Refactor to separate api from implementation

Change-Id: Ia3ff3eab719cd380f502d359367e65835693ce12
diff --git a/app/src/test/java/org/opencord/cordmcast/impl/McastTest.java b/app/src/test/java/org/opencord/cordmcast/impl/McastTest.java
new file mode 100644
index 0000000..a622e6d
--- /dev/null
+++ b/app/src/test/java/org/opencord/cordmcast/impl/McastTest.java
@@ -0,0 +1,395 @@
+/*
+ * Copyright 2016-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.opencord.cordmcast.impl;
+
+import static org.easymock.EasyMock.expect;
+import static org.easymock.EasyMock.replay;
+
+import org.easymock.EasyMock;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.junit.TestUtils;
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.VlanId;
+import org.onosproject.cfg.ComponentConfigAdapter;
+import org.onosproject.cfg.ComponentConfigService;
+import org.onosproject.mcast.api.McastEvent;
+import org.onosproject.mcast.api.McastRoute;
+import org.onosproject.mcast.api.McastRouteUpdate;
+import org.onosproject.mcast.api.MulticastRouteService;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.HostId;
+import org.onosproject.net.flow.TrafficSelector;
+import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.flow.criteria.IPCriterion;
+import org.onosproject.net.flow.instructions.Instructions.OutputInstruction;
+import org.onosproject.net.flowobjective.Objective;
+import org.onosproject.store.service.StorageServiceAdapter;
+import org.onosproject.store.service.TestConsistentMap;
+import org.opencord.cordmcast.CordMcastStatistics;
+import org.opencord.cordmcast.CordMcastStatisticsEvent;
+import org.osgi.service.component.ComponentContext;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Sets;
+
+import java.util.Dictionary;
+import java.util.HashSet;
+import java.util.Hashtable;
+import java.util.Set;
+import java.util.Map;
+import java.util.Arrays;
+import java.util.Collection;
+
+import static org.junit.Assert.*;
+import static org.onlab.junit.TestTools.assertAfter;
+
+public class McastTest extends McastTestBase {
+
+  private CordMcast cordMcast;
+  private CordMcastStatisticsManager cordMcastStatisticsManager;
+
+  private MockCordMcastStatisticsEventListener mockListener = new MockCordMcastStatisticsEventListener();
+
+  private static final int WAIT_TIMEOUT = 1000;
+  private static final int WAIT = 250;
+  McastRouteUpdate previousSubject, currentSubject;
+
+  @Before
+  public void setUp() {
+      cordMcast = new CordMcast();
+      cordMcastStatisticsManager = new CordMcastStatisticsManager();
+
+      cordMcast.coreService = new MockCoreService();
+      cordMcast.networkConfig = new TestNetworkConfigRegistry();
+      cordMcast.flowObjectiveService = new MockFlowObjectiveService();
+      cordMcast.mastershipService = new TestMastershipService();
+      cordMcast.deviceService = new MockDeviceService();
+      cordMcast.componentConfigService = new ComponentConfigAdapter();
+      cordMcastStatisticsManager.componentConfigService = new ComponentConfigAdapter();
+      cordMcastStatisticsManager.addListener(mockListener);
+      cordMcast.sadisService = new MockSadisService();
+      cordMcast.cordMcastStatisticsService = cordMcastStatisticsManager;
+
+      cordMcast.storageService = EasyMock.createMock(StorageServiceAdapter.class);
+      expect(cordMcast.storageService.consistentMapBuilder()).andReturn(new TestConsistentMap.Builder<>());
+      replay(cordMcast.storageService);
+
+      Dictionary<String, Object> cfgDict = new Hashtable<String, Object>();
+      cfgDict.put("vlanEnabled", false);
+      cfgDict.put("eventGenerationPeriodInSeconds", EVENT_GENERATION_PERIOD);
+
+      cordMcast.componentConfigService = EasyMock.createNiceMock(ComponentConfigService.class);
+      replay(cordMcast.componentConfigService);
+
+      Set<McastRoute> route1Set = new HashSet<McastRoute>();
+      route1Set.add(route1);
