diff --git a/core/net/src/test/java/org/onosproject/cluster/impl/TestClusterCommunicationService.java b/core/net/src/test/java/org/onosproject/cluster/impl/TestClusterCommunicationService.java
new file mode 100644
index 0000000..680ddd0
--- /dev/null
+++ b/core/net/src/test/java/org/onosproject/cluster/impl/TestClusterCommunicationService.java
@@ -0,0 +1,178 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.cluster.impl;
+
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Executor;
+import java.util.concurrent.ExecutorService;
+import java.util.function.Consumer;
+import java.util.function.Function;
+
+import com.google.common.collect.Maps;
+import org.onlab.util.Tools;
+import org.onosproject.cluster.NodeId;
+import org.onosproject.store.cluster.messaging.ClusterCommunicationService;
+import org.onosproject.store.cluster.messaging.ClusterMessageHandler;
+import org.onosproject.store.cluster.messaging.MessageSubject;
+import org.onosproject.store.cluster.messaging.MessagingException;
+
+/**
+ * Cluster communication service implementation used for testing.
+ */
+public class TestClusterCommunicationService implements ClusterCommunicationService {
+    private final NodeId localNodeId;
+    private final Map<NodeId, TestClusterCommunicationService> nodes;
+    private final Map<MessageSubject, Function<byte[], CompletableFuture<byte[]>>> subscribers =
+            Maps.newConcurrentMap();
+
+    public TestClusterCommunicationService(NodeId localNodeId, Map<NodeId, TestClusterCommunicationService> nodes) {
+        this.localNodeId = localNodeId;
+        this.nodes = nodes;
+        nodes.put(localNodeId, this);
+    }
+
+    @Override
+    public <M> void broadcast(M message, MessageSubject subject, Function<M, byte[]> encoder) {
+        nodes.forEach((nodeId, node) -> {
+            if (!nodeId.equals(localNodeId)) {
+                node.handle(subject, encoder.apply(message));
+            }
+        });
+    }
+
+    @Override
+    public <M> void broadcastIncludeSelf(M message, MessageSubject subject, Function<M, byte[]> encoder) {
+        nodes.values().forEach(node -> node.handle(subject, encoder.apply(message)));
+    }
+
+    @Override
+    public <M> CompletableFuture<Void> unicast(
+            M message, MessageSubject subject, Function<M, byte[]> encoder, NodeId toNodeId) {
+        TestClusterCommunicationService node = nodes.get(toNodeId);
+        if (node != null) {
+            node.handle(subject, encoder.apply(message));
+        }
+        return CompletableFuture.completedFuture(null);
+    }
+
+    @Override
+    public <M> void multicast(M message, MessageSubject subject, Function<M, byte[]> encoder, Set<NodeId> nodeIds) {
+        nodes.entrySet().stream()
+                .filter(e -> nodeIds.contains(e.getKey()))
+                .forEach(e -> e.getValue().handle(subject, encoder.apply(message)));
+    }
+
+    @Override
+    public <M, R> CompletableFuture<R> sendAndReceive(
+            M message,
+            MessageSubject subject,
+            Function<M, byte[]> encoder,
+            Function<byte[], R> decoder,
+            NodeId toNodeId) {
+        TestClusterCommunicationService node = nodes.get(toNodeId);
+        if (node == null) {
+            return Tools.exceptionalFuture(new MessagingException.NoRemoteHandler());
+        }
+        return node.handle(subject, encoder.apply(message)).thenApply(decoder);
+    }
+
+    private CompletableFuture<byte[]> handle(MessageSubject subject, byte[] message) {
+        Function<byte[], CompletableFuture<byte[]>> subscriber = subscribers.get(subject);
+        if (subscriber != null) {
+            return subscriber.apply(message);
+        }
+        return Tools.exceptionalFuture(new MessagingException.NoRemoteHandler());
+    }
+
+    private boolean isSubscriber(MessageSubject subject) {
+        return subscribers.containsKey(subject);
+    }
+
+    @Override
+    public <M, R> void addSubscriber(
+            MessageSubject subject,
+            Function<byte[], M> decoder,
+            Function<M, R> handler,
+            Function<R, byte[]> encoder,
+            Executor executor) {
+        subscribers.put(subject, message -> {
+            CompletableFuture<byte[]> future = new CompletableFuture<>();
+            executor.execute(() -> {
+                try {
+                    future.complete(encoder.apply(handler.apply(decoder.apply(message))));
+                } catch (Exception e) {
+                    future.completeExceptionally(new MessagingException.RemoteHandlerFailure());
+                }
+            });
+            return future;
+        });
+    }
+
+    @Override
+    public <M, R> void addSubscriber(
+            MessageSubject subject,
+            Function<byte[], M> decoder,
+            Function<M, CompletableFuture<R>> handler,
+            Function<R, byte[]> encoder) {
+        subscribers.put(subject, message -> {
+            CompletableFuture<byte[]> future = new CompletableFuture<>();
+            try {
+                handler.apply(decoder.apply(message)).whenComplete((result, error) -> {
+                    if (error == null) {
+                        future.complete(encoder.apply(result));
+                    } else {
+                        future.completeExceptionally(new MessagingException.RemoteHandlerFailure());
+                    }
+                });
+            } catch (Exception e) {
+                future.completeExceptionally(new MessagingException.RemoteHandlerFailure());
+            }
+            return future;
+        });
+    }
+
+    @Override
+    public <M> void addSubscriber(
+            MessageSubject subject,
+            Function<byte[], M> decoder,
+            Consumer<M> handler,
+            Executor executor) {
+        subscribers.put(subject, message -> {
+            CompletableFuture<byte[]> future = new CompletableFuture<>();
+            executor.execute(() -> {
+                try {
+                    handler.accept(decoder.apply(message));
+                    future.complete(null);
+                } catch (Exception e) {
+                    future.completeExceptionally(new MessagingException.RemoteHandlerFailure());
+                }
+            });
+            return future;
+        });
+    }
+
+    @Override
+    public void removeSubscriber(MessageSubject subject) {
+        subscribers.remove(subject);
+    }
+
+    @Override
+    public void addSubscriber(MessageSubject subject, ClusterMessageHandler subscriber, ExecutorService executor) {
+        throw new UnsupportedOperationException();
+    }
+}