updated xunit tests to refect use of getSerializedXML

@@ -159,6 +159,7 @@ XUnitExporter.prototype.getXML = function getXML() {
  * @return string
  */
 XUnitExporter.prototype.getSerializedXML = function getSerializedXML(xml) {
+    "use strict";
     var serializer = new XMLSerializer();
     return '<?xml version="1.0" encoding="UTF-8"?>' + serializer.serializeToString(this.getXML());
 }

@@ -7,7 +7,7 @@ casper.test.begin('XUnitReporter() initialization', 1, function suite(test) {
     var xunit = require('xunit').create();
     var results = new tester.TestSuiteResult();
     xunit.setResults(results);
-    test.assertTruthy(xunit.getXML());
+    test.assertTruthy(xunit.getSerializedXML());
     test.done();
 });
 
@@ -25,7 +25,7 @@ casper.test.begin('XUnitReporter() can hold test suites', 4, function suite(test
     });
     results.push(suite2);
     xunit.setResults(results);
-    casper.start().setContent(xunit.getXML());
+    casper.start().setContent(xunit.getSerializedXML());
     test.assertEvalEquals(function() {
         return __utils__.findAll('testsuite').length;
     }, 2);
@@ -50,7 +50,7 @@ casper.test.begin('XUnitReporter() can hold a suite with a succesful test', 1, f
     });
     results.push(suite1);
     xunit.setResults(results);
-    casper.start().setContent(xunit.getXML());
+    casper.start().setContent(xunit.getSerializedXML());
     test.assertExists('testsuite[name="foo"][package="foo"][tests="1"][failures="0"] testcase[name="footext"]');
     test.done();
 });
@@ -70,7 +70,7 @@ casper.test.begin('XUnitReporter() can handle a failed test', 2, function suite(
     });
     results.push(suite1);
     xunit.setResults(results);
-    casper.start().setContent(xunit.getXML());
+    casper.start().setContent(xunit.getSerializedXML());
     test.assertExists('testsuite[name="foo"][package="foo"][tests="1"][failures="1"] testcase[name="footext"] failure[type="footype"]');
     test.assertEquals(casper.getElementInfo('failure[type="footype"]').text, 'footext');
     test.done();