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<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
promise_test(async t => {
let start_length = navigation.entries().length;
// 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));
await navigation.navigate("#foo").committed;
assert_equals(navigation.entries().length, start_length + 1);
navigation.onnavigate = e => e.intercept();
let oncurrententrychange_back_called = false;
let onpopstate_back_called = false;
window.onpopstate = t.step_func(e => {
onpopstate_back_called = true;
assert_true(oncurrententrychange_back_called);
});
navigation.oncurrententrychange = t.step_func(e => {
oncurrententrychange_back_called = true;
assert_false(onpopstate_back_called);
});
let back_result = navigation.back();
assert_false(oncurrententrychange_back_called);
assert_false(onpopstate_back_called);
await back_result.finished;
assert_true(oncurrententrychange_back_called);
assert_true(onpopstate_back_called);
let oncurrententrychange_forward_called = false;
let onpopstate_forward_called = false;
window.onpopstate = t.step_func(e => {
onpopstate_forward_called = true;
assert_true(oncurrententrychange_forward_called);
});
navigation.oncurrententrychange = t.step_func(e => {
oncurrententrychange_forward_called = true;
assert_false(onpopstate_forward_called);
});
let forward_result = navigation.forward();
assert_false(oncurrententrychange_forward_called);
assert_false(onpopstate_forward_called);
await forward_result.finished;
assert_true(oncurrententrychange_back_called);
assert_true(onpopstate_forward_called);
}, "currententrychange fires before popstate for navigation.back() and navigation.forward()");
</script>
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