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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));

  assert_equals(navigation.activation.entry, navigation.currentEntry);
  let activationEntry = navigation.activation.entry;
  history.replaceState("#fragment", "", "");
  assert_not_equals(navigation.activation.entry, navigation.currentEntry);
  assert_equals(navigation.activation.entry, activationEntry);
  assert_equals(navigation.activation.entry.index, -1);
}, "navigation.activation.entry should be orphaned by history.replaceState()");
</script>