diff --git a/core/api/src/test/java/org/onlab/onos/cluster/ClusterServiceAdapter.java b/core/api/src/test/java/org/onlab/onos/cluster/ClusterServiceAdapter.java
new file mode 100644
index 0000000..5e1e3b6
--- /dev/null
+++ b/core/api/src/test/java/org/onlab/onos/cluster/ClusterServiceAdapter.java
@@ -0,0 +1,36 @@
+package org.onlab.onos.cluster;
+
+import java.util.Set;
+
+/**
+ * Test adapter for the cluster service.
+ */
+public class ClusterServiceAdapter implements ClusterService {
+    @Override
+    public ControllerNode getLocalNode() {
+        return null;
+    }
+
+    @Override
+    public Set<ControllerNode> getNodes() {
+        return null;
+    }
+
+    @Override
+    public ControllerNode getNode(NodeId nodeId) {
+        return null;
+    }
+
+    @Override
+    public ControllerNode.State getState(NodeId nodeId) {
+        return null;
+    }
+
+    @Override
+    public void addListener(ClusterEventListener listener) {
+    }
+
+    @Override
+    public void removeListener(ClusterEventListener listener) {
+    }
+}