diff --git a/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/provider/DefaultVirtualFlowRuleProviderTest.java b/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/provider/DefaultVirtualFlowRuleProviderTest.java
index e268f32..01129af 100644
--- a/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/provider/DefaultVirtualFlowRuleProviderTest.java
+++ b/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/provider/DefaultVirtualFlowRuleProviderTest.java
@@ -21,25 +21,18 @@
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
-import org.onlab.osgi.ServiceDirectory;
-import org.onlab.packet.IpAddress;
-import org.onlab.packet.MacAddress;
-import org.onlab.packet.VlanId;
 import org.onosproject.core.ApplicationId;
 import org.onosproject.core.CoreServiceAdapter;
 import org.onosproject.core.DefaultApplicationId;
-import org.onosproject.core.IdGenerator;
 import org.onosproject.incubator.net.virtual.DefaultVirtualDevice;
 import org.onosproject.incubator.net.virtual.DefaultVirtualNetwork;
 import org.onosproject.incubator.net.virtual.DefaultVirtualPort;
 import org.onosproject.incubator.net.virtual.NetworkId;
 import org.onosproject.incubator.net.virtual.TenantId;
 import org.onosproject.incubator.net.virtual.VirtualDevice;
-import org.onosproject.incubator.net.virtual.VirtualHost;
 import org.onosproject.incubator.net.virtual.VirtualLink;
 import org.onosproject.incubator.net.virtual.VirtualNetwork;
-import org.onosproject.incubator.net.virtual.VirtualNetworkAdminService;
-import org.onosproject.incubator.net.virtual.VirtualNetworkListener;
+import org.onosproject.incubator.net.virtual.VirtualNetworkAdminServiceAdapter;
 import org.onosproject.incubator.net.virtual.VirtualPort;
 import org.onosproject.net.ConnectPoint;
 import org.onosproject.net.DefaultAnnotations;
@@ -49,8 +42,6 @@
 import org.onosproject.net.DefaultPort;
 import org.onosproject.net.Device;
 import org.onosproject.net.DeviceId;
-import org.onosproject.net.HostId;
-import org.onosproject.net.HostLocation;
 import org.onosproject.net.Link;
 import org.onosproject.net.Path;
 import org.onosproject.net.Port;
@@ -76,7 +67,6 @@
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Set;
-import java.util.concurrent.atomic.AtomicLong;
 import java.util.stream.Collectors;
 
 import static org.junit.Assert.assertEquals;
@@ -307,18 +297,6 @@
         public ApplicationId registerApplication(String name) {
             return new TestApplicationId(1, name);
         }
-
-        @Override
-        public IdGenerator getIdGenerator(String topic) {
-            return new IdGenerator() {
-                private AtomicLong counter = new AtomicLong(0);
-
-                @Override
-                public long getNewId() {
-                    return counter.getAndIncrement();
-                }
-            };
-        }
     }
 
     private static class TestApplicationId extends DefaultApplicationId {
@@ -328,12 +306,7 @@
     }
 
     private class TestVirtualNetworkAdminService
-            implements VirtualNetworkAdminService {
-
-        @Override
-        public Set<VirtualNetwork> getVirtualNetworks(TenantId tenantId) {
-            return null;
-        }
+            extends VirtualNetworkAdminServiceAdapter {
 
         @Override
         public Set<VirtualDevice> getVirtualDevices(NetworkId networkId) {
@@ -341,11 +314,6 @@
         }
 
         @Override
-        public Set<VirtualHost> getVirtualHosts(NetworkId networkId) {
-            return null;
-        }
-
-        @Override
         public Set<VirtualLink> getVirtualLinks(NetworkId networkId) {
             return new HashSet<>();
         }
@@ -357,112 +325,9 @@
         }
 
         @Override
-        public <T> T get(NetworkId networkId, Class<T> serviceClass) {
-            return null;
-        }
-
-        @Override
-        public ServiceDirectory getServiceDirectory() {
-            return null;
-        }
-
-        @Override
         public ApplicationId getVirtualNetworkApplicationId(NetworkId networkId) {
             return vAppId;
         }
-
-        @Override
-        public void registerTenantId(TenantId tenantId) {
-
-        }
-
-        @Override
-        public void unregisterTenantId(TenantId tenantId) {
-
-        }
-
-        @Override
-        public Set<TenantId> getTenantIds() {
-            return null;
-        }
-
-        @Override
-        public VirtualNetwork createVirtualNetwork(TenantId tenantId) {
-            return null;
-        }
-
-        @Override
-        public void removeVirtualNetwork(NetworkId networkId) {
-
-        }
-
-        @Override
-        public VirtualDevice createVirtualDevice(NetworkId networkId,
-                                                 DeviceId deviceId) {
-            return null;
-        }
-
-        @Override
-        public void removeVirtualDevice(NetworkId networkId, DeviceId deviceId) {
-
-        }
-
-        @Override
-        public VirtualHost createVirtualHost(NetworkId networkId, HostId hostId,
-                                             MacAddress mac, VlanId vlan,
-                                             HostLocation location,
-                                             Set<IpAddress> ips) {
-            return null;
-        }
-
-        @Override
-        public void removeVirtualHost(NetworkId networkId, HostId hostId) {
-
-        }
-
-        @Override
-        public VirtualLink createVirtualLink(NetworkId networkId,
-                                             ConnectPoint src, ConnectPoint dst) {
-            return null;
-        }
-
-        @Override
-        public void removeVirtualLink(NetworkId networkId,
-                                      ConnectPoint src, ConnectPoint dst) {
-
-        }
-
-        @Override
-        public VirtualPort createVirtualPort(NetworkId networkId,
-                                             DeviceId deviceId,
-                                             PortNumber portNumber,
-                                             ConnectPoint realizedBy) {
-            return null;
-        }
-
-        @Override
-        public void bindVirtualPort(NetworkId networkId,
-                                    DeviceId deviceId,
-                                    PortNumber portNumber,
-                                    ConnectPoint realizedBy) {
-
-        }
-
-        @Override
-        public void removeVirtualPort(NetworkId networkId, DeviceId deviceId,
-                                      PortNumber portNumber) {
-
-        }
-
-        @Override
-        public void addListener(VirtualNetworkListener listener) {
-
-        }
-
-        @Override
-        public void removeListener(VirtualNetworkListener listener) {
-
-        }
     }
 
     private static class TestTopologyService extends TopologyServiceAdapter {