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diff --git a/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/readGraph/adapt/AdaptionFailureTest.java b/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/readGraph/adapt/AdaptionFailureTest.java
new file mode 100644
index 000000000..4fa898fdb
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+++ b/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/readGraph/adapt/AdaptionFailureTest.java
@@ -0,0 +1,158 @@
+/*******************************************************************************
+ * 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.adapt;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.simantics.db.AsyncReadGraph;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.Session;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.common.request.ResourceAsyncRead;
+import org.simantics.db.common.request.WriteRequest;
+import org.simantics.db.exception.AdaptionException;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.procedure.AsyncProcedure;
+import org.simantics.db.request.Read;
+import org.simantics.db.services.GlobalServiceInitializer;
+import org.simantics.db.testing.base.ExistingDatabaseTest;
+import org.simantics.layer0.Layer0;
+
+/**
+ * Checks that {@link ReadGraph#adapt(org.simantics.db.Resource, Class)},
+ * {@link ReadGraph#adaptUnique(org.simantics.db.Resource, Class)},
+ * <code>AsyncReadGraph.forAdapted</code> fail as expected.
+ * 
+ * <p>
+ * Regression test for https://www.simulationsite.net/trac/simantics/ticket/617
+ * 
+ * @author Tuukka Lehtonen
+ */
+public class AdaptionFailureTest extends ExistingDatabaseTest {
+
+    @Override
+    @Before
+    public void setUp() throws Exception {
+        super.setUp();
+        new GlobalServiceInitializer().initialize(getSession());
+    }
+
+    private Resource writeTypeless(Session session) throws DatabaseException {
+        final Resource[] typeless = { null };
+        session.syncRequest(new WriteRequest() {
+            @Override
+            public void perform(WriteGraph graph) throws DatabaseException {
+                Layer0 l0 = Layer0.getInstance(graph);
+                Resource tless = graph.newResource();
+                Resource name = graph.newResource();
+                graph.claim(name, l0.InstanceOf, null, l0.String);
+                graph.claimValue(name, "A Typeless Resource");
+                graph.claim(tless, l0.HasName, name);
+                typeless[0] = tless;
+            }
+        });
+        return typeless[0];
+    }
+
+    static abstract class Adapter {
+        String name;
+
+        public Adapter(String name) {
+            this.name = name;
+        }
+
+        public abstract <T> T adapt(ReadGraph graph, Resource r, Class<T> clazz) throws DatabaseException;
+
+        @Override
+        public String toString() {
+            return name;
+        }
+    }
+
+    private void adaptTester(final Adapter adapter) throws DatabaseException {
+        final Session session = getSession();
+        final Resource typeless = writeTypeless(session);
+        try {
+            String s = session.syncRequest(new Read<String>() {
+                @Override
+                public String perform(ReadGraph graph) throws DatabaseException {
+                    try {
+                        return adapter.adapt(graph, typeless, String.class);
+                    } catch (AdaptionException e) {
+                        throw e;
+                    } catch (DatabaseException e) {
+                        throw new DatabaseException("AdaptionException expected, got " + e, e);
+                    }
+                }
+            });
+
+            if (s == null)
+                fail(adapter + " must never return null");
+        } catch (AdaptionException e) {
+            // Failure with AdaptionException is expected
+            if (DEBUG)
+                System.out.println("Expected failure message: " + e.getMessage());
+        }
+    }
+
+    @Test
+    public void testAdapt() throws DatabaseException{
+        adaptTester(new Adapter("ReadGraph.adapt") {
+            @Override
+            public <T> T adapt(ReadGraph graph, Resource resource, Class<T> clazz) throws DatabaseException {
+                return graph.adapt(resource, clazz);
+            }
+        });
+    }
+
+    @Test
+    public void testAdaptUnique() throws DatabaseException{
+        adaptTester(new Adapter("ReadGraph.adaptUnique") {
+            @Override
+            public <T> T adapt(ReadGraph graph, Resource resource, Class<T> clazz) throws DatabaseException {
+                return graph.adaptUnique(resource, clazz);
+            }
+        });
+    }
+
+    @Test
+    public void testforAdapted() throws DatabaseException{
+        adaptTester(new Adapter("AsyncReadGraph.forAdapted") {
+            @Override
+            public <T> T adapt(ReadGraph graph, Resource resource, final Class<T> clazz) throws DatabaseException {
+                return graph.syncRequest(new ResourceAsyncRead<T>(resource) {
+                    @Override
+                    public void perform(AsyncReadGraph graph, AsyncProcedure<T> procedure) {
+                        graph.forAdapted(resource, clazz, procedure);
+                    }
+                });
+            }
+        });
+    }
+
+    @Test
+    public void testforUniqueAdapted() throws DatabaseException{
+        adaptTester(new Adapter("AsyncReadGraph.forUniqueAdapted") {
+            @Override
+            public <T> T adapt(ReadGraph graph, Resource resource, final Class<T> clazz) throws DatabaseException {
+                return graph.syncRequest(new ResourceAsyncRead<T>(resource) {
+                    @Override
+                    public void perform(AsyncReadGraph graph, AsyncProcedure<T> procedure) {
+                        graph.forUniqueAdapted(resource, clazz, procedure);
+                    }
+                });
+            }
+        });
+    }
+
+}