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diff --git a/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/readGraph/getSuperTypes/GetSupertypesTest7.java b/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/readGraph/getSuperTypes/GetSupertypesTest7.java
new file mode 100644
index 000000000..80670f09e
--- /dev/null
+++ b/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/readGraph/getSuperTypes/GetSupertypesTest7.java
@@ -0,0 +1,61 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.tests.api.readGraph.getSuperTypes;
+
+import java.util.Set;
+import java.util.UUID;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.testing.annotation.Fails;
+import org.simantics.db.testing.base.WriteReadTest;
+import org.simantics.db.tests.common.Writes;
+
+//Cyclic assertion
+
+@Fails
+public class GetSupertypesTest7 extends WriteReadTest {
+
+    private Resource type1;
+    private Resource type2;
+    private Resource instance1;
+
+    
+    
+    @Override
+    protected void write(WriteGraph graph) throws DatabaseException {
+    	
+        // New type with assertions
+        type1 = graph.newResource();
+        graph.claim(type1, L0.Inherits, L0.Entity);
+        type2 = graph.newResource();
+        graph.claim(type2, L0.Inherits, L0.Entity);
+        graph.claim(type1, L0.HasName, Writes.string(graph, UUID.randomUUID().toString()));
+ 
+        graph.claim(type1, L0.Asserts, Writes.assertion(graph, L0.Inherits, type2));
+        graph.claim(type2, L0.Asserts, Writes.assertion(graph, L0.Inherits, type1));
+        instance1 = graph.newResource();
+        graph.claim(instance1, L0.InstanceOf, type1);
+        
+    }
+    
+    @Override
+    protected void read(ReadGraph graph) throws DatabaseException {
+    	
+    	Set<Resource> result = graph.getSupertypes(instance1);  
+    	assertNotNull("Null not allowed", result);
+    	assertTrue("Wrong number of results: " + result.size(), (result.size() == 1));
+    	assertTrue("Wrong types: ", (result.contains(L0.Entity)));
+    }
+}