Add junit test for vnfapiProvider

(1) added junit test for vnf apiProvider
(2) formatted vnfapiProvider via using ONAP java code formatter
(3) added license for VnfSdnUtilTest

Issue-Id: SDNC-123
Change-Id: Ia0a12003a97331ae790224df14012b48d99af7d5
Signed-off-by: Hao Kuang <Hao.Kuang@amdocs.com>

2 files changed, 1529 insertions, 0 deletions

diff --git a/vnfapi/provider/src/test/java/org/onap/sdnc/vnfapi/VnfSdnUtilTest.java b/vnfapi/provider/src/test/java/org/onap/sdnc/vnfapi/VnfSdnUtilTest.java
index dbfca074..3f486f62 100644
--- a/vnfapi/provider/src/test/java/org/onap/sdnc/vnfapi/VnfSdnUtilTest.java
+++ b/vnfapi/provider/src/test/java/org/onap/sdnc/vnfapi/VnfSdnUtilTest.java
@@ -1,3 +1,23 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : SDN-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ *                             reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
 package org.onap.sdnc.vnfapi;
 
 import org.junit.Assert;
diff --git a/vnfapi/provider/src/test/java/org/onap/sdnc/vnfapi/vnfapiProviderTest.java b/vnfapi/provider/src/test/java/org/onap/sdnc/vnfapi/vnfapiProviderTest.java
new file mode 100644
index 00000000..5ea0c119
--- /dev/null
+++ b/vnfapi/provider/src/test/java/org/onap/sdnc/vnfapi/vnfapiProviderTest.java
@@ -0,0 +1,1509 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : SDN-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ *                             reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.sdnc.vnfapi;
+
+import com.google.common.base.Optional;
+import com.google.common.util.concurrent.CheckedFuture;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.binding.api.NotificationPublishService;
+import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
+import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
+import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
+import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
+import org.opendaylight.controller.sal.binding.api.BindingAwareBroker;
+import org.opendaylight.controller.sal.binding.api.RpcProviderRegistry;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.NetworkTopologyOperationInput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.NetworkTopologyOperationOutput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.PreloadNetworkTopologyOperationInput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.PreloadNetworkTopologyOperationOutput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.PreloadVfModuleTopologyOperationInput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.PreloadVfModuleTopologyOperationOutput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.PreloadVfModules;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.PreloadVnfInstanceTopologyOperationInput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.PreloadVnfInstanceTopologyOperationOutput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.PreloadVnfInstances;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.PreloadVnfTopologyOperationInput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.PreloadVnfTopologyOperationOutput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.PreloadVnfs;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.VNFAPIService;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.VfModuleTopologyOperationInput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.VfModuleTopologyOperationOutput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.VfModules;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.VnfInstanceTopologyOperationInput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.VnfInstanceTopologyOperationOutput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.VnfInstances;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.VnfTopologyOperationInput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.VnfTopologyOperationOutput;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.Vnfs;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.network.request.information.NetworkRequestInformation;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.network.topology.identifier.NetworkTopologyIdentifier;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.network.topology.information.NetworkTopologyInformation;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.preload.data.PreloadData;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.preload.data.PreloadDataBuilder;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.preload.model.information.VnfPreloadList;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.preload.vf.module.model.information.VfModulePreloadList;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.preload.vnf.instance.model.information.VnfInstancePreloadList;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.request.information.RequestInformation;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.sdnc.request.header.SdncRequestHeader;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.service.data.ServiceData;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.service.data.ServiceDataBuilder;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.service.information.ServiceInformation;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.service.status.ServiceStatus;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.service.status.ServiceStatusBuilder;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vf.module.identifiers.VfModuleIdentifiers;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vf.module.model.infrastructure.VfModuleList;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vf.module.preload.data.VfModulePreloadData;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vf.module.preload.data.VfModulePreloadDataBuilder;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vf.module.request.information.VfModuleRequestInformation;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vf.module.service.data.VfModuleServiceData;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vf.module.service.data.VfModuleServiceDataBuilder;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vf.module.topology.information.VfModuleTopologyInformation;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.instance.identifiers.VnfInstanceIdentifiers;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.instance.model.infrastructure.VnfInstanceList;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.instance.preload.data.VnfInstancePreloadData;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.instance.preload.data.VnfInstancePreloadDataBuilder;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.instance.request.information.VnfInstanceRequestInformation;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.instance.service.data.VnfInstanceServiceData;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.instance.service.data.VnfInstanceServiceDataBuilder;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.instance.topology.information.VnfInstanceTopologyInformation;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.model.infrastructure.VnfList;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.model.infrastructure.VnfListKey;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.request.information.VnfRequestInformation;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.topology.identifier.VnfTopologyIdentifier;
+import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.topology.information.VnfTopologyInformation;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.common.RpcResult;
+import org.powermock.reflect.Whitebox;
+
+import java.util.ArrayList;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Future;
+
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+public class vnfapiProviderTest {
+    @Rule public MockitoRule rule = MockitoJUnit.rule();
+
+    @Mock private DataBroker dataBroker;
+    @Mock private NotificationPublishService notificationPublishService;
+    @Mock private RpcProviderRegistry rpcProviderRegistry;
+    @Mock private VNFSDNSvcLogicServiceClient vnfsdnSvcLogicServiceClient;
+    @Mock private ReadWriteTransaction readWriteTransactionInCreateContainer;
+    @Mock private ReadWriteTransaction readWriteTransactionInDataChanged;
+    @Mock private CheckedFuture<Void, TransactionCommitFailedException> checkedFuture;
+
+    private vnfapiProvider vnfapiProvider;
+    private String vfModuleName;
+    private String vfModuleModelId;
+    private String vnfInstanceId;
+    private String vnfInstanceName;
+    private String vnfModelId;
+    private String svcRequestId;
+    private String serviceInstanceId;
+    private String vnfName;
+    private String vnfType;
+    private String vfModuleId;
+
+    @Before public void setUp() throws Exception {
+        doReturn(readWriteTransactionInCreateContainer).when(dataBroker).newReadWriteTransaction();
+        doReturn(checkedFuture).when(readWriteTransactionInCreateContainer).submit();
+        // mock readOnlyTransaction
+        ReadOnlyTransaction readOnlyTransaction = mock(ReadOnlyTransaction.class);
+        doReturn(readOnlyTransaction).when(dataBroker).newReadOnlyTransaction();
+        doReturn(checkedFuture).when(readOnlyTransaction).read(any(), any());
+        // mock writeTransaction
+        WriteTransaction writeTransaction = mock(WriteTransaction.class);
+        doReturn(writeTransaction).when(dataBroker).newWriteOnlyTransaction();
