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<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
async_test(t => {
  // Wait for after the load event so that the navigation doesn't get converted
  // into a replace navigation.
  window.onload = () => t.step_timeout(t.step_func_done(async () => {
    let start_history_length = history.length;
    let key1 = navigation.currentEntry.key;
    await navigation.navigate("#1").committed;
    let key2 = navigation.currentEntry.key;
    assert_not_equals(key1, key2);
    await navigation.navigate("#2", { history: "replace" }).committed;
    let key3 = navigation.currentEntry.key;
    assert_equals(key2, key3);
    assert_equals(navigation.entries().length, 2);
    assert_equals(history.length, start_history_length + 1);
  }), 0);
}, "navigate() with history: 'replace' option");
</script>