content/base/test/test_bug698384.html

<!DOCTYPE HTML>
<html>
  <!--
    https://bugzilla.mozilla.org/show_bug.cgi?id=698384
  -->
  <head>
    <title>Test for Bug 698384</title>
    <script type="text/javascript"
      src="/tests/SimpleTest/SimpleTest.js"></script>
    <script src="/tests/SimpleTest/EventUtils.js"
      type="text/javascript"></script>
    <link rel="stylesheet" type="text/css"
      href="/tests/SimpleTest/test.css" />
  </head>
  <body onload="runTests();">
    <a target="_blank"
      href="https://bugzilla.mozilla.org/show_bug.cgi?id=698384">
      Mozilla Bug 698384</a>
    <p id="display"></p>
    <div id="content" style="display: none"></div>
    <pre id="test">
      <script type="text/javascript">
        /*
          Checks to see if default parameter handling is correct when 0, 1
          or 2 parameters are passed.

          If one is only passed, aFilter should default to null
          If none are passed, aFilter should be null and aWhatToShow should
          be NodeFilter.SHOW_ALL
        */
        SimpleTest.waitForExplicitFinish();

        var content = $('content'),
            ni;

        content.innerHTML = ('<span id="A"><\/span><span id="B"><\/span>'
          + '<span id="C"><\/span>');

        function runTests() {

          // Test NodeIterator when no optional arguments are given
          ni = document.createNodeIterator(content);
          is(ni.whatToShow, NodeFilter.SHOW_ALL, "whatToShow should be " +
            "NodeFilter.SHOW_ALL when both " +
            " optionals are not given");
          is(ni.filter, null, "filter should be defaulted to null when both " +
            " optionals are not given");

          // Test NodeIterator when first optional is passed
          ni = document.createNodeIterator(content, NodeFilter.SHOW_ELEMENT);
          is(ni.filter, null, "filter should be defaulted to null when only " +
            " first argument is passed");
          is(ni.whatToShow, NodeFilter.SHOW_ELEMENT, "whatToShow should " +
            "properly be set to NodeFilter.SHOW_ELEMENT when whatToShow is " +
            "provided and filter is not");

          SimpleTest.finish();
        }
      </script>
    </pre>
  </body>
</html>