/*
 * Copyright (c) 2016 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */

package org.opendaylight.vpnservice.test;

import com.google.common.base.Optional;
import com.google.common.util.concurrent.Futures;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;
import org.opendaylight.bgpmanager.api.IBgpManager;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker;
import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
import org.opendaylight.vpnservice.VpnInterfaceManager;
import org.opendaylight.vpnservice.VpnSubnetRouteHandler;
import org.opendaylight.vpnservice.interfacemgr.globals.IfmConstants;
import org.opendaylight.vpnservice.utilities.InterfaceUtils;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana._if.type.rev140508.L2vlan;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddressBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.InterfaceKey;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.PortOpData;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.PortOpDataBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.SubnetOpData;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.RdToElanOp;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.VpnInstanceToVpnId;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.TaskState;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.port.op.data.PortOpDataEntry;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.port.op.data.PortOpDataEntryBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.port.op.data.PortOpDataEntryKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.rd.to.elan.op.RdToElanOpEntry;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.rd.to.elan.op.RdToElanOpEntryBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.rd.to.elan.op.RdToElanOpEntryKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.subnet.op.data.SubnetOpDataEntry;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.subnet.op.data.SubnetOpDataEntryBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.subnet.op.data.SubnetOpDataEntryKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.subnet.op.data.subnet.op.data.entry.SubnetToDpn;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.subnet.op.data.subnet.op.data.entry.SubnetToDpnBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.subnet.op.data.subnet.op.data.entry.SubnetToDpnKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.subnet.op.data.subnet.op.data.entry.subnet.to.dpn.VpnInterfaces;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.subnet.op.data.subnet.op.data.entry.subnet.to.dpn.VpnInterfacesBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.subnet.op.data.subnet.op.data.entry.subnet.to.dpn.VpnInterfacesKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstanceBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstanceKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.idmanager.rev150403.AllocateIdInput;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.idmanager.rev150403.AllocateIdInputBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.idmanager.rev150403.AllocateIdOutput;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.idmanager.rev150403.AllocateIdOutputBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.idmanager.rev150403.IdManagerService;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.DpnEndpoints;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.dpn.endpoints.DPNTEPsInfo;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.dpn.endpoints.DPNTEPsInfoBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.dpn.endpoints.DPNTEPsInfoKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.dpn.endpoints.dpn.teps.info.TunnelEndPoints;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.dpn.endpoints.dpn.teps.info.TunnelEndPointsBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.PortAddedToSubnet;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.PortRemovedFromSubnet;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.PortAddedToSubnetBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.PortRemovedFromSubnetBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.SubnetAddedToVpn;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.SubnetUpdatedInVpn;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.SubnetDeletedFromVpn;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.SubnetAddedToVpnBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.SubnetUpdatedInVpnBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.SubnetDeletedFromVpnBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.Subnetmaps;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.subnetmaps.Subnetmap;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.subnetmaps.SubnetmapBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.subnetmaps.SubnetmapKey;
import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.opendaylight.yangtools.yang.common.RpcResult;
import org.opendaylight.yangtools.yang.common.RpcResultBuilder;

import java.math.BigInteger;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Future;

import static org.mockito.Matchers.any;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

@RunWith(MockitoJUnitRunner.class)
public class VpnSubnetRouteHandlerTest {

    BigInteger dpId = BigInteger.valueOf(1);
    PortAddedToSubnet portAddedToSubnet = null;
    PortRemovedFromSubnet portRemovedFromSubnet = null;
    SubnetAddedToVpn subnetAddedToVpn = null;
    SubnetUpdatedInVpn subnetUpdatedInVpn = null;
    SubnetDeletedFromVpn subnetDeletedFromVpn = null;
    SubnetToDpn subnetToDpn = null;
    RdToElanOpEntry rdToElanOpEntry = null;
    String subnetIp = "10.1.1.24";
    String nexthopIp = null;
    String poolName = null;
    String interfaceName = "VPN";
    Uuid subnetId = Uuid.getDefaultInstance("067e6162-3b6f-4ae2-a171-2470b63dff00");
    Uuid portId = Uuid.getDefaultInstance("54947df8-0e9e-4471-a2f9-9af509fb5889");
    Uuid tenantId = Uuid.getDefaultInstance("54947df8-0e9e-4571-a2f9-9af509fb5889");
    String portKey = portId.getValue();
    Long elanTag = null;
    Long longId = null;
    PortOpDataEntry portOp = null;
    PortOpData portOpData = null;
    SubnetOpDataEntry subnetOp = null;
    org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface
            stateInterface;
    List<String> lowerLayerIfList = new ArrayList<>();
    NodeConnectorId nodeConnectorId = null;
    VpnInterfaces vpnIntfaces = null;
    VpnInstance vpnInstance = null;
    Subnetmap subnetmap = null;
    DPNTEPsInfo dpntePsInfo = null;
    TunnelEndPoints tunlEndPts = null;
    IpAddress ipAddress = null;
    String idKey = null;
    AllocateIdOutput allocateIdOutput = null;
    AllocateIdInput allocateIdInput = null;

    InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces
            .state.Interface> ifStateId = InterfaceUtils.buildStateInterfaceId(portKey);
    InstanceIdentifier<SubnetOpDataEntry> subOpIdentifier = InstanceIdentifier.builder(SubnetOpData.class).
            child(SubnetOpDataEntry.class, new SubnetOpDataEntryKey(subnetId)).build();
    InstanceIdentifier<SubnetToDpn> dpnOpId = subOpIdentifier.child(SubnetToDpn.class, new SubnetToDpnKey(dpId));
    InstanceIdentifier<DPNTEPsInfo> tunnelInfoId =
            InstanceIdentifier.builder(DpnEndpoints.class).child(DPNTEPsInfo.class, new DPNTEPsInfoKey(dpId)).build();
    InstanceIdentifier<PortOpDataEntry> portOpIdentifier = InstanceIdentifier.builder(PortOpData.class).
            child(PortOpDataEntry.class, new PortOpDataEntryKey(portKey)).build();
    InstanceIdentifier<PortOpDataEntry> instPortOp = InstanceIdentifier.builder(PortOpData.class).
            child(PortOpDataEntry.class, new PortOpDataEntryKey(interfaceName)).build();
    InstanceIdentifier<Subnetmap> subMapid = InstanceIdentifier.builder(Subnetmaps.class).child(Subnetmap.class, new
            SubnetmapKey(subnetId)).build();
    InstanceIdentifier<PortOpData> portOpIdentifr = InstanceIdentifier.builder(PortOpData.class).build();
    InstanceIdentifier<RdToElanOpEntry> rdIdentifier = InstanceIdentifier.builder(RdToElanOp.class).
            child(RdToElanOpEntry.class, new RdToElanOpEntryKey(interfaceName, subnetIp)).build();
    InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.to.vpn.id
            .VpnInstance> instVpnInstance = getVpnInstanceToVpnIdIdentifier(interfaceName);

    @Mock DataBroker dataBroker;
    @Mock ListenerRegistration<DataChangeListener> dataChangeListenerRegistration;
    @Mock ReadOnlyTransaction mockReadTx;
    @Mock WriteTransaction mockWriteTx;
    @Mock IBgpManager bgpManager;
    @Mock VpnInterfaceManager vpnInterfaceManager;
    @Mock IdManagerService idManager;

    VpnSubnetRouteHandler vpnSubnetRouteHandler;

    Optional<Interface> optionalIfState;
    Optional<SubnetOpDataEntry> optionalSubs;
    Optional<SubnetToDpn> optionalSubDpn;
    Optional<DPNTEPsInfo> optionalTunnelInfo;
    Optional<PortOpDataEntry> optionalPortOp;
    Optional<PortOpData> optionalPtOp;
    Optional<Subnetmap> optionalSubnetMap;
    Optional<RdToElanOpEntry> optionalRd;
    Optional<org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance>
            optionalVpnInstnce;

