<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
promise_test(async t => {
  navigation.onnavigate = t.step_func(e => {
    assert_throws_dom("InvalidStateError", () => e.commit());
  });
  await navigation.navigate("#").finished;
}, "commit() before intercept()");

promise_test(async t => {
  navigation.onnavigate = t.step_func(e => {
    e.intercept({ handler: t.step_func(() => {
      assert_throws_dom("InvalidStateError", () => e.commit());
    }) });
  });
  await navigation.navigate("#").finished;
}, "commit() without commit behavior specified");

promise_test(async t => {
  navigation.onnavigate = t.step_func(e => {
    e.intercept({
      handler: t.step_func(() => {
        assert_throws_dom("InvalidStateError", () => e.commit());
      }),
      commit: "immediate"
    });
  });
  await navigation.navigate("#").finished;
}, "commit() with { commit: immediate }");

promise_test(async t => {
  navigation.onnavigate = t.step_func(e => {
    e.intercept({ commit: "after-transition" });
    assert_throws_dom("InvalidStateError", () => e.commit());
  });
  await navigation.navigate("#").finished;
}, "commit() during event dispatch");

promise_test(async t => {
  let navigate_event;
  navigation.onnavigate = t.step_func(e => {
    e.intercept({ commit: "after-transition" });
    navigate_event = e;
  });
  await navigation.navigate("#").finished;
  assert_throws_dom("InvalidStateError", () => navigate_event.commit());
}, "commit() after finish");

promise_test(async t => {
  navigation.onnavigate = t.step_func(e => {
    e.intercept({
      handler: t.step_func(() => {
        e.commit();
        assert_throws_dom("InvalidStateError", () => e.commit());
      }),
      commit: "after-transition"
    });
  });
  await navigation.navigate("#").finished;
}, "commit() twice");

promise_test(async t => {
  // We need to grab an NavigationDestination to construct the event.
  navigation.onnavigate = t.step_func(e => {
    const event = new NavigateEvent("navigate", {
      destination: e.destination,
      signal: (new AbortController()).signal
    });

    assert_throws_dom("SecurityError", () => event.commit());
  });
  await navigation.navigate("#").finished;
}, "commit() on synthetic NavigateEvent");

promise_test(async t => {
  let i = document.createElement("iframe");
  i.src = "about:blank";
  document.body.appendChild(i);
  i.contentWindow.navigation.onnavigate = t.step_func(e => {
    e.intercept({
      handler: t.step_func(() => {
        let iframe_constructor = i.contentWindow.DOMException;
        i.remove();
        assert_throws_dom("InvalidStateError", iframe_constructor, () => e.commit());
      }),
      commit: "after-transition"
    });
  });
  i.contentWindow.navigation.navigate("#");
}, "commit() in detached iframe");
</script>
</body>
