navigate-child-function-parent-then-fragment.html

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This WPT test may be referenced by the following Test IDs:
- /html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-function-parent-then-fragment.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>

  Set location from a parent, then do a fragment navigation from within the

  frame.

</title>

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

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

<iframe></iframe>

<script>

  promise_test(async test => {

    // Wait for the DOM to be ready before inserting an <iframe> into it.

    await new Promise(resolve => { onload = resolve });

    // Insert an <iframe> and wait for a dummy document to be loaded into it.

    let iframe = document.createElement("iframe");

    iframe.src = "support/dummy.html";

    let iframe_loaded = new Promise(resolve => { iframe.onload = resolve });

    document.body.appendChild(iframe);

    await iframe_loaded;

    // The referrer is the main frame's URL since it initiated the iframe

    // creation.

    assert_equals(iframe.contentDocument.referrer, document.URL);

    // Do a fragment navigation from the frame, which will fire the

    // 'hashchange' function.

    let hash_changed = new Promise(resolve =>  {

      iframe.contentWindow.onhashchange = resolve

});

    let navigateScript = iframe.contentDocument.createElement("script");

    navigateScript.innerHTML = "location.href = '#foo'";

    iframe.contentDocument.body.appendChild(navigateScript);

    await hash_changed;

    // The referrer stays the same, even when the last navigation was

    // initiated by the iframe (instead of the main frame document).

    assert_equals(iframe.contentDocument.referrer, document.URL);

});

</script>