navigate-destination-getState-back-forward.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /navigation-api/navigate-event/navigate-destination-getState-back-forward.html - WPT Dashboard Interop Dashboard

<!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(() => {

    let navState = { statevar: "state" };

    navigation.navigate("#foo", { history: "replace", state: navState });

    let target_key = navigation.currentEntry.key;

    let target_id = navigation.currentEntry.id;

    navigation.navigate("#bar");

    navigation.onnavigate = t.step_func_done(e => {

      assert_equals(e.navigationType, "traverse");

      assert_not_equals(e.destination, null);

      assert_not_equals(e.destination.getState(), undefined);

      assert_not_equals(e.destination.getState(), e.destination.getState());

      assert_equals(e.destination.key, "");

      assert_equals(e.destination.id, "");

      assert_equals(e.destination.index, -1);

      assert_equals(e.sourceElement, null);

});

    navigation.back();

  }), 0);

}, "navigate event destination.getState() on back/forward navigation");

</script>