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navigation-back-forward-same-doc.html
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navigation-back-forward-same-doc.html
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<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<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));
await navigation.navigate("#foo").committed;
assert_equals(navigation.entries().length, 2);
let oncurrententrychange_back_called = false;
let back_committed = false;
navigation.oncurrententrychange = t.step_func(e => {
oncurrententrychange_back_called = true;
assert_equals(e.from, navigation.entries()[1]);
assert_equals(e.navigationType, "traverse");
assert_equals(navigation.currentEntry.index, 0);
assert_false(back_committed);
});
let back_result = navigation.back();
assert_false(oncurrententrychange_back_called);
await back_result.committed.then(() => back_committed = true);
assert_true(oncurrententrychange_back_called);
let oncurrententrychange_forward_called = false;
let forward_committed = false;
navigation.oncurrententrychange = t.step_func(e => {
oncurrententrychange_forward_called = true;
assert_equals(e.from, navigation.entries()[0]);
assert_equals(e.navigationType, "traverse");
assert_equals(navigation.currentEntry.index, 1);
assert_false(forward_committed);
});
let forward_result = navigation.forward();
assert_false(oncurrententrychange_forward_called);
await forward_result.committed.then(() => forward_committed = true);
assert_true(oncurrententrychange_forward_called);
}, "currententrychange fires for same-document navigation.back() and navigation.forward()");
</script>