+
+      cordMcast.mcastService = EasyMock.createNiceMock(MulticastRouteService.class);
+      expect(cordMcast.mcastService.getRoutes()).andReturn(Sets.newHashSet());
+      replay(cordMcast.mcastService);
+
+      cordMcastStatisticsManager.mcastService = EasyMock.createNiceMock(MulticastRouteService.class);
+      expect(cordMcastStatisticsManager.mcastService.getRoutes()).andReturn(route1Set).times(2);
+      replay(cordMcastStatisticsManager.mcastService);
+
+      TestUtils.setField(cordMcastStatisticsManager, "eventDispatcher", new TestEventDispatcher());
+
+      ComponentContext componentContext = EasyMock.createMock(ComponentContext.class);
+      expect(componentContext.getProperties()).andReturn(cfgDict).times(2);
+      replay(componentContext);
+      cordMcast.cordMcastStatisticsService = cordMcastStatisticsManager;
+      cordMcastStatisticsManager.activate(componentContext);
+
+      cordMcast.activate(componentContext);
+   }
+
+    @After
+    public void tearDown() {
+      cordMcast.deactivate();
+      forwardMap.clear();
+      nextMap.clear();
+    }
+
+    @Test
+    public void testAddingSinkEvent() throws InterruptedException {
+
+      Set<ConnectPoint> sinks2Cp = new HashSet<ConnectPoint>(Arrays.asList(CONNECT_POINT_B));
+      Map<HostId, Set<ConnectPoint>> sinks2 = ImmutableMap.of(HOST_ID_NONE, sinks2Cp);
+
+      //Adding the details to create different routes
+      previousSubject = McastRouteUpdate.mcastRouteUpdate(route1, sources, sinks);
+      currentSubject = McastRouteUpdate.mcastRouteUpdate(route1, sources, sinks2);
+      // Creating new mcast event for adding sink
+      McastEvent event = new McastEvent(McastEvent.Type.SINKS_ADDED, previousSubject, currentSubject);
+      cordMcast.listener.event(event);
+      synchronized (forwardMap) {
+        forwardMap.wait(WAIT_TIMEOUT);
+      }
+
+      // ForwardMap will contain the operation "Add" in the flowObjective. None -> CP_B
+      assertNotNull(forwardMap.get(DEVICE_ID_OF_A));
+      assertTrue(forwardMap.get(DEVICE_ID_OF_A).op() == Objective.Operation.ADD);
+
+      // Output port number will be PORT_B i.e. 16
+      Collection<TrafficTreatment> traffictreatMentCollection =
+           nextMap.get(DEVICE_ID_OF_A).next();
+      assertTrue(1 == traffictreatMentCollection.size());
+      OutputInstruction output = null;
+      for (TrafficTreatment trafficTreatment : traffictreatMentCollection) {
+         output = outputPort(trafficTreatment);
+      }
+      assertNotNull(output);
+      assertTrue(PORT_B == output.port());
+      // Checking the group ip address
+      TrafficSelector trafficSelector = forwardMap.get(DEVICE_ID_OF_A).selector();
+      IPCriterion ipCriterion = ipAddress(trafficSelector);
+      assertNotNull(ipCriterion);
+      assertTrue(MULTICAST_IP.equals(ipCriterion.ip().address()));
+
+    }
+
+    @Test
+    public void testAddToExistingSinkEvent() throws InterruptedException {
+
+       // Adding first sink (none --> CP_B)
+       testAddingSinkEvent();
+
+       Set<ConnectPoint> sinksCp = new HashSet<ConnectPoint>(Arrays.asList(CONNECT_POINT_B));
+       Map<HostId, Set<ConnectPoint>> sinks = ImmutableMap.of(HOST_ID_NONE, sinksCp);
+       previousSubject = McastRouteUpdate.mcastRouteUpdate(route1, sources, sinks);
+       sinksCp = new HashSet<ConnectPoint>(Arrays.asList(CONNECT_POINT_B, CONNECT_POINT_C));
+       sinks = ImmutableMap.of(HOST_ID_NONE, sinksCp);
+       currentSubject = McastRouteUpdate.mcastRouteUpdate(route1, sources, sinks);
+       // Again listening the mcast event with different output port ( none --> CP_B, CP_C)
+       McastEvent event = new McastEvent(McastEvent.Type.SINKS_ADDED, previousSubject, currentSubject);
+       cordMcast.listener.event(event);
+
+       // NextMap will contain the operation "ADD_TO_EXISTING" in the DefaultNextObjective.