+        doReturn(checkedFuture).when(writeTransaction).submit();
+
+        vnfapiProvider = spy(new vnfapiProvider(dataBroker, notificationPublishService, rpcProviderRegistry,
+            vnfsdnSvcLogicServiceClient));
+    }
+
+    @After public void tearDown() throws Exception {
+
+    }
+
+    @Test public void close() throws Exception {
+        ExecutorService executor = Whitebox.getInternalState(vnfapiProvider, "executor");
+        BindingAwareBroker.RpcRegistration<VNFAPIService> vnfapiServiceRpcRegistration =
+            mock(BindingAwareBroker.RpcRegistration.class);
+        vnfapiProvider.rpcRegistration = vnfapiServiceRpcRegistration;
+
+        vnfapiProvider.close();
+
+        Assert.assertTrue(executor.isShutdown());
+        verify(vnfapiServiceRpcRegistration, times(1)).close();
+    }
+
+    @Test public void onDataChanged() throws Exception {
+        AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> asyncDataChangeEvent = mock(AsyncDataChangeEvent.class);
+        // instance of Vnfs
+        Vnfs vnfs = mock(Vnfs.class);
+        doReturn(vnfs).when(asyncDataChangeEvent).getUpdatedSubtree();
+        VnfList vnfList = mock(VnfList.class);
+        ServiceData serviceData = mock(ServiceData.class);
+        doReturn(serviceData).when(vnfList).getServiceData();
+        ServiceStatus serviceStatus = mock(ServiceStatus.class);
+        doReturn("N").when(serviceStatus).getFinalIndicator();
+        doReturn(ServiceStatus.RequestStatus.Synccomplete).when(serviceStatus).getRequestStatus();
+        doReturn(serviceStatus).when(vnfList).getServiceStatus();
+        ArrayList<VnfList> vnfListList = new ArrayList<>();
+        vnfListList.add(vnfList);
+        doReturn(vnfListList).when(vnfs).getVnfList();
+        doReturn(readWriteTransactionInDataChanged).when(dataBroker).newWriteOnlyTransaction();
+        doReturn(checkedFuture).when(readWriteTransactionInDataChanged).submit();
+
+        vnfapiProvider.onDataChanged(asyncDataChangeEvent);
+
+        verify(readWriteTransactionInDataChanged, times(1)).submit();
+
+        // instance of PreloadVnfs
+        PreloadVnfs preloadVnfs = mock(PreloadVnfs.class);
+        doReturn(preloadVnfs).when(asyncDataChangeEvent).getUpdatedSubtree();
+        ArrayList<VnfPreloadList> vnfPreloadLists = new ArrayList<>();
+        doReturn(vnfPreloadLists).when(preloadVnfs).getVnfPreloadList();
+        PreloadData preloadData = mock(PreloadData.class);
+        VnfPreloadList vnfPreloadList = mock(VnfPreloadList.class);
+        doReturn(preloadData).when(vnfPreloadList).getPreloadData();
+        vnfPreloadLists.add(vnfPreloadList);
+
+        vnfapiProvider.onDataChanged(asyncDataChangeEvent);
+
+        verify(readWriteTransactionInDataChanged, times(2)).submit();
+
+        // instance of PreloadVnfInstances
+        PreloadVnfInstances preloadVnfInstances = mock(PreloadVnfInstances.class);
+        doReturn(preloadVnfInstances).when(asyncDataChangeEvent).getUpdatedSubtree();
+        ArrayList<VnfInstancePreloadList> vnfInstancePreloadLists = new ArrayList<>();
+        doReturn(vnfInstancePreloadLists).when(preloadVnfInstances).getVnfInstancePreloadList();
+        VnfInstancePreloadList vnfInstancePreloadList = mock(VnfInstancePreloadList.class);
+        VnfInstancePreloadData vnfInstancePreloadData = mock(VnfInstancePreloadData.class);
+        doReturn(vnfInstancePreloadData).when(vnfInstancePreloadList).getVnfInstancePreloadData();
+        vnfInstancePreloadLists.add(vnfInstancePreloadList);
+
+        vnfapiProvider.onDataChanged(asyncDataChangeEvent);
+
+        verify(readWriteTransactionInDataChanged, times(3)).submit();
+
+        // instance of VnfInstances
+        VnfInstances vnfInstances = mock(VnfInstances.class);
+        doReturn(vnfInstances).when(asyncDataChangeEvent).getUpdatedSubtree();
+        ArrayList<VnfInstanceList> vnfInstanceLists = new ArrayList<>();
+        doReturn(vnfInstanceLists).when(vnfInstances).getVnfInstanceList();
+        VnfInstanceList vnfInstanceList = mock(VnfInstanceList.class);
+        vnfInstanceLists.add(vnfInstanceList);
+        VnfInstanceServiceData vnfInstanceServiceData = mock(VnfInstanceServiceData.class);
+        doReturn(vnfInstanceServiceData).when(vnfInstanceList).getVnfInstanceServiceData();
+        doReturn(serviceStatus).when(vnfInstanceList).getServiceStatus();
+
+        vnfapiProvider.onDataChanged(asyncDataChangeEvent);
+
+        verify(readWriteTransactionInDataChanged, times(4)).submit();
+
+        // instance of PreloadVfModules
+        PreloadVfModules preloadVfModules = mock(PreloadVfModules.class);
+        doReturn(preloadVfModules).when(asyncDataChangeEvent).getUpdatedSubtree();
+        ArrayList<VfModulePreloadList> vfModulePreloadLists = new ArrayList<>();
+        doReturn(vfModulePreloadLists).when(preloadVfModules).getVfModulePreloadList();
+        VfModulePreloadList vfModulePreloadList = mock(VfModulePreloadList.class);
+        vfModulePreloadLists.add(vfModulePreloadList);
+        VfModulePreloadData vfModulePreloadData = mock(VfModulePreloadData.class);
+        doReturn(vfModulePreloadData).when(vfModulePreloadList).getVfModulePreloadData();
+
+        vnfapiProvider.onDataChanged(asyncDataChangeEvent);
+
+        verify(readWriteTransactionInDataChanged, times(5)).submit();
+
+        // instance of VfModules
+        VfModules vfModules = mock(VfModules.class);
+        doReturn(preloadVfModules).when(asyncDataChangeEvent).getUpdatedSubtree();
+        ArrayList<VfModuleList> vfModuleLists = new ArrayList<>();
+        doReturn(vfModuleLists).when(vfModules).getVfModuleList();
+        VfModuleList vfModuleList = mock(VfModuleList.class);
+        vfModuleLists.add(vfModuleList);
+        VfModuleServiceData vfModuleServiceData = mock(VfModuleServiceData.class);
+        doReturn(vfModuleServiceData).when(vfModuleList).getVfModuleServiceData();
+        doReturn(serviceStatus).when(vfModuleList).getServiceStatus();
+
+        vnfapiProvider.onDataChanged(asyncDataChangeEvent);
+
+        verify(readWriteTransactionInDataChanged, times(6)).submit();
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>input.getVnfInstanceRequestInformation() == null</code>
+     *
+     * @throws Exception
+     */
+    @Test public void vnfInstanceTopologyOperationErrorOne() throws Exception {
+        VnfInstanceTopologyOperationInput vnfInstanceTopologyOperationInput =
+            mock(VnfInstanceTopologyOperationInput.class);
+        doReturn(null).when(vnfInstanceTopologyOperationInput).getVnfInstanceRequestInformation();
+
+        Future<RpcResult<VnfInstanceTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.vnfInstanceTopologyOperation(vnfInstanceTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, null or empty vnf-instance-id",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>viid == null</code>
+     *
+     * @throws Exception
+     */
+    @Test public void vnfInstanceTopologyOperationErrorTwo() throws Exception {
+        vnfInstanceId = "";
+        vnfInstanceName = "vnf-instance-name";
+        vnfModelId = "vnf-model-id";
+        VnfInstanceTopologyOperationInput vnfInstanceTopologyOperationInput =
+            mock(VnfInstanceTopologyOperationInput.class);
+        VnfInstanceRequestInformation vnfInstanceRequestInformation = mock(VnfInstanceRequestInformation.class);
+        doReturn(vnfInstanceName).when(vnfInstanceRequestInformation).getVnfInstanceName();
+        doReturn(vnfModelId).when(vnfInstanceRequestInformation).getVnfModelId();
+        doReturn(vnfInstanceId).when(vnfInstanceRequestInformation).getVnfInstanceId();
+        doReturn(vnfInstanceRequestInformation).when(vnfInstanceTopologyOperationInput)
+            .getVnfInstanceRequestInformation();
+
+        Future<RpcResult<VnfInstanceTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.vnfInstanceTopologyOperation(vnfInstanceTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, null or empty vnf-instance-id",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>svcLogicClient.hasGraph("VNF-API",SVC_OPERATION,null,"sync" = false</code>
+     *
+     * @throws Exception
+     */
+    @Test public void vnfInstanceTopologyOperationErrorThree() throws Exception {
+        vnfInstanceId = "vnf-instance-id";
+        vnfInstanceName = "vnf-instance-name";
+        vnfModelId = "vnf-model-id";
+        svcRequestId = "svc-request-id";
+
+        VnfInstanceTopologyOperationInput vnfInstanceTopologyOperationInput =
+            mock(VnfInstanceTopologyOperationInput.class);
+        VnfInstanceRequestInformation vnfInstanceRequestInformation = mock(VnfInstanceRequestInformation.class);
+        doReturn(vnfInstanceId).when(vnfInstanceRequestInformation).getVnfInstanceId();
+        doReturn(vnfInstanceName).when(vnfInstanceRequestInformation).getVnfInstanceName();
+        doReturn(vnfModelId).when(vnfInstanceRequestInformation).getVnfModelId();
+        doReturn(vnfInstanceRequestInformation).when(vnfInstanceTopologyOperationInput)
+            .getVnfInstanceRequestInformation();
+
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(vnfInstanceTopologyOperationInput).getSdncRequestHeader();
+        doReturn(svcRequestId).when(sdncRequestHeader).getSvcRequestId();
+
+        Future<RpcResult<VnfInstanceTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.vnfInstanceTopologyOperation(vnfInstanceTopologyOperationInput);
+