    @Before
    public void setUp() throws Exception {
        when(dataBroker.registerDataChangeListener(
                any(LogicalDatastoreType.class),
                any(InstanceIdentifier.class),
                any(DataChangeListener.class),
                any(AsyncDataBroker.DataChangeScope.class)))
                .thenReturn(dataChangeListenerRegistration);
        setupMocks();

        vpnSubnetRouteHandler = new VpnSubnetRouteHandler(dataBroker, bgpManager, vpnInterfaceManager);
        vpnSubnetRouteHandler.setIdManager(idManager);
        Future<RpcResult<AllocateIdOutput>> idOutputOptional = RpcResultBuilder.success(allocateIdOutput).buildFuture();

        optionalIfState = Optional.of(stateInterface);
        optionalSubs = Optional.of(subnetOp);
        optionalSubDpn = Optional.of(subnetToDpn);
        optionalTunnelInfo = Optional.of(dpntePsInfo);
        optionalPortOp = Optional.of(portOp);
        optionalPtOp = Optional.of(portOpData);
        optionalSubnetMap = Optional.of(subnetmap);
        optionalRd = Optional.of(rdToElanOpEntry);
        optionalVpnInstnce = Optional.of(vpnInstance);

        doReturn(Futures.immediateCheckedFuture(optionalRd)).when(mockReadTx).read(LogicalDatastoreType.OPERATIONAL,
                rdIdentifier);
        doReturn(Futures.immediateCheckedFuture(optionalIfState)).when(mockReadTx).read(LogicalDatastoreType
                .OPERATIONAL, ifStateId);
        doReturn(Futures.immediateCheckedFuture(optionalSubs)).when(mockReadTx).read(LogicalDatastoreType
                .OPERATIONAL, subOpIdentifier);
        doReturn(Futures.immediateCheckedFuture(optionalSubDpn)).when(mockReadTx).read(LogicalDatastoreType
                .OPERATIONAL, dpnOpId);
        doReturn(Futures.immediateCheckedFuture(optionalTunnelInfo)).when(mockReadTx).read(LogicalDatastoreType
                .CONFIGURATION, tunnelInfoId);
        doReturn(Futures.immediateCheckedFuture(optionalPortOp)).when(mockReadTx).read(LogicalDatastoreType
                .OPERATIONAL, portOpIdentifier);
        doReturn(Futures.immediateCheckedFuture(optionalPtOp)).when(mockReadTx).read(LogicalDatastoreType
                .OPERATIONAL, portOpIdentifr);
        doReturn(Futures.immediateCheckedFuture(optionalPortOp)).when(mockReadTx).read(LogicalDatastoreType
                .OPERATIONAL, instPortOp);
        doReturn(Futures.immediateCheckedFuture(optionalSubnetMap)).when(mockReadTx).read(LogicalDatastoreType
                .CONFIGURATION, subMapid);
        doReturn(Futures.immediateCheckedFuture(optionalVpnInstnce)).when(mockReadTx).read(LogicalDatastoreType
                .CONFIGURATION, instVpnInstance);
        doReturn(idOutputOptional).when(idManager).allocateId(allocateIdInput);
    }

