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<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
test(() => {
  assert_throws_js(TypeError, () => {
    new NavigateEvent("navigate");
  });
}, "can't bypass required members by omitting the dictionary entirely");

test(() => {
  assert_throws_js(TypeError, () => {
    new NavigateEvent("navigate", {
      navigationType: "push",
      canIntercept: false,
      userInitiated: false,
      hashChange: false,
      signal: (new AbortController()).signal,
      formData: null,
      downloadRequest: null,
      info: null
    });
  });
}, "destination is required");

async_test(t => {
  // We need to grab an NavigationDestination.
  navigation.onnavigate = t.step_func_done(e => {
    assert_throws_js(TypeError, () => {
      new NavigateEvent("navigate", {
        navigationType: "push",
        destination: e.destination,
        canIntercept: false,
        userInitiated: false,
        hashChange: false,
        formData: null,
        downloadRequest: null,
        info: null
      });
    });
  });
  history.pushState(1, null, "#1");
}, "signal is required");

async_test(t => {
  // We need to grab an NavigationDestination.
  navigation.onnavigate = t.step_func_done(e => {
    const info = { some: "object with identity" };
    const formData = new FormData();
    const signal = (new AbortController()).signal;
    const downloadRequest = "abc";

    const event = new NavigateEvent("navigate", {
      navigationType: "replace",
      destination: e.destination,
      canIntercept: true,
      userInitiated: true,
      hashChange: true,
      signal,
      formData,
      downloadRequest,
      info
    });

    assert_equals(event.navigationType, "replace");
    assert_equals(event.destination, e.destination);
    assert_equals(event.canIntercept, true);
    assert_equals(event.userInitiated, true);
    assert_equals(event.hashChange, true);
    assert_equals(event.signal, signal);
    assert_equals(event.formData, formData);
    assert_equals(event.downloadRequest, downloadRequest);
    assert_equals(event.info, info);
  });
  history.pushState(2, null, "#2");
}, "all properties are reflected back");

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

    assert_equals(event.navigationType, "push");
    assert_equals(event.canIntercept, false);
    assert_equals(event.userInitiated, false);
    assert_equals(event.hashChange, false);
    assert_equals(event.formData, null);
    assert_equals(event.downloadRequest, null);
    assert_equals(event.info, undefined);
  });
  history.pushState(3, null, "#3");
}, "defaults are as expected");
</script>