+       assertAfter(WAIT_TIMEOUT, WAIT_TIMEOUT * 2, () ->
+       assertTrue(nextMap.get(DEVICE_ID_OF_A).op() == Objective.Operation.ADD_TO_EXISTING));
+       // Output port number will be changed to 24 i.e. PORT_C
+       Collection<TrafficTreatment> traffictreatMentCollection = nextMap.get(DEVICE_ID_OF_A).next();
+       assertTrue(1 == traffictreatMentCollection.size());
+       OutputInstruction output = null;
+       for (TrafficTreatment trafficTreatment : traffictreatMentCollection) {
+          output = outputPort(trafficTreatment);
+       }
+       assertNotNull(output);
+       assertTrue(PORT_C == output.port());
+    }
+
+    @Test
+    public void testRemoveSinkEvent() throws InterruptedException {
+
+       testAddToExistingSinkEvent();
+       // Handling the mcast event for removing sink.
+       Set<ConnectPoint> sinksCp = new HashSet<ConnectPoint>(Arrays.asList(CONNECT_POINT_B, CONNECT_POINT_C));
+       Map<HostId, Set<ConnectPoint>> sinks = ImmutableMap.of(HOST_ID_NONE, sinksCp);
+       previousSubject = McastRouteUpdate.mcastRouteUpdate(route1, sources, sinks);
+       sinksCp = new HashSet<ConnectPoint>(Arrays.asList(CONNECT_POINT_C));
+       sinks = ImmutableMap.of(HOST_ID_NONE, sinksCp);
+       currentSubject = McastRouteUpdate.mcastRouteUpdate(route1, sources, sinks);
+       McastEvent event = new McastEvent(McastEvent.Type.SINKS_REMOVED, previousSubject, currentSubject);
+       cordMcast.listener.event(event);
+       // Operation will be REMOVE_FROM_EXISTING and nextMap will be updated. ( None --> CP_C)
+       assertAfter(WAIT_TIMEOUT, WAIT_TIMEOUT * 2, () ->
+       assertTrue(nextMap.get(DEVICE_ID_OF_A).op() == Objective.Operation.REMOVE_FROM_EXISTING));
+
+       // Output port number will be PORT_B i.e. 16
+       // Port_B is removed from the group.
+       Collection<TrafficTreatment> traffictreatMentCollection =
+            nextMap.get(DEVICE_ID_OF_A).next();
+       assertTrue(1 == traffictreatMentCollection.size());
+       OutputInstruction output = null;
+       for (TrafficTreatment trafficTreatment : traffictreatMentCollection) {
+          output = outputPort(trafficTreatment);
+       }
+       assertNotNull(output);
+       assertTrue(PORT_B == output.port());
+
+    }
+
+    @Test
+    public void testRemoveLastSinkEvent() throws InterruptedException {
+
+       testRemoveSinkEvent();
+       // Handling the mcast event for removing sink.
