1 files changed, 39 insertions, 0 deletions
diff --git a/docs/teaching/exercises/tests/Test3e.java b/docs/teaching/exercises/tests/Test3e.java
new file mode 100755
index 000000000..d9f6b9c35
--- /dev/null
+++ b/docs/teaching/exercises/tests/Test3e.java
@@ -0,0 +1,39 @@
+/* *******************************************************************
+ * Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
+ * All rights reserved.
+ * This program and the accompanying materials are made available
+ * under the terms of the Common Public License v1.0
+ * which accompanies this distribution and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ *
+ * Contributors:
+ *     PARC     initial implementation
+ * ******************************************************************/
+
+package tests;
+
+import figures.*;
+import support.Log;
+import junit.framework.*;
+import java.util.List;
+import java.util.Arrays;
+
+public class Test3e extends Test {
+
+    public static void main(String[] args) {
+        junit.textui.TestRunner.run(Test3e.class);
+    }
+
+    public void testDuplicateAdd() {
+        Log.clear();
+        Point p1 = new Point(10, 100);
+        Group g1  = new Group(p1);
+	try {
+	    Group g2  = new Group(p1);
+            fail("should have thrown IllegalStateException");
+        } catch (IllegalStateException ea) {
+	    assertEquals(g1.toString(), ea.getMessage());
+        }
+    }
+}
+