### Eclipse Workspace Patch 1.0
#P oak-jcr
Index: src/test/java/org/apache/jackrabbit/oak/jcr/CompatibilityIssuesTest.java
===================================================================
--- src/test/java/org/apache/jackrabbit/oak/jcr/CompatibilityIssuesTest.java	(revision 1516120)
+++ src/test/java/org/apache/jackrabbit/oak/jcr/CompatibilityIssuesTest.java	(working copy)
@@ -30,6 +30,7 @@
 
 import javax.jcr.Credentials;
 import javax.jcr.InvalidItemStateException;
+import javax.jcr.ItemExistsException;
 import javax.jcr.Node;
 import javax.jcr.RepositoryException;
 import javax.jcr.Session;
@@ -222,5 +223,18 @@
             observingSession.logout();
         }
     }
+    
+    @Test
+    public void addNode() throws RepositoryException{
+        Session session = getAdminSession();
+        session.getRootNode().addNode("foo");
+        session.save();
+        try{
+            session.getRootNode().addNode("foo");   
+            fail("Expected ItemExistsException");
+        } catch (ItemExistsException e){
+            //ItemExistsException is expected to be thrown
+        }
+    }
 
 }