    private void setupMocks() {

        nexthopIp = "10.1.1.25";
        idKey = "VPN.10.1.1.24";
        poolName = "vpnservices";
        elanTag = Long.valueOf(2);
        longId = Long.valueOf("100");
        nodeConnectorId = buildNodeConnectorId(dpId, Long.valueOf(2));
        ipAddress = IpAddressBuilder.getDefaultInstance(nexthopIp);
        vpnIntfaces = new VpnInterfacesBuilder().setInterfaceName(interfaceName).setKey(new VpnInterfacesKey
                (interfaceName)).build();
        List<VpnInterfaces> vpnInterfaces = new ArrayList<>();
        List<SubnetToDpn> subToDpn = new ArrayList<>();
        List<Uuid> portList = new ArrayList<>();
        List<PortOpDataEntry> listPortOpDataEntry = new ArrayList<>();
        List<TunnelEndPoints> tunnelEndPoints = new ArrayList<>();
        vpnInterfaces.add(vpnIntfaces);
        lowerLayerIfList.add(nodeConnectorId.getValue());
        portOp = new PortOpDataEntryBuilder().setDpnId(dpId).setKey(new PortOpDataEntryKey(tenantId.getValue()))
                .setSubnetId(subnetId).setPortId(tenantId.getValue()).build();
        subnetToDpn = new SubnetToDpnBuilder().setDpnId(dpId).setKey(new SubnetToDpnKey(dpId)).setVpnInterfaces
                (vpnInterfaces).build();
        allocateIdOutput = new AllocateIdOutputBuilder().setIdValue(longId).build();
        allocateIdInput = new AllocateIdInputBuilder().setPoolName(poolName).setIdKey(idKey).build();
        subToDpn.add(subnetToDpn);
        portList.add(portId);
        listPortOpDataEntry.add(portOp);
        org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state
                .InterfaceBuilder ifaceBuilder = new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf
                .interfaces.rev140508.interfaces.state.InterfaceBuilder();
        ifaceBuilder.setLowerLayerIf(lowerLayerIfList).setType(L2vlan.class)
                .setAdminStatus(org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508
                        .interfaces.state.Interface.AdminStatus.Up).setOperStatus(Interface.OperStatus.Up)
                .setIfIndex(100).setKey(new InterfaceKey(interfaceName)).setName(interfaceName)
                .setPhysAddress(org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715
                        .PhysAddress.getDefaultInstance("AA:AA:AA:AA:AA:AA"));
        stateInterface = ifaceBuilder.build();
        portAddedToSubnet = new PortAddedToSubnetBuilder().setSubnetIp(subnetIp).setPortId(portId).setSubnetId
                (subnetId).setElanTag(elanTag).build();
        portRemovedFromSubnet = new PortRemovedFromSubnetBuilder().setPortId(portId).setSubnetId(subnetId)
                .setSubnetIp(subnetIp).setElanTag(elanTag).build();
        subnetAddedToVpn = new SubnetAddedToVpnBuilder().setElanTag(elanTag).setSubnetId(subnetId).setVpnName
                (interfaceName).setExternalVpn(true).setSubnetIp(subnetIp).build();
        subnetUpdatedInVpn = new SubnetUpdatedInVpnBuilder().setElanTag(elanTag).setSubnetIp(subnetIp).setSubnetId
                (subnetId).setVpnName(interfaceName).setExternalVpn(false).build();
        subnetDeletedFromVpn = new SubnetDeletedFromVpnBuilder().setExternalVpn(true).setSubnetId(subnetId)
                .setSubnetIp(subnetIp).setVpnName(interfaceName).setElanTag(elanTag).build();
        subnetOp = new SubnetOpDataEntryBuilder().setElanTag(elanTag).setNhDpnId(dpId).setSubnetCidr(subnetIp)
                .setSubnetId(subnetId).setKey(new SubnetOpDataEntryKey(subnetId)).setVpnName(interfaceName)
                .setVrfId(interfaceName).setSubnetToDpn(subToDpn).setRouteAdvState(TaskState.Done).build();
        vpnInstance = new VpnInstanceBuilder().setVpnId(elanTag).setVpnInstanceName(interfaceName).setVrfId
                (interfaceName).setKey(new VpnInstanceKey(interfaceName)).build();
        subnetmap = new SubnetmapBuilder().setSubnetIp(subnetIp).setId(subnetId).setNetworkId(portId).setKey(new
                SubnetmapKey(subnetId)).setRouterId(portId).setVpnId(subnetId)
                .setTenantId(tenantId).setPortList(portList).build();
        portOpData = new PortOpDataBuilder().setPortOpDataEntry(listPortOpDataEntry).build();
        dpntePsInfo = new DPNTEPsInfoBuilder().setDPNID(dpId).setUp(true).setKey(new DPNTEPsInfoKey(dpId))
                .setTunnelEndPoints(tunnelEndPoints).build();
        tunlEndPts = new TunnelEndPointsBuilder().setInterfaceName(interfaceName).setVLANID(10).setIpAddress
                (ipAddress).build();
        tunnelEndPoints.add(tunlEndPts);
        rdToElanOpEntry = new RdToElanOpEntryBuilder().setElanTag(elanTag).setRd(interfaceName).setVpnName
                (interfaceName).setNextHopIp(nexthopIp)
                .setKey(new RdToElanOpEntryKey(interfaceName, subnetIp)).setSubnetIp(subnetIp).build();
        doReturn(mockReadTx).when(dataBroker).newReadOnlyTransaction();
        doReturn(mockWriteTx).when(dataBroker).newWriteOnlyTransaction();
        doReturn(Futures.immediateCheckedFuture(null)).when(mockWriteTx).submit();

