<!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;
let start_index = navigation.currentEntry.index;
// 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");
assert_equals(navigation.entries().length, start_length + 1);
let oncurrententrychange_called = false;
navigation.oncurrententrychange = t.step_func(e => {
oncurrententrychange_called = true;
assert_equals(e.from, navigation.entries()[start_index + 1]);
assert_equals(e.navigationType, "traverse");
assert_equals(navigation.currentEntry.index, start_index);
});
history.back();
assert_false(oncurrententrychange_called);
await new Promise(resolve => window.onpopstate = resolve);
assert_true(oncurrententrychange_called);
}, "currententrychange fires for history.back()");
</script>