+       Set<ConnectPoint> sinksCp = new HashSet<ConnectPoint>(Arrays.asList(CONNECT_POINT_C));
+       Map<HostId, Set<ConnectPoint>> sinks = ImmutableMap.of(HOST_ID_NONE, sinksCp);
+       previousSubject = McastRouteUpdate.mcastRouteUpdate(route1, sources, sinks);
+       sinksCp = new HashSet<ConnectPoint>(Arrays.asList());
+       sinks = ImmutableMap.of(HOST_ID_NONE, sinksCp);
+       currentSubject = McastRouteUpdate.mcastRouteUpdate(route1, sources, sinks);
+       McastEvent event = new McastEvent(McastEvent.Type.SINKS_REMOVED, previousSubject, currentSubject);
+       cordMcast.listener.event(event);
+
+       // Operation will be REMOVE_FROM_EXISTING and nextMap will be updated.  None --> { }
+       assertAfter(WAIT_TIMEOUT, WAIT_TIMEOUT * 2, () ->
+       assertTrue(nextMap.get(DEVICE_ID_OF_A).op() == Objective.Operation.REMOVE_FROM_EXISTING));
+
+       // Output port number will be changed to 24 i.e. PORT_C
+       Collection<TrafficTreatment> traffictreatMentCollection = nextMap.get(DEVICE_ID_OF_A).next();
+       assertTrue(1 == traffictreatMentCollection.size());
+       OutputInstruction output = null;
+       for (TrafficTreatment trafficTreatment : traffictreatMentCollection) {
+          output = outputPort(trafficTreatment);
+       }
+       assertNotNull(output);
+       assertTrue(PORT_C == output.port());
+  }
+
+  @Test
+  public void testUnkownOltDevice() throws InterruptedException {
+
+       // Configuration of mcast event for unknown olt device
+       final DeviceId deviceIdOfB = DeviceId.deviceId("of:1");
+
+       ConnectPoint connectPointA = new ConnectPoint(deviceIdOfB, PORT_A);
+       ConnectPoint connectPointB = new ConnectPoint(deviceIdOfB, PORT_B);
+       Set<ConnectPoint> sourcesCp = new HashSet<ConnectPoint>(Arrays.asList(connectPointA));
+       Set<ConnectPoint> sinksCp = new HashSet<ConnectPoint>(Arrays.asList());
+       Set<ConnectPoint> sinks2Cp = new HashSet<ConnectPoint>(Arrays.asList(connectPointB));
+       Map<HostId, Set<ConnectPoint>> sources = ImmutableMap.of(HOST_ID_NONE, sourcesCp);
+
+       Map<HostId, Set<ConnectPoint>> sinks = ImmutableMap.of(HOST_ID_NONE, sinksCp);
+       Map<HostId, Set<ConnectPoint>> sinks2 = ImmutableMap.of(HOST_ID_NONE, sinks2Cp);
+       //Adding the details to create different routes
+       McastRouteUpdate previousSubject = McastRouteUpdate.mcastRouteUpdate(route1, sources, sinks);
+       McastRouteUpdate currentSubject = McastRouteUpdate.mcastRouteUpdate(route1, sources, sinks2);
+       // Creating new mcast event for adding sink
+       McastEvent event = new McastEvent(McastEvent.Type.SINKS_ADDED, previousSubject, currentSubject);
+       cordMcast.listener.event(event);
+       // OltInfo flag is set to true when olt device is unkown
+       assertAfter(WAIT, WAIT * 2, () -> assertTrue(knownOltFlag));
+       assertTrue(0 == forwardMap.size());
+       assertTrue(0 == nextMap.size());
+
+  }
+
+  @Test
+  public void testRouteAddedEvent() throws InterruptedException {
+
+      //Adding the details to create different routes
+      previousSubject = McastRouteUpdate.mcastRouteUpdate(route1, emptySource, sinks);
+      currentSubject = McastRouteUpdate.mcastRouteUpdate(route1, emptySource, sinks);
+      // Creating new mcast event for route adding
+      McastEvent event = new McastEvent(McastEvent.Type.ROUTE_ADDED, previousSubject, currentSubject);
+      cordMcast.listener.event(event);
+      // There will be no forwarding objective
+      assertAfter(WAIT, WAIT * 2, () -> assertTrue(0 == forwardMap.size()));
+      assertTrue(0 == nextMap.size());
+
+   }
+
+
+  @Test
+  public void testRouteRemovedEvent() throws InterruptedException {
+
+      testRouteAddedEvent();
+
+      //Adding the details to create different routes
+      previousSubject = McastRouteUpdate.mcastRouteUpdate(route1, emptySource, sinks);
+      currentSubject = McastRouteUpdate.mcastRouteUpdate(route1, emptySource, sinks);
+      // Creating new mcast event for route removing
+      McastEvent event = new McastEvent(McastEvent.Type.ROUTE_REMOVED, previousSubject, currentSubject);
+      cordMcast.listener.event(event);
+      // There will be no forwarding objective
+      assertAfter(WAIT, WAIT * 2, () -> assertTrue(0 == forwardMap.size()));
+      assertTrue(0 == nextMap.size());
+
+   }
+
+  @Test
+  public void testSourceAddedEvent() throws InterruptedException {
+
+      // Adding route before adding source.
