diff --git a/apps/vtn/vtnrsc/src/test/java/org/onosproject/vtnrsc/util/VtnEventuallyConsistentMapAdapter.java b/apps/vtn/vtnrsc/src/test/java/org/onosproject/vtnrsc/util/VtnEventuallyConsistentMapAdapter.java
new file mode 100644
index 0000000..0631f86
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/test/java/org/onosproject/vtnrsc/util/VtnEventuallyConsistentMapAdapter.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.vtnrsc.util;
+
+import java.util.Collection;
+import java.util.Map;
+import java.util.Set;
+import java.util.function.BiFunction;
+
+import org.onosproject.store.service.EventuallyConsistentMap;
+import org.onosproject.store.service.EventuallyConsistentMapListener;
+
+/**
+ * Testing adapter for EventuallyConsistentMap.
+ */
+public class VtnEventuallyConsistentMapAdapter<K, V> implements EventuallyConsistentMap<K, V> {
+    @Override
+    public int size() {
+        return 0;
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return false;
+    }
+
+    @Override
+    public boolean containsKey(K key) {
+        return false;
+    }
+
+    @Override
+    public boolean containsValue(V value) {
+        return false;
+    }
+
+    @Override
+    public V get(K key) {
+        return null;
+    }
+
+    @Override
+    public void put(K key, V value) {
+
+    }
+
+    @Override
+    public V remove(K key) {
+        return null;
+    }
+
+    @Override
+    public void remove(K key, V value) {
+
+    }
+
+    @Override
+    public V compute(K key, BiFunction<K, V, V> recomputeFunction) {
+        return null;
+    }
+
+    @Override
+    public void putAll(Map<? extends K, ? extends V> m) {
+
+    }
+
+    @Override
+    public void clear() {
+
+    }
+
+    @Override
+    public Set<K> keySet() {
+        return null;
+    }
+
+    @Override
+    public Collection<V> values() {
+        return null;
+    }
+
+    @Override
+    public Set<Map.Entry<K, V>> entrySet() {
+        return null;
+    }
+
+    @Override
+    public void addListener(EventuallyConsistentMapListener<K, V> listener) {
+
+    }
+
+    @Override
+    public void removeListener(EventuallyConsistentMapListener<K, V> listener) {
+
+    }
+
+    @Override
+    public void destroy() {
+
+    }
+}