added extra unit test cases

Author: rejain789

npm/pkg/dataplane/dataplane_windows.go

@@ -390,7 +390,7 @@ func removeCommonEndpoints(endpoints, endpointsAttached *[]hcn.HostComputeEndpoi
 	}
 
 	// Append endpoints from larger list and remove common IDs from map
-	var result []hcn.HostComputeEndpoint
+	result := []hcn.HostComputeEndpoint{}
 	for i := 0; i < len(*largerEndpointsList); i++ {
 		ep := (*largerEndpointsList)[i]
 		result = append(result, ep)

npm/pkg/dataplane/dataplane_windows_test.go

@@ -119,6 +119,24 @@ func TestRemoveCommonEndpoints(t *testing.T) {
 			endpointsAttached: []hcn.HostComputeEndpoint{{Id: "567890"}, {Id: "789012"}, {Id: "123456"}},
 			expected:          []hcn.HostComputeEndpoint{{Id: "456901"}, {Id: "560971"}, {Id: "123456"}, {Id: "789012"}, {Id: "567890"}},
 		},
+		{
+			name:              "no values",
+			endpoints:         []hcn.HostComputeEndpoint{},
+			endpointsAttached: []hcn.HostComputeEndpoint{},
+			expected:          []hcn.HostComputeEndpoint{},
+		},
+		{
+			name:              "1 value - same",
+			endpoints:         []hcn.HostComputeEndpoint{{Id: "456901"}},
+			endpointsAttached: []hcn.HostComputeEndpoint{{Id: "456901"}},
+			expected:          []hcn.HostComputeEndpoint{{Id: "456901"}},
+		},
+		{
+			name:              "1 value - different",
+			endpoints:         []hcn.HostComputeEndpoint{{Id: "456901"}},
+			endpointsAttached: []hcn.HostComputeEndpoint{{Id: "456990"}},
+			expected:          []hcn.HostComputeEndpoint{{Id: "456990"}, {Id: "456901"}},
+		},
 	}
 	for _, tt := range tests {
 		tt := tt