<!DOCTYPE html>
<meta name="timeout" content="long">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/dispatcher/dispatcher.js"></script>
<script src="/common/utils.js"></script>
<script src="../resources/utils.js"></script>
<script src="resources/utils.sub.js"></script>

<meta name="variant" content="?cross-site">
<meta name="variant" content="?same-site">

<script>
  setup(() => assertSpeculationRulesIsSupported());

  // In https://html.spec.whatwg.org/multipage/browsing-the-web.html#navigate,
  // `sourceDocument` (instead of `navigable`'s active document) should be
  // used as the referring document for prefetch.
  promise_test(async t => {
    const win = await spawnWindow(t, { protocol: 'https' });

    const hostname =
      location.search === '?cross-site' ? '{{hosts[alt][www]}}' : undefined;
    const nextUrl = win.getExecutorURL({ protocol: 'https', hostname, page: 2 });

    await win.forceSinglePrefetch(nextUrl);

    // sourceDocument == `win`'s Document == active document of window being
    // navigated.
    await win.execute_script((url) => {
      window.executor.suspend(() => {
        const a = document.createElement('a');
        a.setAttribute('href', url);
        document.body.appendChild(a);
        a.click();
      });
    }, [nextUrl]);

    assert_equals(
        await win.execute_script(() => location.href),
        nextUrl.toString(),
        "expected navigation to reach destination URL");

    assert_prefetched(await win.getRequestHeaders());
  }, `<a>`);

  promise_test(async t => {
    const win = await spawnWindow(t, { protocol: 'https' });

    const hostname =
      location.search === '?cross-site' ? '{{hosts[alt][www]}}' : undefined;
    const nextUrl = win.getExecutorURL({ protocol: 'https', hostname, page: 2 });

    await win.forceSinglePrefetch(nextUrl);

    // sourceDocument == `win`'s Document != active document of window being
    // navigated, since the window being navigated is a new window.
    await win.execute_script((url) => {
      window.executor.suspend(() => {
        const a = document.createElement('a');
        a.setAttribute('href', url);
        a.setAttribute('target', '_blank');
        document.body.appendChild(a);
        a.click();
      });
    }, [nextUrl]);

    // Below, the scripts given to `win.execute_script()` are executed on the
    // `nextUrl` page in the new window, because `window.executor.suspend()`
    // above made `win`'s original page stop processing `execute_script()`,
    // while the new page of `nextUrl` in the new window starts processing
    // `execute_script()` for the same ID.
    assert_equals(
        await win.execute_script(() => location.href),
        nextUrl.toString(),
        "expected navigation to reach destination URL");

    assert_prefetched(await win.getRequestHeaders());
  }, `<a target="blank">`);
</script>
