file_null_baseuri.html

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<!DOCTYPE HTML>

<html>

  <head>

    <title>Bug 1121857 - document.baseURI should not get blocked if baseURI is null</title>

  </head>

  <body>

  <script type="text/javascript">

    // check the initial base-uri

    window.parent.postMessage({baseURI: document.baseURI, test: "initial_base_uri"}, "*");

    // append a child and check the base-uri

    var baseTag = document.head.appendChild(document.createElement('base'));

    baseTag.href = 'http://www.base-tag.com';

    window.parent.postMessage({baseURI: document.baseURI, test: "changed_base_uri"}, "*");

    // remove the child and check that the base-uri is back to the initial one

    document.head.remove(baseTag);

    window.parent.postMessage({baseURI: document.baseURI, test: "initial_base_uri"}, "*");

  </script>

</body>

</html>