diff --git a/core/net/src/test/java/org/onosproject/net/device/impl/DeviceManagerTest.java b/core/net/src/test/java/org/onosproject/net/device/impl/DeviceManagerTest.java
index 4d8d2fc..7597e7c 100644
--- a/core/net/src/test/java/org/onosproject/net/device/impl/DeviceManagerTest.java
+++ b/core/net/src/test/java/org/onosproject/net/device/impl/DeviceManagerTest.java
@@ -32,6 +32,7 @@
 import org.onosproject.cluster.NodeId;
 import org.onosproject.event.Event;
 import org.onosproject.common.event.impl.TestEventDispatcher;
+import org.onosproject.incubator.net.config.NetworkConfigServiceAdapter;
 import org.onosproject.mastership.MastershipServiceAdapter;
 import org.onosproject.mastership.MastershipTerm;
 import org.onosproject.mastership.MastershipTermService;
@@ -115,8 +116,10 @@
         mgr.termService = mastershipManager;
         mgr.clusterService = new TestClusterService();
         mgr.deviceClockProviderService = new TestClockProviderService();
+        mgr.networkConfigService = new TestNetworkConfigService();
         mgr.activate();
 
+
         service.addListener(listener);
 
         provider = new TestProvider();
@@ -349,4 +352,7 @@
             return registerdBefore.contains(deviceId);
         }
     }
+
+    private class TestNetworkConfigService extends NetworkConfigServiceAdapter {
+    }
 }
diff --git a/core/net/src/test/java/org/onosproject/net/host/impl/HostManagerTest.java b/core/net/src/test/java/org/onosproject/net/host/impl/HostManagerTest.java
index 77b199b..9e113f3 100644
--- a/core/net/src/test/java/org/onosproject/net/host/impl/HostManagerTest.java
+++ b/core/net/src/test/java/org/onosproject/net/host/impl/HostManagerTest.java
@@ -37,6 +37,7 @@
 import org.onlab.packet.VlanId;
 import org.onosproject.event.Event;
 import org.onosproject.common.event.impl.TestEventDispatcher;
+import org.onosproject.incubator.net.config.NetworkConfigServiceAdapter;
 import org.onosproject.net.ConnectPoint;
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.Host;
@@ -123,6 +124,7 @@
         mgr.store = new SimpleHostStore();
         mgr.eventDispatcher = new TestEventDispatcher();
         registry = mgr;
+        mgr.networkConfigService = new TestNetworkConfigService();
         mgr.activate();
 
         mgr.addListener(listener);
@@ -520,4 +522,7 @@
         assertTrue(storedAddresses.size() == 2);
         assertTrue(storedAddresses.equals(Sets.newHashSet(add1, add2)));
     }
+
+    private class TestNetworkConfigService extends NetworkConfigServiceAdapter {
+    }
 }
diff --git a/core/net/src/test/java/org/onosproject/net/link/impl/LinkManagerTest.java b/core/net/src/test/java/org/onosproject/net/link/impl/LinkManagerTest.java
index f164fa8..391b2fd 100644
--- a/core/net/src/test/java/org/onosproject/net/link/impl/LinkManagerTest.java
+++ b/core/net/src/test/java/org/onosproject/net/link/impl/LinkManagerTest.java
@@ -20,6 +20,7 @@
 import org.junit.Before;
 import org.junit.Test;
 import org.onosproject.event.Event;
+import org.onosproject.incubator.net.config.NetworkConfigServiceAdapter;
 import org.onosproject.net.ConnectPoint;
 import org.onosproject.net.DefaultDevice;
 import org.onosproject.net.Device;
@@ -86,6 +87,7 @@
     protected DeviceManager devmgr = new TestDeviceManager();
 
 
+
     @Before
     public void setUp() {
         mgr = new LinkManager();
@@ -95,6 +97,7 @@
         mgr.store = new SimpleLinkStore();
         mgr.eventDispatcher = new TestEventDispatcher();
         mgr.deviceService = devmgr;
+        mgr.networkConfigService = new TestNetworkConfigService();
         mgr.activate();
 
         DEVICEIDMAP.put(DID1, DEV1);
@@ -302,5 +305,6 @@
         }
 
     }
-
+    private class TestNetworkConfigService extends NetworkConfigServiceAdapter {
+    }
 }