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diff --git a/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/readGraph/forObjectSet/ForObjectSetTest1.java b/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/readGraph/forObjectSet/ForObjectSetTest1.java
new file mode 100644
index 000000000..1a6a3a0b4
--- /dev/null
+++ b/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/readGraph/forObjectSet/ForObjectSetTest1.java
@@ -0,0 +1,161 @@
+/*******************************************************************************
+ * 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.forObjectSet;
+
+import org.junit.Test;
+import org.simantics.db.AsyncReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.Session;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.common.request.WriteRequest;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.procedure.AsyncSetListener;
+import org.simantics.db.testing.base.ExistingDatabaseTest;
+import org.simantics.layer0.Layer0;
+
+public class ForObjectSetTest1 extends ExistingDatabaseTest {
+	
+	private Throwable exception; 
+	private Resource relation;
+	private int adds = 0;
+	private int removes = 0;
+	
+	@Test
+	public void testObjectSet() throws Exception {
+		
+		Session session = getSession();
+
+		session.syncRequest(new WriteRequest() {
+
+			@Override
+			public void perform(WriteGraph graph) throws DatabaseException {
+				
+				Layer0 b = Layer0.getInstance(graph);
+				
+				relation = graph.newResource();
+				graph.claim(relation, b.SubrelationOf, b.IsRelatedTo);
+				graph.claim(relation, b.InverseOf, relation);
+				
+				graph.forObjectSet(graph.getRootLibrary(), relation, new AsyncSetListener<Resource>() {
+
+					@Override
+					public void add(AsyncReadGraph graph, Resource result) {
+						synchronized(this) {
+							adds++;
+						}
+					}
+
+					@Override
+					public void remove(AsyncReadGraph graph, Resource result) {
+						synchronized(this) {
+							removes++;
+						}
+					}
+
+					@Override
+					public void exception(AsyncReadGraph graph, Throwable t) {
+						exception = t;
+					}
+
+					@Override
+					public boolean isDisposed() {
+						return false;
+					}
+					
+				});
+			}
+			
+		});
+		
+		session.syncRequest(new WriteRequest() {
+
+			@Override
+			public void perform(WriteGraph g) throws DatabaseException {
+				
+				Layer0 b = Layer0.getInstance(g);
+				// Add
+				g.claim(g.getRootLibrary(), relation, b.Abstract);
+				
+			}
+			
+		});
+		
+		assert(adds == 1 && removes == 0);
+
+		session.syncRequest(new WriteRequest() {
+
+			@Override
+			public void perform(WriteGraph g) throws DatabaseException {
+				
+				Layer0 b = Layer0.getInstance(g);
+				// Nop
+				g.claim(g.getRootLibrary(), relation, b.Abstract);
+				
+			}
+			
+		});
+
+		assert(adds == 1 && removes == 0);
+
+		session.syncRequest(new WriteRequest() {
+
+			@Override
+			public void perform(WriteGraph g) throws DatabaseException {
+				
+				Layer0 b = Layer0.getInstance(g);
+				// Remove
+				g.deny(g.getRootLibrary(), relation, b.Abstract);
+				
+			}
+			
+		});
+
+		assert(adds == 1 && removes == 1);
+
+		session.syncRequest(new WriteRequest() {
+
+			@Override
+			public void perform(WriteGraph g) throws DatabaseException {
+				
+				Layer0 b = Layer0.getInstance(g);
+				// Nop
+				g.deny(g.getRootLibrary(), relation, b.Abstract);
+				
+			}
+			
+		});
+
+		assert(adds == 1 && removes == 1);
+
+		session.syncRequest(new WriteRequest() {
+
+			@Override
+			public void perform(WriteGraph g) throws DatabaseException {
+				
+				Layer0 b = Layer0.getInstance(g);
+				// nop
+				g.claim(g.getRootLibrary(), relation, b.Abstract);
+				g.deny(g.getRootLibrary(), relation, b.Abstract);
+				
+			}
+			
+		});
+
+		assert(adds == 1 && removes == 1);
+
+		if(exception != null) {
+			fail("Write transaction threw and exception (" + exception.getMessage() + ") which was not passed through ");
+		}
+		
+	}
+
+}