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<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/helpers.js"></script>
<script>
promise_test(async t => {
assert_equals(navigation.entries().length, 1);
assert_equals(navigation.entries()[0], navigation.currentEntry);
assert_false(navigation.canGoBack);
assert_false(navigation.canGoForward);
await assertBothRejectDOM(t, navigation.back(), "InvalidStateError");
await assertBothRejectDOM(t, navigation.forward(), "InvalidStateError");
}, "back() and forward() out of bounds");
</script>
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