+        Assert.assertEquals("503", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertTrue(
+            rpcResultFuture.get().getResult().getResponseMessage().contains("No service logic active for VNF-API"));
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Success case
+     *
+     * @throws Exception
+     */
+    @Test public void vnfInstanceTopologyOperationSuccess() throws Exception {
+        vnfInstanceId = "vnf-instance-id";
+        vnfInstanceName = "vnf-instance-name";
+        vnfModelId = "vnf-model-id";
+        svcRequestId = "svc-request-id";
+
+        VnfInstanceTopologyOperationInput vnfInstanceTopologyOperationInput =
+            mock(VnfInstanceTopologyOperationInput.class);
+        VnfInstanceRequestInformation vnfInstanceRequestInformation = mock(VnfInstanceRequestInformation.class);
+        doReturn(vnfInstanceId).when(vnfInstanceRequestInformation).getVnfInstanceId();
+        doReturn(vnfInstanceName).when(vnfInstanceRequestInformation).getVnfInstanceName();
+        doReturn(vnfModelId).when(vnfInstanceRequestInformation).getVnfModelId();
+        doReturn(vnfInstanceRequestInformation).when(vnfInstanceTopologyOperationInput)
+            .getVnfInstanceRequestInformation();
+
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(vnfInstanceTopologyOperationInput).getSdncRequestHeader();
+        doReturn(svcRequestId).when(sdncRequestHeader).getSvcRequestId();
+        doReturn(SdncRequestHeader.SvcAction.Activate).when(sdncRequestHeader).getSvcAction();
+        ReadOnlyTransaction readOnlyTransaction = mock(ReadOnlyTransaction.class);
+        doReturn(readOnlyTransaction).when(dataBroker).newReadOnlyTransaction();
+        doReturn(checkedFuture).when(readOnlyTransaction).read(any(), any());
+        WriteTransaction writeTransaction = mock(WriteTransaction.class);
+        doReturn(writeTransaction).when(dataBroker).newWriteOnlyTransaction();
+        doReturn(checkedFuture).when(writeTransaction).submit();
+        doReturn(true).when(vnfsdnSvcLogicServiceClient).hasGraph(any(), any(), any(), any());
+
+        Future<RpcResult<VnfInstanceTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.vnfInstanceTopologyOperation(vnfInstanceTopologyOperationInput);
+
+        Assert.assertEquals("200", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals(null, rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>input.getVfModuleTopologyInformation() == null</code>
+     *
+     * @throws Exception
+     */
+    @Test public void vfModuleTopologyOperationErrorOne() throws Exception {
+        VfModuleTopologyOperationInput vfModuleTopologyOperationInput = mock(VfModuleTopologyOperationInput.class);
+        doReturn(null).when(vfModuleTopologyOperationInput).getVfModuleRequestInformation();
+        Future<RpcResult<VfModuleTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.vfModuleTopologyOperation(vfModuleTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, null or empty vf-module-id",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>vfid = ""</code>
+     * And
+     * <p>
+     * <code>viid = ""</code>
+     *
+     * @throws Exception
+     */
+    @Test public void vfModuleTopologyOperationErrorTwo() throws Exception {
+        // vifd = ""
+        vfModuleName = "vfModuleName";
+        vfModuleModelId = "vfModuleModelId";
+        vfModuleId = "";
+        vnfInstanceId = "";
+        VfModuleTopologyOperationInput vfModuleTopologyOperationInput = mock(VfModuleTopologyOperationInput.class);
+        VfModuleRequestInformation vfModuleRequestInformation = mock(VfModuleRequestInformation.class);
+        doReturn(vfModuleRequestInformation).when(vfModuleTopologyOperationInput).getVfModuleRequestInformation();
+        VfModuleIdentifiers vfModuleIdentifiers = mock(VfModuleIdentifiers.class);
+        doReturn(vfModuleName).when(vfModuleIdentifiers).getVfModuleName();
+        doReturn(vfModuleModelId).when(vfModuleIdentifiers).getVfModuleModelId();
+        doReturn(vfModuleId).when(vfModuleRequestInformation).getVfModuleId();
+
+        Future<RpcResult<VfModuleTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.vfModuleTopologyOperation(vfModuleTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, null or empty vf-module-id",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+
+        // viid = ""
+        vfModuleId = "vfModuleId";
+        doReturn(vfModuleId).when(vfModuleRequestInformation).getVfModuleId();
+        doReturn(vnfInstanceId).when(vfModuleRequestInformation).getVnfInstanceId();
+        rpcResultFuture = vnfapiProvider.vfModuleTopologyOperation(vfModuleTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, null or empty vnf-instance-id",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>svcLogicClient.hasGraph("VNF-API", SVC_OPERATION, null, "sync") = false</code>
+     *
+     * @throws Exception
+     */
+    @Test public void vfModuleTopologyOperationErrorThree() throws Exception {
+        // vifd = ""
+        vfModuleName = "vfModuleName";
+        vfModuleModelId = "vfModuleModelId";
+        vfModuleId = "vfModuleId";
+        vnfInstanceId = "vnfInstanceId";
+        VfModuleTopologyOperationInput vfModuleTopologyOperationInput = mock(VfModuleTopologyOperationInput.class);
+        VfModuleRequestInformation vfModuleRequestInformation = mock(VfModuleRequestInformation.class);
+        doReturn(vfModuleRequestInformation).when(vfModuleTopologyOperationInput).getVfModuleRequestInformation();
+        VfModuleIdentifiers vfModuleIdentifiers = mock(VfModuleIdentifiers.class);
+        doReturn(vfModuleName).when(vfModuleIdentifiers).getVfModuleName();
+        doReturn(vfModuleModelId).when(vfModuleIdentifiers).getVfModuleModelId();
+        doReturn(vfModuleId).when(vfModuleRequestInformation).getVfModuleId();
+        doReturn(vnfInstanceId).when(vfModuleRequestInformation).getVnfInstanceId();
+        // mock sdncRequestHeader
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(vfModuleTopologyOperationInput).getSdncRequestHeader();
+        doReturn(svcRequestId).when(sdncRequestHeader).getSvcRequestId();
+
+        Future<RpcResult<VfModuleTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.vfModuleTopologyOperation(vfModuleTopologyOperationInput);
+
+        Assert.assertEquals("503", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertTrue(
+            rpcResultFuture.get().getResult().getResponseMessage().contains("No service logic active for VNF-API"));
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Success case
+     *
+     * @throws Exception
+     */
+    @Test public void vfModuleTopologyOperationSuccess() throws Exception {
+        vfModuleName = "vfModuleName";
+        vfModuleModelId = "vfModuleModelId";
+        vfModuleId = "vfModuleId";
+        vnfInstanceId = "vnfInstanceId";
+        VfModuleTopologyOperationInput vfModuleTopologyOperationInput = mock(VfModuleTopologyOperationInput.class);
+        VfModuleRequestInformation vfModuleRequestInformation = mock(VfModuleRequestInformation.class);
+        doReturn(vfModuleRequestInformation).when(vfModuleTopologyOperationInput).getVfModuleRequestInformation();
+        VfModuleIdentifiers vfModuleIdentifiers = mock(VfModuleIdentifiers.class);
+        doReturn(vfModuleName).when(vfModuleIdentifiers).getVfModuleName();
+        doReturn(vfModuleModelId).when(vfModuleIdentifiers).getVfModuleModelId();
+        doReturn(vfModuleId).when(vfModuleRequestInformation).getVfModuleId();
+        doReturn(vnfInstanceId).when(vfModuleRequestInformation).getVnfInstanceId();
+        // mock sdncRequestHeader
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(vfModuleTopologyOperationInput).getSdncRequestHeader();
+        doReturn(svcRequestId).when(sdncRequestHeader).getSvcRequestId();
+        doReturn(true).when(vnfsdnSvcLogicServiceClient).hasGraph(any(), any(), any(), any());
+
+        Future<RpcResult<VfModuleTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.vfModuleTopologyOperation(vfModuleTopologyOperationInput);
+
+        Assert.assertEquals("200", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals(null, rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>input.getServiceInformation() == null</code>
+     *
+     * @throws Exception
+     */
+    @Test public void vnfTopologyOperationErrorOne() throws Exception {
+        VnfTopologyOperationInput vnfTopologyOperationInput = mock(VnfTopologyOperationInput.class);
+        doReturn(null).when(vnfTopologyOperationInput).getServiceInformation();
+
+        Future<RpcResult<VnfTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.vnfTopologyOperation(vnfTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, null or empty service-instance-id",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>input.getVnfRequestInformation() == null</code>
+     *
+     * @throws Exception
+     */
+    @Test public void vnfTopologyOperationErrorTwo() throws Exception {
+        serviceInstanceId = "serviceInstanceId";
+        VnfTopologyOperationInput vnfTopologyOperationInput = mock(VnfTopologyOperationInput.class);
+        ServiceInformation serviceInformation = mock(ServiceInformation.class);
+        doReturn(serviceInformation).when(vnfTopologyOperationInput).getServiceInformation();
+        doReturn(serviceInstanceId).when(serviceInformation).getServiceInstanceId();
+