+      testRouteAddedEvent();
+
+      //Adding the details to create different routes
+      previousSubject = McastRouteUpdate.mcastRouteUpdate(route1, emptySource, sinks);
+      currentSubject = McastRouteUpdate.mcastRouteUpdate(route1, sources, sinks);
+      // Creating new mcast event for source adding
+      McastEvent event = new McastEvent(McastEvent.Type.SOURCES_ADDED, previousSubject, currentSubject);
+      cordMcast.listener.event(event);
+      // There will be no forwarding objective
+      assertAfter(WAIT, WAIT * 2, () -> assertTrue(0 == forwardMap.size()));
+      assertTrue(0 == nextMap.size());
+
+   }
+
+  @Test
+  public void testSourcesRemovedEvent() throws InterruptedException {
+
+      testSourceAddedEvent();
+
+      //Adding the details to create different routes
+      previousSubject = McastRouteUpdate.mcastRouteUpdate(route1, sources, sinks);
+      currentSubject = McastRouteUpdate.mcastRouteUpdate(route1, emptySource, sinks);
+      // Creating new mcast event for removing source
+      // Warning message of unknown event will be displayed.
+      McastEvent event = new McastEvent(McastEvent.Type.SOURCES_REMOVED, previousSubject, currentSubject);
+      cordMcast.listener.event(event);
+      assertAfter(WAIT, WAIT * 2, () -> assertTrue(0 == forwardMap.size()));
+      assertTrue(0 == nextMap.size());
+   }
+
+    @Test
+    public void mcastTestEventGeneration() throws InterruptedException {
+      //fetching route details used to push CordMcastStatisticsEvent.
+      IpAddress testGroup = route1.group();
+      String testSource = route1.source().isEmpty() ? "*" : route1.source().get().toString();
+      VlanId testVlan = cordMcast.assignedVlan();
+
+      // Thread is scheduled without any delay
+      assertAfter(WAIT, WAIT * 2, () ->
+              assertEquals(1, mockListener.mcastEventList.size()));
+
+      for (CordMcastStatisticsEvent event: mockListener.mcastEventList) {
+           assertEquals(event.type(), CordMcastStatisticsEvent.Type.STATUS_UPDATE);
+      }
+
+      CordMcastStatistics cordMcastStatistics = mockListener.mcastEventList.get(0).subject().get(0);
+      assertEquals(VlanId.NONE, cordMcastStatistics.getVlanId());
+      assertEquals(testVlan, cordMcastStatistics.getVlanId());
+      assertEquals(testSource, cordMcastStatistics.getSourceAddress());
+      assertEquals(testGroup, cordMcastStatistics.getGroupAddress());
+
+      // Test for vlanEnabled
+      Dictionary<String, Object> cfgDict = new Hashtable<>();
+      cfgDict.put("vlanEnabled", true);
+
+      ComponentContext componentContext = EasyMock.createMock(ComponentContext.class);
+      expect(componentContext.getProperties()).andReturn(cfgDict);
+      replay(componentContext);
+      cordMcast.modified(componentContext);
+      testVlan = cordMcast.assignedVlan();
+
+      assertAfter(EVENT_GENERATION_PERIOD, EVENT_GENERATION_PERIOD * 1000, () ->
+              assertEquals(2, mockListener.mcastEventList.size()));
+
+      for (CordMcastStatisticsEvent event: mockListener.mcastEventList) {
+          assertEquals(event.type(), CordMcastStatisticsEvent.Type.STATUS_UPDATE);
+      }
+
+      cordMcastStatistics = mockListener.mcastEventList.get(1).subject().get(0);
+      assertNotEquals(VlanId.NONE, cordMcastStatistics.getVlanId());
+      assertEquals(testVlan, cordMcastStatistics.getVlanId());
+      assertEquals(testSource, cordMcastStatistics.getSourceAddress());
+      assertEquals(testGroup, cordMcastStatistics.getGroupAddress());
