issue#293 : Found another deadlock in sail test, adding timeout

Investigating this further

Signed-off-by: Peter Ansell <p_ansell@yahoo.com>

testsuites/lucene/src/main/java/org/eclipse/rdf4j/sail/lucene/AbstractLuceneSailTest.java

@@ -28,6 +28,7 @@
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
 
 import org.eclipse.rdf4j.model.IRI;
 import org.eclipse.rdf4j.model.Literal;
@@ -51,10 +52,15 @@
 import org.eclipse.rdf4j.sail.memory.MemoryStore;
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.Timeout;
 
 public abstract class AbstractLuceneSailTest {
 
+	@Rule
+	public Timeout timeout = new Timeout(10, TimeUnit.MINUTES);
+
 	protected static final ValueFactory vf = SimpleValueFactory.getInstance();
 
 	public static final String QUERY_STRING;