+        Future<RpcResult<VnfTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.vnfTopologyOperation(vnfTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, null or empty vf-module-id",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>svcLogicClient.hasGraph("VNF-API", SVC_OPERATION, null, "sync") == false</code>
+     *
+     * @throws Exception
+     */
+    @Test public void vnfTopologyOperationErrorThree() throws Exception {
+        serviceInstanceId = "serviceInstanceId";
+        String vnfId = "vnfId";
+        VnfTopologyOperationInput vnfTopologyOperationInput = mock(VnfTopologyOperationInput.class);
+        ServiceInformation serviceInformation = mock(ServiceInformation.class);
+        doReturn(serviceInformation).when(vnfTopologyOperationInput).getServiceInformation();
+        doReturn(serviceInstanceId).when(serviceInformation).getServiceInstanceId();
+
+        VnfRequestInformation vnfRequestInformation = mock(VnfRequestInformation.class);
+        doReturn(vnfRequestInformation).when(vnfTopologyOperationInput).getVnfRequestInformation();
+        doReturn(vnfId).when(vnfRequestInformation).getVnfId();
+
+        Future<RpcResult<VnfTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.vnfTopologyOperation(vnfTopologyOperationInput);
+
+        Assert.assertEquals("503", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertTrue(
+            rpcResultFuture.get().getResult().getResponseMessage().contains("No service logic active for VNF-API"));
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Success case
+     *
+     * @throws Exception
+     */
+    @Test public void vnfTopologyOperationSuccess() throws Exception {
+        serviceInstanceId = "serviceInstanceId";
+        String vnfId = "vnfId";
+        VnfTopologyOperationInput vnfTopologyOperationInput = mock(VnfTopologyOperationInput.class);
+        ServiceInformation serviceInformation = mock(ServiceInformation.class);
+        doReturn(serviceInformation).when(vnfTopologyOperationInput).getServiceInformation();
+        doReturn(serviceInstanceId).when(serviceInformation).getServiceInstanceId();
+
+        VnfRequestInformation vnfRequestInformation = mock(VnfRequestInformation.class);
+        doReturn(vnfRequestInformation).when(vnfTopologyOperationInput).getVnfRequestInformation();
+        doReturn(vnfId).when(vnfRequestInformation).getVnfId();
+        doReturn(true).when(vnfsdnSvcLogicServiceClient).hasGraph(any(), any(), any(), any());
+
+        Future<RpcResult<VnfTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.vnfTopologyOperation(vnfTopologyOperationInput);
+
+        Assert.assertEquals("200", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals(null, rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>input.getServiceInformation() == null</code>
+     *
+     * @throws Exception
+     */
+    @Test public void networkTopologyOperationErrorOne() throws Exception {
+        VnfTopologyOperationInput vnfTopologyOperationInput = mock(VnfTopologyOperationInput.class);
+        doReturn(null).when(vnfTopologyOperationInput).getServiceInformation();
+
+        Future<RpcResult<VnfTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.vnfTopologyOperation(vnfTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, null or empty service-instance-id",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>input.getNetworkRequestInformation() == null</code>
+     *
+     * @throws Exception
+     */
+    @Test public void networkTopologyOperationErrorTwo() throws Exception {
+        serviceInstanceId = "serviceInstanceId";
+        NetworkTopologyOperationInput networkTopologyOperation = mock(NetworkTopologyOperationInput.class);
+        ServiceInformation serviceInformation = mock(ServiceInformation.class);
+        doReturn(serviceInstanceId).when(serviceInformation).getServiceInstanceId();
+        doReturn(serviceInformation).when(networkTopologyOperation).getServiceInformation();
+
+        Future<RpcResult<NetworkTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.networkTopologyOperation(networkTopologyOperation);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, null or empty service-instance-id",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>svcLogicClient.hasGraph("VNF-API", SVC_OPERATION, null, "sync") == false</code>
+     *
+     * @throws Exception
+     */
+    @Test public void networkTopologyOperationErrorThree() throws Exception {
+        serviceInstanceId = "serviceInstanceId";
+        NetworkTopologyOperationInput networkTopologyOperationInput = mock(NetworkTopologyOperationInput.class);
+        ServiceInformation serviceInformation = mock(ServiceInformation.class);
+        doReturn(serviceInstanceId).when(serviceInformation).getServiceInstanceId();
+        doReturn(serviceInformation).when(networkTopologyOperationInput).getServiceInformation();
+
+        NetworkRequestInformation networkRequestInformation = mock(NetworkRequestInformation.class);
+        doReturn(networkRequestInformation).when(networkTopologyOperationInput).getNetworkRequestInformation();
+        doReturn("NetworkName").when(networkRequestInformation).getNetworkName();
+
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(SdncRequestHeader.SvcAction.Assign).when(sdncRequestHeader).getSvcAction();
+        doReturn(sdncRequestHeader).when(networkTopologyOperationInput).getSdncRequestHeader();
+
+        Future<RpcResult<NetworkTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.networkTopologyOperation(networkTopologyOperationInput);
+
+        Assert.assertEquals("503", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertTrue(
+            rpcResultFuture.get().getResult().getResponseMessage().contains("No service logic active for VNF-API"));
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Success case
+     *
+     * @throws Exception
+     */
+    @Test public void networkTopologyOperationSuccess() throws Exception {
+        serviceInstanceId = "serviceInstanceId";
+        NetworkTopologyOperationInput networkTopologyOperationInput = mock(NetworkTopologyOperationInput.class);
+        ServiceInformation serviceInformation = mock(ServiceInformation.class);
+        doReturn(serviceInstanceId).when(serviceInformation).getServiceInstanceId();
+        doReturn(serviceInformation).when(networkTopologyOperationInput).getServiceInformation();
+        //mock networkRequestInformation
+        NetworkRequestInformation networkRequestInformation = mock(NetworkRequestInformation.class);
+        doReturn(networkRequestInformation).when(networkTopologyOperationInput).getNetworkRequestInformation();
+        doReturn("NetworkName").when(networkRequestInformation).getNetworkName();
+        //mock sdncRequestHeader
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(SdncRequestHeader.SvcAction.Assign).when(sdncRequestHeader).getSvcAction();
+        doReturn(sdncRequestHeader).when(networkTopologyOperationInput).getSdncRequestHeader();
+        doReturn(true).when(vnfsdnSvcLogicServiceClient).hasGraph(any(), any(), any(), any());
+
+        Future<RpcResult<NetworkTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.networkTopologyOperation(networkTopologyOperationInput);
+
+        Assert.assertEquals("200", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals(null, rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>input.getVnfTopologyInformation() == null</code>
+     *
+     * @throws Exception
+     */
+    @Test public void preloadVnfTopologyOperationErrorOne() throws Exception {
+        PreloadVnfTopologyOperationInput preloadVnfTopologyOperationInput =
+            mock(PreloadVnfTopologyOperationInput.class);
+        doReturn(null).when(preloadVnfTopologyOperationInput).getVnfTopologyInformation();
+
+        Future<RpcResult<PreloadVnfTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadVnfTopologyOperation(preloadVnfTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, null or empty vnf-name and vnf-type",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>preload_name.length() == 0</code>
+     * And
+     * <code>preload_type.length() == 0</code>
+     *
+     * @throws Exception
+     */
+    @Test public void preloadVnfTopologyOperationErrorTwo() throws Exception {
+        // preload_name.length() == 0
+        vnfName = "";
+        vnfType = "vfModuleModelId";
+        PreloadVnfTopologyOperationInput preloadVnfTopologyOperationInput =
+            mock(PreloadVnfTopologyOperationInput.class);
+        doReturn(null).when(preloadVnfTopologyOperationInput).getVnfTopologyInformation();
+
+        VnfTopologyInformation vnfTopologyInformation = mock(VnfTopologyInformation.class);
+        doReturn(vnfTopologyInformation).when(preloadVnfTopologyOperationInput).getVnfTopologyInformation();
+        VnfTopologyIdentifier vnfTopologyIdentifier = mock(VnfTopologyIdentifier.class);
+        doReturn(vnfName).when(vnfTopologyIdentifier).getVnfName();
+        doReturn(vnfType).when(vnfTopologyIdentifier).getVnfType();
+        doReturn(vnfTopologyIdentifier).when(vnfTopologyInformation).getVnfTopologyIdentifier();
+
+        Future<RpcResult<PreloadVnfTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadVnfTopologyOperation(preloadVnfTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, invalid preload-name",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+
+        // preload_type.length() == 0
+        vnfName = "vnfName";
+        vnfType = "";
+        doReturn(vnfName).when(vnfTopologyIdentifier).getVnfName();
