(navigation.entries().length, start_length + 2);
assert_equals(navigation.currentEntry.index, start_index + 2);
let stopped_first_traverse = false;
navigation.onnavigate = t.step_func(e => {
if (!stopped_first_traverse) {
stopped_first_traverse = true;
t.step_timeout(() => window.stop(), 0);
}
e.intercept({ precommitHandler: () => new Promise(r => t.step_timeout(r, 10)) });
});
let navigatesuccess_called = false;
let navigateerror_called = false;
navigation.onnavigatesuccess = t.step_func(() => {
navigatesuccess_called = true;
assert_equals(location.hash, "#1");
});
navigation.onnavigateerror = t.step_func(() => {
navigateerror_called = true;
assert_equals(location.hash, "#2");
});
await assertBothRejectDOM(t, navigation.back(), "AbortError");
assert_equals(navigation.currentEntry.index, start_index + 2);
assert_equals(location.hash, "#2");
assert_true(navigateerror_called);
assert_false(navigatesuccess_called);
// Ensure navigation.entries() remains in sync with the session history in
// spite of the window.stop(), and navigation.back() does not skip over #1.
await navigation.back().finished;
assert_equals(navigation.currentEntry.index, start_index + 1);
assert_equals(location.hash, "#1");
assert_true(navigatesuccess_called);
}, " precommitHandler traverse with window.stop() before commit");
</script>
</body>
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