[VOL-4246] Feature parity with the previous implementation

Change-Id: I3741edb3c1b88b1cf8b5e6d4ff0900132e2e5e6a
diff --git a/impl/src/test/java/org/opencord/olt/impl/OltDeviceServiceTest.java b/impl/src/test/java/org/opencord/olt/impl/OltDeviceServiceTest.java
new file mode 100644
index 0000000..5623896
--- /dev/null
+++ b/impl/src/test/java/org/opencord/olt/impl/OltDeviceServiceTest.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2021-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.olt.impl;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mockito;
+import org.onosproject.cluster.ClusterService;
+import org.onosproject.cluster.ControllerNode;
+import org.onosproject.cluster.DefaultControllerNode;
+import org.onosproject.cluster.Leader;
+import org.onosproject.cluster.Leadership;
+import org.onosproject.cluster.LeadershipService;
+import org.onosproject.cluster.NodeId;
+import org.onosproject.mastership.MastershipService;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.device.DeviceService;
+import org.opencord.sadis.SadisService;
+
+import java.util.LinkedList;
+
+import static org.mockito.Matchers.eq;
+import static org.mockito.Mockito.doReturn;
+
+public class OltDeviceServiceTest {
+    OltDeviceService component;
+    private OltDeviceService oltDeviceService;
+
+    @Before
+    public void setUp() {
+        component = new OltDeviceService();
+        component.mastershipService = Mockito.mock(MastershipService.class);
+        component.deviceService = Mockito.mock(DeviceService.class);
+        component.leadershipService = Mockito.mock(LeadershipService.class);
+        component.clusterService = Mockito.mock(ClusterService.class);
+        component.sadisService = Mockito.mock(SadisService.class);
+        component.activate();
+
+        oltDeviceService = Mockito.spy(component);
+
+
+    }
+
+    @Test
+    public void testIsLocalLeader() {
+
+        NodeId nodeId = NodeId.nodeId("node1");
+        ControllerNode localNode = new DefaultControllerNode(nodeId, "host1");
+        DeviceId deviceId1 = DeviceId.deviceId("availableNotLocal");
+        DeviceId deviceId2 = DeviceId.deviceId("notAvailableButLocal");
+        Leadership leadership = new Leadership(deviceId2.toString(), new Leader(nodeId, 0, 0), new LinkedList<>());
+
+        doReturn(true).when(oltDeviceService.deviceService).isAvailable(eq(deviceId1));
+        doReturn(false).when(oltDeviceService.mastershipService).isLocalMaster(eq(deviceId1));
+        Assert.assertFalse(oltDeviceService.isLocalLeader(deviceId1));
+
+        doReturn(false).when(oltDeviceService.deviceService).isAvailable(eq(deviceId1));
+        doReturn(localNode).when(oltDeviceService.clusterService).getLocalNode();
+        doReturn(leadership).when(oltDeviceService.leadershipService).runForLeadership(eq(deviceId2.toString()));
+        Assert.assertTrue(oltDeviceService.isLocalLeader(deviceId2));
+
+    }
+}