+        doReturn(vnfType).when(vnfTopologyIdentifier).getVnfType();
+
+        rpcResultFuture = vnfapiProvider.preloadVnfTopologyOperation(preloadVnfTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, invalid preload-type",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <code>svcLogicClient.hasGraph("VNF-API", SVC_OPERATION, null, "sync") = false</code>
+     *
+     * @throws Exception
+     */
+    @Test public void preloadVnfTopologyOperationErrorThree() throws Exception {
+        // preload_name.length() == 0
+        vnfName = "vnfName";
+        vnfType = "vfModuleModelId";
+        PreloadVnfTopologyOperationInput preloadVnfTopologyOperationInput =
+            mock(PreloadVnfTopologyOperationInput.class);
+        doReturn(null).when(preloadVnfTopologyOperationInput).getVnfTopologyInformation();
+
+        VnfTopologyInformation vnfTopologyInformation = mock(VnfTopologyInformation.class);
+        doReturn(vnfTopologyInformation).when(preloadVnfTopologyOperationInput).getVnfTopologyInformation();
+        VnfTopologyIdentifier vnfTopologyIdentifier = mock(VnfTopologyIdentifier.class);
+        doReturn(vnfName).when(vnfTopologyIdentifier).getVnfName();
+        doReturn(vnfType).when(vnfTopologyIdentifier).getVnfType();
+        doReturn(vnfTopologyIdentifier).when(vnfTopologyInformation).getVnfTopologyIdentifier();
+
+        Future<RpcResult<PreloadVnfTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadVnfTopologyOperation(preloadVnfTopologyOperationInput);
+
+        Assert.assertEquals("503", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertTrue(
+            rpcResultFuture.get().getResult().getResponseMessage().contains("No service logic active for VNF-API"));
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Success case
+     *
+     * @throws Exception
+     */
+    @Test public void preloadVnfTopologyOperationSuccess() throws Exception {
+        // preload_name.length() == 0
+        vnfName = "vnfName";
+        vnfType = "vfModuleModelId";
+        PreloadVnfTopologyOperationInput preloadVnfTopologyOperationInput =
+            mock(PreloadVnfTopologyOperationInput.class);
+        doReturn(null).when(preloadVnfTopologyOperationInput).getVnfTopologyInformation();
+
+        VnfTopologyInformation vnfTopologyInformation = mock(VnfTopologyInformation.class);
+        doReturn(vnfTopologyInformation).when(preloadVnfTopologyOperationInput).getVnfTopologyInformation();
+        VnfTopologyIdentifier vnfTopologyIdentifier = mock(VnfTopologyIdentifier.class);
+        doReturn(vnfName).when(vnfTopologyIdentifier).getVnfName();
+        doReturn(vnfType).when(vnfTopologyIdentifier).getVnfType();
+        doReturn(vnfTopologyIdentifier).when(vnfTopologyInformation).getVnfTopologyIdentifier();
+        doReturn(true).when(vnfsdnSvcLogicServiceClient).hasGraph(any(), any(), any(), any());
+
+        Future<RpcResult<PreloadVnfTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadVnfTopologyOperation(preloadVnfTopologyOperationInput);
+
+        Assert.assertEquals("200", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals(null, rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>input.getVnfInstanceTopologyInformation() == null</code>
+     *
+     * @throws Exception
+     */
+    @Test public void preloadVnfInstanceTopologyOperationErrorOne() throws Exception {
+        PreloadVnfInstanceTopologyOperationInput preloadVnfInstanceTopologyOperationInput =
+            mock(PreloadVnfInstanceTopologyOperationInput.class);
+        doReturn(null).when(preloadVnfInstanceTopologyOperationInput).getVnfInstanceTopologyInformation();
+        Future<RpcResult<PreloadVnfInstanceTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadVnfInstanceTopologyOperation(preloadVnfInstanceTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, null or empty vnf-instance-name and vnf-model-id",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>preload_name = ""</code>
+     * And
+     * <code>preload_type = ""</code>
+     *
+     * @throws Exception
+     */
+    @Test public void preloadVnfInstanceTopologyOperationErrorTwo() throws Exception {
+        // preload_type = ""
+        vnfInstanceName = "vnfInstanceName";
+        vnfModelId = "";
+        PreloadVnfInstanceTopologyOperationInput preloadVnfInstanceTopologyOperationInput =
+            mock(PreloadVnfInstanceTopologyOperationInput.class);
+        VnfInstanceTopologyInformation vnfInstanceTopologyInformation = mock(VnfInstanceTopologyInformation.class);
+        doReturn(vnfInstanceTopologyInformation).when(preloadVnfInstanceTopologyOperationInput)
+            .getVnfInstanceTopologyInformation();
+        VnfInstanceIdentifiers vnfInstanceIdentifiers = mock(VnfInstanceIdentifiers.class);
+        doReturn(vnfInstanceName).when(vnfInstanceIdentifiers).getVnfInstanceName();
+        doReturn(vnfModelId).when(vnfInstanceIdentifiers).getVnfModelId();
+        doReturn(vnfInstanceIdentifiers).when(vnfInstanceTopologyInformation).getVnfInstanceIdentifiers();
+
+        Future<RpcResult<PreloadVnfInstanceTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadVnfInstanceTopologyOperation(preloadVnfInstanceTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, invalid preload-type",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+
+        //preload_name == ""
+        vnfInstanceName = "";
+        vnfModelId = "vnfModelId";
+        doReturn(vnfInstanceName).when(vnfInstanceIdentifiers).getVnfInstanceName();
+        doReturn(vnfModelId).when(vnfInstanceIdentifiers).getVnfModelId();
+
+        rpcResultFuture = vnfapiProvider.preloadVnfInstanceTopologyOperation(preloadVnfInstanceTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, invalid preload-name",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>svcLogicClient.hasGraph("VNF-API", SVC_OPERATION, null, "sync") = false</code>
+     *
+     * @throws Exception
+     */
+    @Test public void preloadVnfInstanceTopologyOperationErrorThree() throws Exception {
+        // preload_type = ""
+        vnfInstanceName = "vnfInstanceName";
+        vnfModelId = "vnfModelId";
+        PreloadVnfInstanceTopologyOperationInput preloadVnfInstanceTopologyOperationInput =
+            mock(PreloadVnfInstanceTopologyOperationInput.class);
+        VnfInstanceTopologyInformation vnfInstanceTopologyInformation = mock(VnfInstanceTopologyInformation.class);
+        doReturn(vnfInstanceTopologyInformation).when(preloadVnfInstanceTopologyOperationInput)
+            .getVnfInstanceTopologyInformation();
+        VnfInstanceIdentifiers vnfInstanceIdentifiers = mock(VnfInstanceIdentifiers.class);
+        doReturn(vnfInstanceName).when(vnfInstanceIdentifiers).getVnfInstanceName();
+        doReturn(vnfModelId).when(vnfInstanceIdentifiers).getVnfModelId();
+        doReturn(vnfInstanceIdentifiers).when(vnfInstanceTopologyInformation).getVnfInstanceIdentifiers();
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(preloadVnfInstanceTopologyOperationInput).getSdncRequestHeader();
+        doReturn(svcRequestId).when(sdncRequestHeader).getSvcRequestId();
+
+        Future<RpcResult<PreloadVnfInstanceTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadVnfInstanceTopologyOperation(preloadVnfInstanceTopologyOperationInput);
+
+        Assert.assertEquals("503", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertTrue(
+            rpcResultFuture.get().getResult().getResponseMessage().contains("No service logic active for VNF-API"));
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Success case
+     *
+     * @throws Exception
+     */
+    @Test public void preloadVnfInstanceTopologyOperationSuccess() throws Exception {
+        // preload_type = ""
+        vnfInstanceName = "vnfInstanceName";
+        vnfModelId = "vnfModelId";
+        PreloadVnfInstanceTopologyOperationInput preloadVnfInstanceTopologyOperationInput =
+            mock(PreloadVnfInstanceTopologyOperationInput.class);
+        VnfInstanceTopologyInformation vnfInstanceTopologyInformation = mock(VnfInstanceTopologyInformation.class);
+        doReturn(vnfInstanceTopologyInformation).when(preloadVnfInstanceTopologyOperationInput)
+            .getVnfInstanceTopologyInformation();
+        VnfInstanceIdentifiers vnfInstanceIdentifiers = mock(VnfInstanceIdentifiers.class);
+        doReturn(vnfInstanceName).when(vnfInstanceIdentifiers).getVnfInstanceName();
+        doReturn(vnfModelId).when(vnfInstanceIdentifiers).getVnfModelId();
+        doReturn(vnfInstanceIdentifiers).when(vnfInstanceTopologyInformation).getVnfInstanceIdentifiers();
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(preloadVnfInstanceTopologyOperationInput).getSdncRequestHeader();
+        doReturn(svcRequestId).when(sdncRequestHeader).getSvcRequestId();
+        doReturn(true).when(vnfsdnSvcLogicServiceClient).hasGraph(any(), any(), any(), any());
+
+        Future<RpcResult<PreloadVnfInstanceTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadVnfInstanceTopologyOperation(preloadVnfInstanceTopologyOperationInput);
+
+        Assert.assertEquals("200", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals(null, rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>input.getVfModuleTopologyInformation() == null</code>
+     *
+     * @throws Exception
+     */
+    @Test public void preloadVfModuleTopologyOperationErrorOne() throws Exception {
+        PreloadVfModuleTopologyOperationInput preloadVnfTopologyOperationInput =
