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diff --git a/tests/auto/qscriptjstestsuite/tests/ecma_3/Expressions/11.9.6-1.js b/tests/auto/qscriptjstestsuite/tests/ecma_3/Expressions/11.9.6-1.js
new file mode 100644
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@@ -0,0 +1,213 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is JavaScript Engine testing utilities.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corp.
+ * Portions created by the Initial Developer are Copyright (C) 2002
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   pschwartau@netscape.com
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/*
+ *
+ * Date:    20 Feb 2002
+ * SUMMARY: Testing the comparison |undefined === null|
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=126722
+ *
+ */
+//-----------------------------------------------------------------------------
+var gTestfile = '11.9.6-1.js';
+var UBound = 0;
+var BUGNUMBER = 126722;
+var summary = 'Testing the comparison |undefined === null|';
+var status = '';
+var statusitems = [];
+var actual = '';
+var actualvalues = [];
+var expect= '';
+var expectedvalues = [];
+
+
+status = inSection(1);
+if (undefined === null)
+  actual = true;
+else
+  actual = false;
+expect = false;
+addThis();
+
+
+
+status = inSection(2);
+switch(true)
+{
+case (undefined === null) :
+  actual = true;
+  break;
+
+default:
+  actual = false;
+}
+expect = false;
+addThis();
+
+
+
+status = inSection(3);
+function f3(x)
+{
+  var res = false;
+
+  switch(true)
+  {
+  case (x === null) :
+    res = true;
+    break;
+
+  default:
+    // do nothing
+  }
+
+  return res;
+}
+
+actual = f3(undefined);
+expect = false;
+addThis();
+
+
+
+status = inSection(4);
+function f4(arr)
+{
+  var elt = '';
+  var res = false;
+
+  for (i=0; i<arr.length; i++)
+  {
+    elt = arr[i];
+
+    switch(true)
+    {
+    case (elt === null) :
+      res = true;
+      break;
+
+    default:
+      // do nothing
+    }
+  }
+
+  return res;
+}
+
+var arr = Array('a', undefined);
+actual = f4(arr);
+expect = false;
+addThis();
+
+
+
+status = inSection(5);
+function f5(arr)
+{
+  var len = arr.length;
+
+  for(var i=0; (arr[i]===undefined) && (i<len); i++)
+    ; //do nothing
+ 
+  return i;
+}
+
+/*
+ * An array of 5 undefined elements. Note:
+ *
+ * The return value of eval(a STATEMENT) is undefined.
+ * A non-existent PROPERTY is undefined, not a ReferenceError.
+ * No undefined element exists AFTER trailing comma at end.
+ *
+ */
+var arrUndef = [ , undefined, eval('var x = 0'), this.NOT_A_PROPERTY, , ];
+actual = f5(arrUndef);
+expect = 5;
+addThis();
+
+
+
+status = inSection(6);
+function f6(arr)
+{
+  var len = arr.length;
+
+  for(var i=0; (arr[i]===null) && (i<len); i++)
+    ; //do nothing
+
+  return i;
+}
+
+/*
+ * Use same array as above. This time we're comparing to |null|, so we expect 0
+ */
+actual = f6(arrUndef);
+expect = 0;
+addThis();
+
+
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+
+
+function addThis()
+{
+  statusitems[UBound] = status;
+  actualvalues[UBound] = actual;
+  expectedvalues[UBound] = expect;
+  UBound++;
+}
+
+
+function test()
+{
+  enterFunc('test');
+  printBugNumber(BUGNUMBER);
+  printStatus(summary);
+
+  for (var i=0; i<UBound; i++)
+  {
+    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
+  }
+
+  exitFunc ('test');
+}