+    }
+}
diff --git a/app/src/test/java/org/opencord/cordmcast/impl/McastTestBase.java b/app/src/test/java/org/opencord/cordmcast/impl/McastTestBase.java
new file mode 100644
index 0000000..17ad11b
--- /dev/null
+++ b/app/src/test/java/org/opencord/cordmcast/impl/McastTestBase.java
@@ -0,0 +1,291 @@
+/*
+ * Copyright 2016-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.opencord.cordmcast.impl;
+
+import java.util.List;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.Set;
+import java.util.HashSet;
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.Iterator;
+
+import org.onlab.packet.Ip4Address;
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.VlanId;
+import org.onosproject.TestApplicationId;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreServiceAdapter;
+import org.onosproject.event.DefaultEventSinkRegistry;
+import org.onosproject.event.Event;
+import org.onosproject.event.EventDeliveryService;
+import org.onosproject.event.EventSink;
+import org.onosproject.mastership.MastershipServiceAdapter;
+import org.onosproject.mcast.api.McastRoute;
+import org.onosproject.net.AnnotationKeys;
+import org.onosproject.net.Annotations;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.DefaultAnnotations;
+import org.onosproject.net.DefaultDevice;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.HostId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.SparseAnnotations;
+import org.onosproject.net.config.Config;
+import org.onosproject.net.config.NetworkConfigRegistryAdapter;
+import org.onosproject.net.config.basics.McastConfig;
+import org.onosproject.net.device.DeviceServiceAdapter;
+import org.onosproject.net.flow.TrafficSelector;
+import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.flow.criteria.Criterion;
+import org.onosproject.net.flow.criteria.IPCriterion;
+import org.onosproject.net.flow.instructions.Instruction;
+import org.onosproject.net.flow.instructions.Instructions.OutputInstruction;
+import org.onosproject.net.flowobjective.FlowObjectiveServiceAdapter;
+import org.onosproject.net.flowobjective.ForwardingObjective;
+import org.onosproject.net.flowobjective.NextObjective;
+
+import com.google.common.collect.ImmutableMap;
+import org.opencord.cordmcast.CordMcastStatisticsEvent;
+import org.opencord.cordmcast.CordMcastStatisticsEventListener;
+import org.opencord.sadis.BandwidthProfileInformation;
+import org.opencord.sadis.BaseInformationService;
+import org.opencord.sadis.SadisService;
+import org.opencord.sadis.SubscriberAndDeviceInformation;
+
+import static com.google.common.base.Preconditions.checkState;
+
+public class McastTestBase {
+
+     // Map to store the forwardingObjective in flowObjectiveService.forward()
+     Map<DeviceId, ForwardingObjective> forwardMap = new HashMap<>();
+     // Map to store the nextObjective in flowObjectiveService.next()
+     Map<DeviceId, NextObjective> nextMap = new HashMap<>();
+     // Device configuration
+     protected static final DeviceId DEVICE_ID_OF_A = DeviceId.deviceId("of:00000a0a0a0a0a00");
+     // Port number
+     protected static final PortNumber PORT_A = PortNumber.portNumber(1048576);
+     protected static final PortNumber PORT_B = PortNumber.portNumber(16);
+     protected static final PortNumber PORT_C = PortNumber.portNumber(24);
+
+     // Connect Point for creating source and sink
+     protected static final ConnectPoint CONNECT_POINT_A = new ConnectPoint(DEVICE_ID_OF_A, PORT_A);