+            mock(PreloadVfModuleTopologyOperationInput.class);
+        doReturn(null).when(preloadVnfTopologyOperationInput).getVfModuleTopologyInformation();
+
+        Future<RpcResult<PreloadVfModuleTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadVfModuleTopologyOperation(preloadVnfTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, null or empty vnf-instance-name and vnf-model-id",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>preload_name = ""</code>
+     * And
+     * <code>preload_type = ""</code>
+     *
+     * @throws Exception
+     */
+    @Test public void preloadVfModuleTopologyOperationErrorTwo() throws Exception {
+        // preload_name = ""
+        vfModuleName = "";
+        vfModuleModelId = "vfModuleModelId";
+        PreloadVfModuleTopologyOperationInput preloadVnfTopologyOperationInput =
+            mock(PreloadVfModuleTopologyOperationInput.class);
+        VfModuleTopologyInformation vfModuleTopologyInformation = mock(VfModuleTopologyInformation.class);
+        doReturn(vfModuleTopologyInformation).when(preloadVnfTopologyOperationInput).getVfModuleTopologyInformation();
+        VfModuleIdentifiers vfModuleIdentifiers = mock(VfModuleIdentifiers.class);
+        doReturn(vfModuleName).when(vfModuleIdentifiers).getVfModuleName();
+        doReturn(vfModuleModelId).when(vfModuleIdentifiers).getVfModuleModelId();
+        doReturn(vfModuleIdentifiers).when(vfModuleTopologyInformation).getVfModuleIdentifiers();
+
+        Future<RpcResult<PreloadVfModuleTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadVfModuleTopologyOperation(preloadVnfTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, invalid preload-name",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+
+        // preload_type = ""
+        vfModuleName = "vfModuleName";
+        vfModuleModelId = "";
+        doReturn(vfModuleName).when(vfModuleIdentifiers).getVfModuleName();
+        doReturn(vfModuleModelId).when(vfModuleIdentifiers).getVfModuleModelId();
+
+        rpcResultFuture = vnfapiProvider.preloadVfModuleTopologyOperation(preloadVnfTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("invalid input, invalid preload-type",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>svcLogicClient.hasGraph("VNF-API", SVC_OPERATION, null, "sync") = false</code>
+     *
+     * @throws Exception
+     */
+    @Test public void preloadVfModuleTopologyOperationErrorThree() throws Exception {
+        // preload_name = ""
+        vfModuleName = "vfModuleName";
+        vfModuleModelId = "vfModuleModelId";
+        PreloadVfModuleTopologyOperationInput preloadVnfTopologyOperationInput =
+            mock(PreloadVfModuleTopologyOperationInput.class);
+        VfModuleTopologyInformation vfModuleTopologyInformation = mock(VfModuleTopologyInformation.class);
+        doReturn(vfModuleTopologyInformation).when(preloadVnfTopologyOperationInput).getVfModuleTopologyInformation();
+        VfModuleIdentifiers vfModuleIdentifiers = mock(VfModuleIdentifiers.class);
+        doReturn(vfModuleName).when(vfModuleIdentifiers).getVfModuleName();
+        doReturn(vfModuleModelId).when(vfModuleIdentifiers).getVfModuleModelId();
+        doReturn(vfModuleIdentifiers).when(vfModuleTopologyInformation).getVfModuleIdentifiers();
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(preloadVnfTopologyOperationInput).getSdncRequestHeader();
+        doReturn(svcRequestId).when(sdncRequestHeader).getSvcRequestId();
+
+        Future<RpcResult<PreloadVfModuleTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadVfModuleTopologyOperation(preloadVnfTopologyOperationInput);
+
+        Assert.assertEquals("503", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertTrue(
+            rpcResultFuture.get().getResult().getResponseMessage().contains("No service logic active for VNF-API"));
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Success case
+     *
+     * @throws Exception
+     */
+    @Test public void preloadVfModuleTopologyOperationSuccess() throws Exception {
+        // preload_name = ""
+        vfModuleName = "vfModuleName";
+        vfModuleModelId = "vfModuleModelId";
+        PreloadVfModuleTopologyOperationInput preloadVnfTopologyOperationInput =
+            mock(PreloadVfModuleTopologyOperationInput.class);
+        VfModuleTopologyInformation vfModuleTopologyInformation = mock(VfModuleTopologyInformation.class);
+        doReturn(vfModuleTopologyInformation).when(preloadVnfTopologyOperationInput).getVfModuleTopologyInformation();
+        VfModuleIdentifiers vfModuleIdentifiers = mock(VfModuleIdentifiers.class);
+        doReturn(vfModuleName).when(vfModuleIdentifiers).getVfModuleName();
+        doReturn(vfModuleModelId).when(vfModuleIdentifiers).getVfModuleModelId();
+        doReturn(vfModuleIdentifiers).when(vfModuleTopologyInformation).getVfModuleIdentifiers();
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(preloadVnfTopologyOperationInput).getSdncRequestHeader();
+        doReturn(svcRequestId).when(sdncRequestHeader).getSvcRequestId();
+        doReturn(true).when(vnfsdnSvcLogicServiceClient).hasGraph(any(), any(), any(), any());
+
+        Future<RpcResult<PreloadVfModuleTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadVfModuleTopologyOperation(preloadVnfTopologyOperationInput);
+
+        Assert.assertEquals("200", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals(null, rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>input.getNetworkTopologyInformation() == null</code>
+     *
+     * @throws Exception
+     */
+    @Test public void preloadNetworkTopologyOperationErrorOne() throws Exception {
+        PreloadNetworkTopologyOperationInput PreloadNetworkTopologyOperationInput =
+            mock(PreloadNetworkTopologyOperationInput.class);
+        doReturn(null).when(PreloadNetworkTopologyOperationInput).getNetworkTopologyInformation();
+
+        Future<RpcResult<PreloadNetworkTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadNetworkTopologyOperation(PreloadNetworkTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("input, null or empty vnf-name and vnf-type",
+            rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>preload_name == ""</code>
+     * ANd
+     * <code>preload_type == ""ss</code>
+     *
+     * @throws Exception
+     */
+    @Test public void preloadNetworkTopologyOperationErrorTwo() throws Exception {
+        String networkName = "";
+        String networkType = "NetworkType";
+        PreloadNetworkTopologyOperationInput PreloadNetworkTopologyOperationInput =
+            mock(PreloadNetworkTopologyOperationInput.class);
+        NetworkTopologyInformation networkTopologyInformation = mock(NetworkTopologyInformation.class);
+        doReturn(networkTopologyInformation).when(PreloadNetworkTopologyOperationInput).getNetworkTopologyInformation();
+        NetworkTopologyIdentifier networkTopologyIdentifier = mock(NetworkTopologyIdentifier.class);
+        doReturn(networkTopologyIdentifier).when(networkTopologyInformation).getNetworkTopologyIdentifier();
+        doReturn(networkName).when(networkTopologyIdentifier).getNetworkName();
+        doReturn(networkType).when(networkTopologyIdentifier).getNetworkType();
+
+        Future<RpcResult<PreloadNetworkTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadNetworkTopologyOperation(PreloadNetworkTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("input, invalid preload-name", rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+
+        networkName = "NetworkName";
+        networkType = "";
+        doReturn(networkName).when(networkTopologyIdentifier).getNetworkName();
+        doReturn(networkType).when(networkTopologyIdentifier).getNetworkType();
+
+        rpcResultFuture = vnfapiProvider.preloadNetworkTopologyOperation(PreloadNetworkTopologyOperationInput);
+
+        Assert.assertEquals("403", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("input, invalid preload-type", rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Error case:
+     * <p>
+     * <code>svcLogicClient.hasGraph("VNF-API",SVC_OPERATION,null,"sync" = false</code>
+     *
+     * @throws Exception
+     */
+    @Test public void preloadNetworkTopologyOperationErrorThree() throws Exception {
+        String networkName = "NetworkName";
+        String networkType = "NetworkType";
+        PreloadNetworkTopologyOperationInput PreloadNetworkTopologyOperationInput =
+            mock(PreloadNetworkTopologyOperationInput.class);
+        NetworkTopologyInformation networkTopologyInformation = mock(NetworkTopologyInformation.class);
+        doReturn(networkTopologyInformation).when(PreloadNetworkTopologyOperationInput).getNetworkTopologyInformation();
+        NetworkTopologyIdentifier networkTopologyIdentifier = mock(NetworkTopologyIdentifier.class);
+        doReturn(networkTopologyIdentifier).when(networkTopologyInformation).getNetworkTopologyIdentifier();
+        doReturn(networkName).when(networkTopologyIdentifier).getNetworkName();
+        doReturn(networkType).when(networkTopologyIdentifier).getNetworkType();
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(PreloadNetworkTopologyOperationInput).getSdncRequestHeader();
+        doReturn(svcRequestId).when(sdncRequestHeader).getSvcRequestId();
+
+        Future<RpcResult<PreloadNetworkTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadNetworkTopologyOperation(PreloadNetworkTopologyOperationInput);
