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chromium/third_party/blink/web_tests/external/wpt/navigation-api/currententrychange-event/navigation-updateCurrentEntry.html 

<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
test(t => {
  let oncurrententrychange_count = 0;
  navigation.oncurrententrychange = t.step_func(e => {
    oncurrententrychange_count++;
    assert_equals(e.from, navigation.currentEntry);
    assert_equals(e.navigationType, null);
    assert_equals(navigation.currentEntry.getState(), "newState");
  });
  navigation.updateCurrentEntry({ state: "newState" });
  assert_equals(oncurrententrychange_count, 1);

  // "Updating" the state to the current state should still fire currententrychange.
  navigation.updateCurrentEntry({ state: navigation.currentEntry.getState() });
  assert_equals(oncurrententrychange_count, 2);
}, "currententrychange fires for navigation.updateCurrentEntry()");
</script>