diff --git a/mozilla/js2/tests/js/js2_0/shell.js b/mozilla/js2/tests/js/js2_0/shell.js
new file mode 100644
index 00000000000..07bbf7648fd
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+++ b/mozilla/js2/tests/js/js2_0/shell.js
@@ -0,0 +1,173 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * The contents of this file are subject to the Netscape 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/NPL/
+ *
+ * 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 Mozilla Communicator client code, released March
+ * 31, 1998.
+ *
+ * The Initial Developer of the Original Code is Netscape Communications
+ * Corporation. Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ * Rob Ginda rginda@netscape.com
+ */
+
+var FAILED = "FAILED!: ";
+var STATUS = "STATUS: ";
+var BUGNUMBER = "BUGNUMBER: ";
+var VERBOSE = false;
+var SECT_PREFIX = 'Section ';
+var SECT_SUFFIX = ' of test -';
+var callStack = new Array();
+
+
+/*
+ * The test driver checks for a phrase like this in the test output.
+ * If such a phrase exists, it will set n as the expected exit code.
+ */
+function expectExitCode(n)
+{
+
+  print('--- NOTE: IN THIS TESTCASE, WE EXPECT EXIT CODE ' + n + ' ---');
+
+}
+
+/*
+ * Report a failure in the 'accepted' manner
+ */
+function reportFailure (msg)
+{
+    var lines = msg.split ("\n");
+    var l;
+    var funcName = currentFunc();
+    var prefix = (funcName) ? "[reported from " + funcName + "] ": "";
+    
+    for (var i=0; i<lines.length; i++)
+        print (FAILED + prefix + lines[i]);
+
+}
+
+/*
+ * Print a non-failure message.
+ */
+function printStatus (msg)
+{
+    var lines = msg.split ("\n");
+    var l;
+
+    for (var i=0; i<lines.length; i++)
+        print (STATUS + lines[i]);
+
+}
+
+/*
+ * Print a bugnumber message.
+ */
+function printBugNumber (num)
+{
+
+    print (BUGNUMBER + num);
+
+}
+
+/*
+ * Compare expected result to actual result, if they differ (in value and/or
+ * type) report a failure.  If description is provided, include it in the 
+ * failure report.
+ */
+function reportCompare (expected, actual, description)
+{
+    var expected_t = typeof expected;
+    var actual_t = typeof actual;
+    var output = "";
+    
+    if ((VERBOSE) && (typeof description != "undefined"))
+        printStatus ("Comparing '" + description + "'");
+
+    if (expected_t != actual_t)
+        output += "Type mismatch, expected type " + expected_t + 
+            ", actual type " + actual_t + "\n";
+    else if (VERBOSE)
+        printStatus ("Expected type '" + actual_t + "' matched actual " +
+                     "type '" + expected_t + "'");
+
+    if (expected != actual)
+        output += "Expected value '" + expected + "', Actual value '" + actual +
+            "'\n";
+    else if (VERBOSE)
+        printStatus ("Expected value '" + actual + "' matched actual " +
+                     "value '" + expected + "'");
+
+    if (output != "")
+    {
+        if (typeof description != "undefined")
+            reportFailure (description);
+        reportFailure (output);   
+    }
+
+}
+
+/*
+ * Puts funcName at the top of the call stack.  This stack is used to show
+ * a function-reported-from field when reporting failures.
+ */
+function enterFunc (funcName)
+{
+/*****************************************************************
+    if (!funcName.match(/\(\)$/))
+        funcName += "()";
+ *****************************************************************/
+    callStack.push(funcName);
+
+}
+
+/*
+ * Pops the top funcName off the call stack.  funcName is optional, and can be
+ * used to check push-pop balance.
+ */
+function exitFunc (funcName)
+{
+    var lastFunc = callStack.pop();
+    
+    if (funcName)
+    {
+        /**************************************************************
+        if (!funcName.match(/\(\)$/))
+            funcName += "()";
+         **************************************************************/
+        if (lastFunc != funcName)
+            reportFailure ("Test driver failure, expected to exit function '" +
+                           funcName + "' but '" + lastFunc + "' came off " +
+                           "the stack");
+    }
+    
+}
+
+/*
+ * Peeks at the top of the call stack.
+ */
+function currentFunc()
+{
+    
+    return callStack[callStack.length - 1];
+    
+}
+
+/*
+ * Statuses current section of a test 
+ */
+function inSection(x)
+{
+  return SECT_PREFIX + x + SECT_SUFFIX;
+}
+