### Eclipse Workspace Patch 1.0
#P oak-core
Index: src/test/java/org/apache/jackrabbit/oak/security/user/UserValidatorTest.java
===================================================================
--- src/test/java/org/apache/jackrabbit/oak/security/user/UserValidatorTest.java	(revision 1527574)
+++ src/test/java/org/apache/jackrabbit/oak/security/user/UserValidatorTest.java	(working copy)
@@ -207,6 +207,28 @@
             root.refresh();
         }
     }
+    
+    @Test
+    public void testRemoveAdminUserFolder() throws Exception {
+        try {
+            String adminId = getConfig().getConfigValue(PARAM_ADMIN_ID, DEFAULT_ADMIN_ID);
+            UserManager userMgr = getUserManager(root);
+            Authorizable admin = userMgr.getAuthorizable(adminId);
+            if (admin == null) {
+                admin = userMgr.createUser(adminId, adminId);
+                root.commit();
+            }
+
+            root.getTree(admin.getPath()).getParent().remove();
+            root.commit();
+            fail("Admin user cannot be removed");
+        } catch (CommitFailedException e) {
+            // success
+        } finally {
+            root.refresh();
+        }
+    }    
+    
 
     @Test
     public void testDisableAdminUser() throws Exception {