+
+        Assert.assertEquals("503", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertTrue(
+            rpcResultFuture.get().getResult().getResponseMessage().contains("No service logic active for VNF-API"));
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Success case
+     *
+     * @throws Exception
+     */
+    @Test public void preloadNetworkTopologyOperationErrorFour() throws Exception {
+        String networkName = "NetworkName";
+        String networkType = "NetworkType";
+        PreloadNetworkTopologyOperationInput PreloadNetworkTopologyOperationInput =
+            mock(PreloadNetworkTopologyOperationInput.class);
+        NetworkTopologyInformation networkTopologyInformation = mock(NetworkTopologyInformation.class);
+        doReturn(networkTopologyInformation).when(PreloadNetworkTopologyOperationInput).getNetworkTopologyInformation();
+        NetworkTopologyIdentifier networkTopologyIdentifier = mock(NetworkTopologyIdentifier.class);
+        doReturn(networkTopologyIdentifier).when(networkTopologyInformation).getNetworkTopologyIdentifier();
+        doReturn(networkName).when(networkTopologyIdentifier).getNetworkName();
+        doReturn(networkType).when(networkTopologyIdentifier).getNetworkType();
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(PreloadNetworkTopologyOperationInput).getSdncRequestHeader();
+        doReturn(svcRequestId).when(sdncRequestHeader).getSvcRequestId();
+        doReturn(true).when(vnfsdnSvcLogicServiceClient).hasGraph(any(), any(), any(), any());
+        doReturn(null).when(dataBroker).newWriteOnlyTransaction();
+
+        Future<RpcResult<PreloadNetworkTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadNetworkTopologyOperation(PreloadNetworkTopologyOperationInput);
+
+        Assert.assertEquals("500", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals("java.lang.NullPointerException", rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    /**
+     * Test Success case
+     *
+     * @throws Exception
+     */
+    @Test public void preloadNetworkTopologyOperationSuccess() throws Exception {
+        String networkName = "NetworkName";
+        String networkType = "NetworkType";
+        PreloadNetworkTopologyOperationInput PreloadNetworkTopologyOperationInput =
+            mock(PreloadNetworkTopologyOperationInput.class);
+        NetworkTopologyInformation networkTopologyInformation = mock(NetworkTopologyInformation.class);
+        doReturn(networkTopologyInformation).when(PreloadNetworkTopologyOperationInput).getNetworkTopologyInformation();
+        NetworkTopologyIdentifier networkTopologyIdentifier = mock(NetworkTopologyIdentifier.class);
+        doReturn(networkTopologyIdentifier).when(networkTopologyInformation).getNetworkTopologyIdentifier();
+        doReturn(networkName).when(networkTopologyIdentifier).getNetworkName();
+        doReturn(networkType).when(networkTopologyIdentifier).getNetworkType();
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(PreloadNetworkTopologyOperationInput).getSdncRequestHeader();
+        doReturn(svcRequestId).when(sdncRequestHeader).getSvcRequestId();
+        doReturn(true).when(vnfsdnSvcLogicServiceClient).hasGraph(any(), any(), any(), any());
+
+        Future<RpcResult<PreloadNetworkTopologyOperationOutput>> rpcResultFuture =
+            vnfapiProvider.preloadNetworkTopologyOperation(PreloadNetworkTopologyOperationInput);
+
+        Assert.assertEquals("200", rpcResultFuture.get().getResult().getResponseCode());
+        Assert.assertEquals(null, rpcResultFuture.get().getResult().getResponseMessage());
+        Assert.assertEquals("Y", rpcResultFuture.get().getResult().getAckFinalIndicator());
+    }
+
+    @Test public void getVfModuleServiceData() throws Exception {
+        // Three parameters: siid, vfModuleServiceDataBuilder, LogicalDatastoreType
+        String ssid = "ssid";
+        VfModuleServiceDataBuilder vfModuleServiceDataBuilder = spy(new VfModuleServiceDataBuilder());
+        Optional<VfModuleList> optional = mock(Optional.class);
+        doReturn(optional).when(checkedFuture).get();
+        doReturn(true).when(optional).isPresent();
+        VfModuleList vfModuleList = mock(VfModuleList.class);
+        doReturn(vfModuleList).when(optional).get();
+        VfModuleServiceData vfModuleServiceData = mock(VfModuleServiceData.class);
+        doReturn(vfModuleServiceData).when(vfModuleList).getVfModuleServiceData();
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(vfModuleServiceData).getSdncRequestHeader();
+
+        Whitebox.invokeMethod(vnfapiProvider, "getVfModuleServiceData", ssid, vfModuleServiceDataBuilder,
+            LogicalDatastoreType.CONFIGURATION);
+
+        Assert.assertEquals(sdncRequestHeader, vfModuleServiceDataBuilder.getSdncRequestHeader());
+
+        //With Two parameters: siid, vfModuleServiceDataBuilder
+        Whitebox.invokeMethod(vnfapiProvider, "getVfModuleServiceData", ssid, vfModuleServiceDataBuilder);
+
+        Assert.assertEquals(sdncRequestHeader, vfModuleServiceDataBuilder.getSdncRequestHeader());
+    }
+
+    @Test public void getPreloadData() throws Exception {
+        // Four parameters:
+        // String preload_name, String preload_type, PreloadDataBuilder preloadDataBuilder, LogicalDatastoreType type
+        PreloadDataBuilder preloadDataBuilder = spy(new PreloadDataBuilder());
+        // mock optional
+        Optional<VnfPreloadList> optional = mock(Optional.class);
+        doReturn(optional).when(checkedFuture).get();
+        doReturn(true).when(optional).isPresent();
+
+        VnfPreloadList vnfPreloadList = mock(VnfPreloadList.class);
+        doReturn(vnfPreloadList).when(optional).get();
+        PreloadData preloadData = mock(PreloadData.class);
+        doReturn(preloadData).when(vnfPreloadList).getPreloadData();
+
+        VnfTopologyInformation vnfTopologyInformation = mock(VnfTopologyInformation.class);
+        doReturn(vnfTopologyInformation).when(preloadData).getVnfTopologyInformation();
+
+        Whitebox.invokeMethod(vnfapiProvider, "getPreloadData", "preloadName", "preloadType", preloadDataBuilder,
+            LogicalDatastoreType.CONFIGURATION);
+
+        Assert.assertEquals(vnfTopologyInformation, preloadDataBuilder.getVnfTopologyInformation());
+
+        // Three parameters:
+        // String preload_name, String preload_type, PreloadDataBuilder preloadDataBuilder, LogicalDatastoreType type
+        Whitebox.invokeMethod(vnfapiProvider, "getPreloadData", "preloadName", "preloadType", preloadDataBuilder);
+
+        Assert.assertEquals(vnfTopologyInformation, preloadDataBuilder.getVnfTopologyInformation());
+    }
+
+    @Test public void getVnfInstancePreloadData() throws Exception {
+        // Four parameters:
+        // String preload_name, String preload_type, VnfInstancePreloadDataBuilder preloadDataBuilder,
+        // LogicalDatastoreType type
+        VnfInstancePreloadDataBuilder vnfInstancePreloadDataBuilder = spy(new VnfInstancePreloadDataBuilder());
+        // mock optional
+        Optional<VnfPreloadList> optional = mock(Optional.class);
+        doReturn(optional).when(checkedFuture).get();
+        doReturn(true).when(optional).isPresent();
+        VnfInstancePreloadList vnfInstancePreloadList = mock(VnfInstancePreloadList.class);
+        doReturn(vnfInstancePreloadList).when(optional).get();
+        VnfInstancePreloadData vnfInstancePreloadData = mock(VnfInstancePreloadData.class);
+        doReturn(vnfInstancePreloadData).when(vnfInstancePreloadList).getVnfInstancePreloadData();
+        VnfInstanceTopologyInformation vnfInstanceTopologyInformation = mock(VnfInstanceTopologyInformation.class);
+        doReturn(vnfInstanceTopologyInformation).when(vnfInstancePreloadData).getVnfInstanceTopologyInformation();
+
+        Whitebox.invokeMethod(vnfapiProvider, "getVnfInstancePreloadData", "preloadName", "preloadType",
+            vnfInstancePreloadDataBuilder, LogicalDatastoreType.CONFIGURATION);
+
+        Assert.assertEquals(vnfInstanceTopologyInformation,
+            vnfInstancePreloadDataBuilder.getVnfInstanceTopologyInformation());
+
+        // Three Parameters:
+        // String preload_name, String preload_type, VnfInstancePreloadDataBuilder preloadDataBuilder
+        Whitebox.invokeMethod(vnfapiProvider, "getVnfInstancePreloadData", "preloadName", "preloadType",
+            vnfInstancePreloadDataBuilder);
+
+        Assert.assertEquals(vnfInstanceTopologyInformation,
+            vnfInstancePreloadDataBuilder.getVnfInstanceTopologyInformation());
+    }
+
+    @Test public void getVfModulePreloadData() throws Exception {
+        // Four Parameters
+        // String preload_name, String preload_type, VfModulePreloadDataBuilder preloadDataBuilder,
+        // LogicalDatastoreType type
+        VfModulePreloadDataBuilder vfModulePreloadDataBuilder = spy(new VfModulePreloadDataBuilder());
+        // mock optional
+        Optional<VfModulePreloadList> optional = mock(Optional.class);
+        doReturn(optional).when(checkedFuture).get();
+        doReturn(true).when(optional).isPresent();
+        VfModulePreloadList vfModulePreloadList = mock(VfModulePreloadList.class);
+        doReturn(vfModulePreloadList).when(optional).get();
+        VfModulePreloadData vfModulePreloadData = mock(VfModulePreloadData.class);
+        doReturn(vfModulePreloadData).when(vfModulePreloadList).getVfModulePreloadData();
