intercept-and-navigate.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/intercept-and-navigate.html - WPT Dashboard Interop Dashboard

<!doctype html>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script>

promise_test(async t => {

  let start_length = navigation.entries().length;

  let start_index = navigation.currentEntry.index;

  // Wait for after the load event so that the navigation doesn't get converted

  // into a replace navigation.

  await new Promise(r => window.onload = () => t.step_timeout(r, 0));

  await navigation.navigate("#1").finished;

  navigation.onnavigate = e => e.intercept();

  navigation.oncurrententrychange = e => {

    if (e.navigationType == "traverse") {

      assert_equals(location.hash, "");

      assert_equals(navigation.currentEntry.index, start_index);

      assert_equals(navigation.entries().length, start_length + 1);

      navigation.navigate("#2");

};

  let back_result = navigation.back();

  await back_result.committed;

  assert_equals(location.hash, "#2");

  await promise_rejects_dom(t, "AbortError", back_result.finished);

  assert_equals(navigation.currentEntry.index, start_index + 1);

  assert_equals(navigation.entries().length, start_length + 1);

}, "Using intercept() then navigate() in the ensuing currententrychange should abort the finished promise (but not the committed promise)");

</script>