--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/lang/instrument/NullTransformerRemoveTest.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2003-2004 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed 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.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/**
+ * @test
+ * @bug 4920005 4882798
+ * @summary make sure removeTransformer(null) throws NullPointerException
+ * @author Robert Field as modified from the code of Gabriel Adauto, Wily Technology
+ *
+ * @run build NullTransformerRemoveTest
+ * @run shell MakeJAR.sh redefineAgent
+ * @run main/othervm -javaagent:redefineAgent.jar NullTransformerRemoveTest NullTransformerRemoveTest
+ */
+public class
+NullTransformerRemoveTest
+    extends ATransformerManagementTestCase
+{
+
+    /**
+     * Constructor for NullTransformerRemoveTest.
+     * @param name
+     */
+    public NullTransformerRemoveTest(String name) {
+        super(name);
+    }
+
+    public static void
+    main (String[] args)  throws Throwable {
+        ATestCaseScaffold   test = new NullTransformerRemoveTest(args[0]);
+        test.runTest();
+    }
+
+    protected final void
+    doRunTest() {
+        testNullTransformerRemove();
+    }
+
+
+    /**
+     * Remove null transformers from the the manager and check
+     * that it throws NullPointerException
+     */
+    public void
+    testNullTransformerRemove() {
+        boolean caught = false;
+
+        try {
+            fInst.removeTransformer(null);
+        } catch (NullPointerException npe) {
+            caught = true;
+        }
+        assertTrue(caught);
+    }
+
+}