+        VfModuleTopologyInformation vfModuleTopologyInformation = mock(VfModuleTopologyInformation.class);
+        doReturn(vfModuleTopologyInformation).when(vfModulePreloadData).getVfModuleTopologyInformation();
+
+        Whitebox.invokeMethod(vnfapiProvider, "getVfModulePreloadData", "preloadName", "preloadType",
+            vfModulePreloadDataBuilder, LogicalDatastoreType.CONFIGURATION);
+
+        Assert.assertEquals(vfModuleTopologyInformation, vfModulePreloadDataBuilder.getVfModuleTopologyInformation());
+
+        // Three Parameters:
+        // String vnf_name, String vnf_type, VfModulePreloadDataBuilder preloadDataBuilder
+        Whitebox.invokeMethod(vnfapiProvider, "getVfModulePreloadData", "preloadName", "preloadType",
+            vfModulePreloadDataBuilder);
+
+        Assert.assertEquals(vfModuleTopologyInformation, vfModulePreloadDataBuilder.getVfModuleTopologyInformation());
+    }
+
+    /**
+     * With ServiceStatusBuilder, RequestInformation
+     */
+    @Test public void setServiceStatusOne() throws Exception {
+        // VNFActivateRequest
+        RequestInformation requestInformation = mock(RequestInformation.class);
+        ServiceStatusBuilder serviceStatusBuilder = spy(new ServiceStatusBuilder());
+        doReturn(RequestInformation.RequestAction.VNFActivateRequest).when(requestInformation).getRequestAction();
+        doReturn(RequestInformation.RequestSubAction.SUPP).when(requestInformation).getRequestSubAction();
+        Whitebox.invokeMethod(vnfapiProvider, "setServiceStatus", serviceStatusBuilder, requestInformation);
+        Assert.assertEquals(ServiceStatus.VnfsdnAction.VNFActivateRequest, serviceStatusBuilder.getVnfsdnAction());
+
+        //ChangeVNFActivateRequest
+        doReturn(RequestInformation.RequestAction.ChangeVNFActivateRequest).when(requestInformation).getRequestAction();
+        doReturn(RequestInformation.RequestSubAction.CANCEL).when(requestInformation).getRequestSubAction();
+        Whitebox.invokeMethod(vnfapiProvider, "setServiceStatus", serviceStatusBuilder, requestInformation);
+        Assert
+            .assertEquals(ServiceStatus.VnfsdnAction.ChangeVNFActivateRequest, serviceStatusBuilder.getVnfsdnAction());
+
+        //DisconnectVNFRequest
+        doReturn(RequestInformation.RequestAction.DisconnectVNFRequest).when(requestInformation).getRequestAction();
+        Whitebox.invokeMethod(vnfapiProvider, "setServiceStatus", serviceStatusBuilder, requestInformation);
+        Assert.assertEquals(ServiceStatus.VnfsdnAction.DisconnectVNFRequest, serviceStatusBuilder.getVnfsdnAction());
+
+        //PreloadVNFRequest
+        doReturn(RequestInformation.RequestAction.PreloadVNFRequest).when(requestInformation).getRequestAction();
+        Whitebox.invokeMethod(vnfapiProvider, "setServiceStatus", serviceStatusBuilder, requestInformation);
+        Assert.assertEquals(ServiceStatus.VnfsdnAction.PreloadVNFRequest, serviceStatusBuilder.getVnfsdnAction());
+
+        //DeletePreloadVNFRequest
+        doReturn(RequestInformation.RequestAction.DeletePreloadVNFRequest).when(requestInformation).getRequestAction();
+        Whitebox.invokeMethod(vnfapiProvider, "setServiceStatus", serviceStatusBuilder, requestInformation);
+        Assert.assertEquals(ServiceStatus.VnfsdnAction.DeletePreloadVNFRequest, serviceStatusBuilder.getVnfsdnAction());
+
+        //VnfInstanceActivateRequest
+        doReturn(RequestInformation.RequestAction.VnfInstanceActivateRequest).when(requestInformation)
+            .getRequestAction();
+        Whitebox.invokeMethod(vnfapiProvider, "setServiceStatus", serviceStatusBuilder, requestInformation);
+        Assert.assertEquals(ServiceStatus.VnfsdnAction.VnfInstanceActivateRequest,
+            serviceStatusBuilder.getVnfsdnAction());
+
+        //ChangeVnfInstanceActivateRequest
+        doReturn(RequestInformation.RequestAction.ChangeVnfInstanceActivateRequest).when(requestInformation)
+            .getRequestAction();
+        Whitebox.invokeMethod(vnfapiProvider, "setServiceStatus", serviceStatusBuilder, requestInformation);
+        Assert.assertEquals(ServiceStatus.VnfsdnAction.ChangeVnfInstanceActivateRequest,
+            serviceStatusBuilder.getVnfsdnAction());
+
+        //DisconnectVnfInstanceRequest
+        doReturn(RequestInformation.RequestAction.DisconnectVnfInstanceRequest).when(requestInformation)
+            .getRequestAction();
+        Whitebox.invokeMethod(vnfapiProvider, "setServiceStatus", serviceStatusBuilder, requestInformation);
+        Assert.assertEquals(ServiceStatus.VnfsdnAction.DisconnectVnfInstanceRequest,
+            serviceStatusBuilder.getVnfsdnAction());
+
+        //PreloadVnfInstanceRequest
+        doReturn(RequestInformation.RequestAction.PreloadVnfInstanceRequest).when(requestInformation)
+            .getRequestAction();
+        Whitebox.invokeMethod(vnfapiProvider, "setServiceStatus", serviceStatusBuilder, requestInformation);
+        Assert
+            .assertEquals(ServiceStatus.VnfsdnAction.PreloadVnfInstanceRequest, serviceStatusBuilder.getVnfsdnAction());
+
+        //VfModuleActivateRequest
+        doReturn(RequestInformation.RequestAction.VfModuleActivateRequest).when(requestInformation).getRequestAction();
+        Whitebox.invokeMethod(vnfapiProvider, "setServiceStatus", serviceStatusBuilder, requestInformation);
+        Assert.assertEquals(ServiceStatus.VnfsdnAction.VfModuleActivateRequest, serviceStatusBuilder.getVnfsdnAction());
+
+        //ChangeVfModuleActivateRequest
+        doReturn(RequestInformation.RequestAction.ChangeVfModuleActivateRequest).when(requestInformation)
+            .getRequestAction();
+        Whitebox.invokeMethod(vnfapiProvider, "setServiceStatus", serviceStatusBuilder, requestInformation);
+        Assert.assertEquals(ServiceStatus.VnfsdnAction.ChangeVfModuleActivateRequest,
+            serviceStatusBuilder.getVnfsdnAction());
+
+        //DisconnectVfModuleRequest
+        doReturn(RequestInformation.RequestAction.DisconnectVfModuleRequest).when(requestInformation)
+            .getRequestAction();
+        Whitebox.invokeMethod(vnfapiProvider, "setServiceStatus", serviceStatusBuilder, requestInformation);
+        Assert
+            .assertEquals(ServiceStatus.VnfsdnAction.DisconnectVfModuleRequest, serviceStatusBuilder.getVnfsdnAction());
+
+        //PreloadVfModuleRequest
+        doReturn(RequestInformation.RequestAction.PreloadVfModuleRequest).when(requestInformation).getRequestAction();
+        Whitebox.invokeMethod(vnfapiProvider, "setServiceStatus", serviceStatusBuilder, requestInformation);
+        Assert.assertEquals(ServiceStatus.VnfsdnAction.PreloadVfModuleRequest, serviceStatusBuilder.getVnfsdnAction());
+    }
+
+    @Test public void getServiceData() throws Exception {
+        ServiceDataBuilder serviceDataBuilder = spy(new ServiceDataBuilder());
+        // mock optional
+        Optional<VnfList> optional = mock(Optional.class);
+        doReturn(optional).when(checkedFuture).get();
+        doReturn(true).when(optional).isPresent();
+        VnfList vnfList = mock(VnfList.class);
+        doReturn(vnfList).when(optional).get();
+        ServiceData serviceData = mock(ServiceData.class);
+        doReturn(serviceData).when(vnfList).getServiceData();
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(serviceData).getSdncRequestHeader();
+
+        Whitebox.invokeMethod(vnfapiProvider, "getServiceData", "siid", serviceDataBuilder,
+            LogicalDatastoreType.CONFIGURATION);
+
+        Assert.assertEquals(sdncRequestHeader, serviceDataBuilder.getSdncRequestHeader());
+    }
+
+    @Test public void getVnfInstanceServiceData() throws Exception {
+        VnfInstanceServiceDataBuilder vnfInstanceServiceDataBuilder = spy(new VnfInstanceServiceDataBuilder());
+        // mock optional
+        Optional<VnfList> optional = mock(Optional.class);
+        doReturn(optional).when(checkedFuture).get();
+        doReturn(true).when(optional).isPresent();
+        VnfInstanceList vnfInstanceList = mock(VnfInstanceList.class);
+        doReturn(vnfInstanceList).when(optional).get();
+        VnfInstanceServiceData vnfInstanceServiceData = mock(VnfInstanceServiceData.class);
+        doReturn(vnfInstanceServiceData).when(vnfInstanceList).getVnfInstanceServiceData();
+        SdncRequestHeader sdncRequestHeader = mock(SdncRequestHeader.class);
+        doReturn(sdncRequestHeader).when(vnfInstanceServiceData).getSdncRequestHeader();
+
+        Whitebox.invokeMethod(vnfapiProvider, "getVnfInstanceServiceData", "siid", vnfInstanceServiceDataBuilder,
+            LogicalDatastoreType.CONFIGURATION);
+
+        Assert.assertEquals(sdncRequestHeader, vnfInstanceServiceDataBuilder.getSdncRequestHeader());
+    }
+
+    @Test public void DeleteVnfList() throws Exception {
+        LogicalDatastoreType configuration = LogicalDatastoreType.CONFIGURATION;
+        VnfList vnfList = mock(VnfList.class);
+        VnfListKey vnfListKey = mock(VnfListKey.class);
+        doReturn(vnfListKey).when(vnfList).getKey();
+        InstanceIdentifier<VnfList> vnfListInstanceIdentifier = mock(InstanceIdentifier.class);
+        dataBroker.newWriteOnlyTransaction().put(configuration, vnfListInstanceIdentifier, vnfList);
+
+        Whitebox.invokeMethod(vnfapiProvider, "DeleteVnfList", vnfList, configuration);
+
+        verify(dataBroker, times(2)).newWriteOnlyTransaction();
+    }
+}