+     protected static final ConnectPoint CONNECT_POINT_B = new ConnectPoint(DEVICE_ID_OF_A, PORT_B);
+     protected static final ConnectPoint CONNECT_POINT_C = new ConnectPoint(DEVICE_ID_OF_A, PORT_C);
+
+     // serial number of the device A
+     protected static final String SERIAL_NUMBER_OF_DEVICE_A = "serialNumberOfDevA";
+     // Management ip address of the device A
+     protected static final Ip4Address MANAGEMENT_IP_OF_A = Ip4Address.valueOf("10.177.125.4");
+     //Host id configuration
+     protected static final HostId HOST_ID_NONE = HostId.NONE;
+     // Source connect point
+     protected static final  Set<ConnectPoint> SOURCES_CP = new HashSet<ConnectPoint>(Arrays.asList(CONNECT_POINT_A));
+     Map<HostId, Set<ConnectPoint>> sources = ImmutableMap.of(HOST_ID_NONE, SOURCES_CP);
+
+     protected static final IpAddress MULTICAST_IP = IpAddress.valueOf("224.0.0.22");
+     protected static final IpAddress SOURCE_IP = IpAddress.valueOf("192.168.1.1");
+     // Creating dummy route with IGMP type.
+     McastRoute route1 = new McastRoute(SOURCE_IP, MULTICAST_IP, McastRoute.Type.IGMP);
+
+     // Creating empty sink used in prevRoute
+     Set<ConnectPoint> sinksCp = new HashSet<ConnectPoint>(Arrays.asList());
+     Map<HostId, Set<ConnectPoint>> sinks = ImmutableMap.of(HOST_ID_NONE, sinksCp);
+
+     // Creating empty source
+     Set<ConnectPoint> sourceCp = new HashSet<ConnectPoint>(Arrays.asList());
+     Map<HostId, Set<ConnectPoint>> emptySource = ImmutableMap.of(HOST_ID_NONE, sourceCp);
+
+     // Flag to check unknown olt device
+     boolean knownOltFlag = false;
+
+     // For the tests reduce events period to 1s
+     protected static final int EVENT_GENERATION_PERIOD = 1;
+
+     class MockCoreService extends CoreServiceAdapter {
+          @Override
+          public ApplicationId registerApplication(String name) {
+               ApplicationId testApplicationId = TestApplicationId.create("org.opencord.cordmcast");
+               return testApplicationId;
+          }
+     }
+
+     class MockFlowObjectiveService extends FlowObjectiveServiceAdapter {
+          @Override
+          public void forward(DeviceId deviceId, ForwardingObjective forwardingObjective) {
+              synchronized (forwardMap) {
+                forwardMap.put(deviceId, forwardingObjective);
+                forwardMap.notify();
+              }
+          }
+
+          @Override
+          public void next(DeviceId deviceId, NextObjective nextObjective) {
+             nextMap.put(deviceId, nextObjective);
+          }
+     }
+
+     class TestMastershipService extends MastershipServiceAdapter {
+          @Override
+          public boolean isLocalMaster(DeviceId deviceId) {
+               return true;
+          }
+     }
+
+    protected class MockSadisService implements SadisService {
+
+        @Override
+        public BaseInformationService<SubscriberAndDeviceInformation> getSubscriberInfoService() {
+            return new MockSubService();
+        }
+
+        @Override
+        public BaseInformationService<BandwidthProfileInformation> getBandwidthProfileService() {
+            return null;
+        }
+    }
+
+    /**
+     * Mocks the McastConfig class to return vlan id value.
+     */
+    static class MockMcastConfig extends McastConfig {
+        @Override
+        public VlanId egressVlan() {
+            return VlanId.vlanId("4000");
+        }
+    }
+
+    /**
+     * Mocks the network config registry.
