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diff --git a/tests/org.simantics.db.tests/src/org/simantics/db/tests/client/CoreCrashTest.java b/tests/org.simantics.db.tests/src/org/simantics/db/tests/client/CoreCrashTest.java
new file mode 100644
index 000000000..2cec94fb8
--- /dev/null
+++ b/tests/org.simantics.db.tests/src/org/simantics/db/tests/client/CoreCrashTest.java
@@ -0,0 +1,137 @@
+/*******************************************************************************
+ * 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.client;
+
+import java.util.Collection;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.Session;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.testing.annotation.Fails;
+import org.simantics.db.testing.common.ExceptionUtils;
+import org.simantics.db.testing.common.TestBase;
+import org.simantics.db.testing.common.Tests;
+import org.simantics.db.testing.common.WriteQuery;
+import org.simantics.layer0.Layer0;
+
+/**
+ * Tests how interface handles Servers crash
+ *
+ * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
+ *
+ */
+public class CoreCrashTest extends TestBase {
+	private static final int WAIT_TIME = 200;
+	private Throwable error;
+	@Before
+	public void setUp() throws Exception {
+		super.setUp();
+	}
+
+	@After
+	public void tearDown() throws Exception {
+		try {
+		    Tests.getTestHandler().getServer().stop();
+		} catch (Exception e) {
+
+		}
+		super.tearDown();
+	}
+	@Override
+	public Session getSession() throws DatabaseException {
+		return Tests.getTestHandler().getSession();
+	}
+	/**
+	 * Tests how graph interface handles server crash when the crash occurs between transactions
+	 * @throws Exception
+	 */
+	public void testCrash() throws Exception {
+		final String randomName = "Name " + getRandomString();
+
+		// create something
+		Tests.getTestHandler().getSession().syncRequest(new WriteQuery(this) {
+			@Override
+			public void run(WriteGraph g) throws DatabaseException {
+				Layer0 b = Layer0.getInstance(g);
+				Resource instance = g.newResource();
+				g.claim(g.getRootLibrary(), b.ConsistsOf, instance);
+				g.claim(instance, b.InstanceOf, null, b.Type);
+				g.claimLiteral(instance, b.HasName, randomName);
+			}
+		});
+		checkException();
+		Tests.killCore();
+
+		// this should create an error
+		Tests.getTestHandler().getSession().asyncRequest(new TestReadRequest() {
+			@Override
+			public void run(ReadGraph g) throws DatabaseException {
+				Layer0 b = Layer0.getInstance(g);
+				Collection<Resource> resources = g.getObjects(g.getRootLibrary(), b.ConsistsOf);
+				fail("Missing exception after core killed.");
+				for (Resource r : resources) {
+					g.getRelatedValue(r, b.HasName);
+				}
+			}
+		});
+
+		// Wait for read request to complete
+		for (int i = 0; i < 10; i++) {
+			try {
+				Thread.sleep(WAIT_TIME);
+			} catch (InterruptedException e) {
+
+			}
+			if (hasException())
+				break;
+		}
+		if (!hasException()) {
+			throw new Exception("Connection failure before or during request did not cause an error");
+		}
+		error = getException();
+		System.out.println("Connection failure caused an error:\n" + ExceptionUtils.getStackTrace(error) );
+	}
+
+	/**
+	 * Tests how graph interface handles server crash when the crash occurs between transactions
+	 * @throws Exception
+	 */
+    @Test
+    @Fails
+	public void testCrash2() throws Exception {
+		final String randomName = "Name " + getRandomString();
+
+		Tests.killCore();
+
+		// create something
+		Tests.getTestHandler().getSession().syncRequest(new WriteQuery(this) {
+			@Override
+			public void run(WriteGraph g) throws DatabaseException {
+				Layer0 b = Layer0.getInstance(g);
+				Resource instance = g.newResource();
+				g.claim(g.getRootLibrary(), b.ConsistsOf, instance);
+				g.claim(instance, b.InstanceOf, null, b.Type);
+				g.claimLiteral(instance, b.HasName, randomName);
+			}
+		});
+		if (!hasException()) {
+			throw new Exception("Connection failure did not cause an error");
+		}
+		error = getException();
+		System.out.println("Connection failure caused an error:\n" + ExceptionUtils.getStackTrace(error));
+	}
+}