    }

    @Test
    public void testOnPortAddedToSubnet() {

        vpnSubnetRouteHandler.onPortAddedToSubnet(portAddedToSubnet);

        verify(mockWriteTx).put(LogicalDatastoreType.OPERATIONAL, portOpIdentifier, portOp, true);
        verify(mockWriteTx).put(LogicalDatastoreType.OPERATIONAL, dpnOpId, subnetToDpn, true);
        verify(mockWriteTx).put(LogicalDatastoreType.OPERATIONAL, subOpIdentifier, subnetOp, true);
    }

    @Test
    public void testOnPortRemovedFromSubnet() {

        vpnSubnetRouteHandler.onPortRemovedFromSubnet(portRemovedFromSubnet);

        verify(mockWriteTx).delete(LogicalDatastoreType.OPERATIONAL, portOpIdentifier);
        verify(mockWriteTx).put(LogicalDatastoreType.OPERATIONAL, dpnOpId, subnetToDpn, true);
        verify(mockWriteTx).put(LogicalDatastoreType.OPERATIONAL, subOpIdentifier, subnetOp, true);

    }

    @Test
    public void testOnInterfaceUp() {

        vpnSubnetRouteHandler.onInterfaceUp(stateInterface);

        verify(mockWriteTx).put(LogicalDatastoreType.OPERATIONAL, instPortOp, portOp, true);
        verify(mockWriteTx).put(LogicalDatastoreType.OPERATIONAL, dpnOpId, subnetToDpn, true);
        verify(mockWriteTx).put(LogicalDatastoreType.OPERATIONAL, subOpIdentifier, subnetOp, true);
    }

    @Test
    public void testOnInterfaceDown() {

        vpnSubnetRouteHandler.onInterfaceDown(stateInterface);

        verify(mockWriteTx).delete(LogicalDatastoreType.OPERATIONAL, dpnOpId);
        verify(mockWriteTx).put(LogicalDatastoreType.OPERATIONAL, subOpIdentifier, subnetOp, true);

    }

    @Test
    public void testOnSubnetAddedToVpn() {

        doReturn(Futures.immediateCheckedFuture(Optional.absent())).when(mockReadTx).read(LogicalDatastoreType
                .OPERATIONAL, subOpIdentifier);

        vpnSubnetRouteHandler.onSubnetAddedToVpn(subnetAddedToVpn);

        verify(mockWriteTx).put(LogicalDatastoreType.OPERATIONAL, dpnOpId, subnetToDpn, true);
        verify(mockWriteTx).put(LogicalDatastoreType.OPERATIONAL, portOpIdentifier, portOp, true);
        verify(mockWriteTx).put(LogicalDatastoreType.OPERATIONAL, subOpIdentifier, subnetOp, true);


    }

    @Test
    public void testOnSubnetUpdatedInVpn() {

        vpnSubnetRouteHandler.onSubnetUpdatedInVpn(subnetUpdatedInVpn);

        verify(mockWriteTx).delete(LogicalDatastoreType.OPERATIONAL, instPortOp);
        verify(mockWriteTx).delete(LogicalDatastoreType.OPERATIONAL, subOpIdentifier);

    }

    @Test
    public void testOnSubnetDeletedFromVpn() {

        vpnSubnetRouteHandler.onSubnetDeletedFromVpn(subnetDeletedFromVpn);

        verify(mockWriteTx).delete(LogicalDatastoreType.OPERATIONAL, instPortOp);
        verify(mockWriteTx).delete(LogicalDatastoreType.OPERATIONAL, subOpIdentifier);

    }

    public static NodeConnectorId buildNodeConnectorId(BigInteger dpn, long portNo) {
        return new NodeConnectorId(buildNodeConnectorString(dpn, portNo));
    }

    public static String buildNodeConnectorString(BigInteger dpn, long portNo) {
        return new StringBuffer().append(IfmConstants.OF_URI_PREFIX).append(dpn)
                .append(IfmConstants.OF_URI_SEPARATOR).append(portNo).toString();
    }

    public static InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.to
            .vpn.id.VpnInstance> getVpnInstanceToVpnIdIdentifier(String vpnName) {
        return InstanceIdentifier.builder(VpnInstanceToVpnId.class).child(org.opendaylight.yang.gen.v1.urn
                .opendaylight.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance.class,
                        new org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstanceKey(vpnName)).build();
    }

}