/*
Copyright Â© 2001-2004 World Wide Web Consortium,
(Massachusetts Institute of Technology, European Research Consortium
for Informatics and Mathematics, Keio University). All
Rights Reserved. This work is distributed under the W3CÂ® Software License [1] in the
hope that it will be useful, but WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

[1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
*/

// expose test function names
function exposeTestFunctionNames()
{
return ['XPathExpression_evaluate_documentElement'];
}

var docsLoaded = -1000000;
var builder = null;

//
//   This function is called by the testing framework before
//      running the test suite.
//
//   If there are no configuration exceptions, asynchronous
//        document loading is started.  Otherwise, the status
//        is set to complete and the exception is immediately
//        raised when entering the body of the test.
//
function setUpPage() {
   setUpPageStatus = 'running';
   try {
     //
     //   creates test document builder, may throw exception
     //
     builder = createConfiguredBuilder();

      docsLoaded = 0;

      var docRef = null;
      if (typeof(this.doc) != 'undefined') {
        docRef = this.doc;
      }
      docsLoaded += preload(docRef, "doc", "staffNS");

       if (docsLoaded == 1) {
          setUpPageStatus = 'complete';
       }
    } catch(ex) {
        catchInitializationError(builder, ex);
        setUpPageStatus = 'complete';
    }
}

//
//   This method is called on the completion of
//      each asychronous load started in setUpTests.
//
//   When every synchronous loaded document has completed,
//      the page status is changed which allows the
//      body of the test to be executed.
function loadComplete() {
    if (++docsLoaded == 1) {
        setUpPageStatus = 'complete';
    }
}

/**
*
      Test if XPathExpression.evaluate returns non-null result
      using Document.documentElement as contextNode.

* @author Philippe Le Hégaret
* @author Bob Clary
* @see http://www.w3.org/TR/2003/CR-DOM-Level-3-XPath-20030331/xpath#XPathExpression-evaluate
* @see http://www.w3.org/TR/2003/CR-DOM-Level-3-XPath-20030331/xpath#XPathEvaluator-createExpression
*/
function XPathExpression_evaluate_documentElement() {
   var success;
    if(checkInitialization(builder, "XPathExpression_evaluate_documentElement") != null) return;
    var doc;
      var xpEvaluator;
      var nullNSResolver = null;

      var contextNode;
      var xpathResult;
      var nullResult = null;

      var xpathExpression;
      var expression = "/";

      var docRef = null;
      if (typeof(this.doc) != 'undefined') {
        docRef = this.doc;
      }
      doc = load(docRef, "doc", "staffNS");
      xpEvaluator = createXPathEvaluator(doc);
contextNode = doc.documentElement;

      xpathExpression = xpEvaluator.createExpression(expression,nullNSResolver);
      xpathResult = xpathExpression.evaluate(contextNode,0,nullResult);
      assertNotNull("notnull",xpathResult);

}

function runTest() {
   XPathExpression_evaluate_documentElement();
}