+     */
+    @SuppressWarnings("unchecked")
+    static final class TestNetworkConfigRegistry
+            extends NetworkConfigRegistryAdapter {
+        @Override
+        public <S, C extends Config<S>> C getConfig(S subject, Class<C> configClass) {
+            McastConfig mcastConfig = new MockMcastConfig();
+            return (C) mcastConfig;
+        }
+    }
+
+    public static class TestEventDispatcher extends DefaultEventSinkRegistry
+            implements EventDeliveryService {
+
+        @Override
+        @SuppressWarnings("unchecked")
+        public synchronized void post(Event event) {
+            EventSink sink = getSink(event.getClass());
+            checkState(sink != null, "No sink for event %s", event);
+            sink.process(event);
+        }
+
+        @Override
+        public void setDispatchTimeLimit(long millis) {
+
+        }
+
+        @Override
+        public long getDispatchTimeLimit() {
+            return 0;
+        }
+    }
+
+    public static class MockCordMcastStatisticsEventListener implements CordMcastStatisticsEventListener {
+        protected List<CordMcastStatisticsEvent> mcastEventList = new ArrayList<CordMcastStatisticsEvent>();
+
+        @Override
+        public void event(CordMcastStatisticsEvent event) {
+            mcastEventList.add(event);
+        }
+    }
+
+    private class MockSubService implements BaseInformationService<SubscriberAndDeviceInformation> {
+        MockSubscriberAndDeviceInformation deviceA =
+                new MockSubscriberAndDeviceInformation(SERIAL_NUMBER_OF_DEVICE_A, MANAGEMENT_IP_OF_A);
+
+        @Override
+        public SubscriberAndDeviceInformation get(String id) {
+            return SERIAL_NUMBER_OF_DEVICE_A.equals(id) ? deviceA : null;
+        }
+
+        @Override
+        public void invalidateAll() {
+        }
+
+        @Override
+        public void invalidateId(String id) {
+        }
+
+        @Override
+        public SubscriberAndDeviceInformation getfromCache(String id) {
+            return null;
+        }
+    }
+
+    private class MockSubscriberAndDeviceInformation extends SubscriberAndDeviceInformation {
+
+        MockSubscriberAndDeviceInformation(String id, Ip4Address ipAddress) {
+            this.setId(id);
+            this.setIPAddress(ipAddress);
+            this.setUplinkPort((int) PORT_A.toLong());
+        }
+    }
+
+    class MockDeviceService extends DeviceServiceAdapter {
+
+        @Override
+        public Device getDevice(DeviceId deviceId) {
+            if (DEVICE_ID_OF_A.equals(deviceId)) {
+                DefaultAnnotations.Builder annotationsBuilder = DefaultAnnotations.builder()
+                        .set(AnnotationKeys.MANAGEMENT_ADDRESS, MANAGEMENT_IP_OF_A.toString());
+                SparseAnnotations annotations = annotationsBuilder.build();
+                Annotations[] da = {annotations};
+
+                Device deviceA = new DefaultDevice(null, DEVICE_ID_OF_A, Device.Type.OTHER, "", "",
+                        "", SERIAL_NUMBER_OF_DEVICE_A, null, da);
+                return deviceA;
+            } else {
+                knownOltFlag = true;
+            }
+            return null;
+        }
+    }
+
+     public OutputInstruction outputPort(TrafficTreatment trafficTreatment) {
+         List<Instruction> listOfInstructions = trafficTreatment.allInstructions();
+         OutputInstruction output = null;
+         for (Instruction intruction : listOfInstructions) {
+           output = (OutputInstruction) intruction;
+         }
+         return output;
+     }
+
+     public IPCriterion ipAddress(TrafficSelector trafficSelector) {
+       Set<Criterion> criterionSet = trafficSelector.criteria();
+       Iterator<Criterion> it = criterionSet.iterator();
+       IPCriterion ipCriterion = null;
+       while (it.hasNext()) {
+           Criterion criteria = it.next();
+           if (Criterion.Type.IPV4_DST == criteria.type()) {
+             ipCriterion = (IPCriterion) criteria;
+           }
+       }
+       return (IPCriterion) ipCriterion;
+     }
+
+}