diff --git a/vendor/github.com/opencord/voltha-lib-go/v7/pkg/grpc/mock_core_service.go b/vendor/github.com/opencord/voltha-lib-go/v7/pkg/grpc/mock_core_service.go
new file mode 100644
index 0000000..745753c
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-lib-go/v7/pkg/grpc/mock_core_service.go
@@ -0,0 +1,135 @@
+/*
+ * 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 grpc
+
+import (
+	"context"
+	"strconv"
+	"time"
+
+	"github.com/golang/protobuf/ptypes/empty"
+	"github.com/opencord/voltha-protos/v5/go/common"
+	ic "github.com/opencord/voltha-protos/v5/go/inter_container"
+	"github.com/opencord/voltha-protos/v5/go/voltha"
+)
+
+//MockCoreServiceHandler implements the methods in the core service
+type MockCoreServiceHandler struct{}
+
+func (handler *MockCoreServiceHandler) RegisterAdapter(ctx context.Context, reg *ic.AdapterRegistration) (*empty.Empty, error) {
+	//logger.Debugw(ctx, "registration-received", log.Fields{"input": reg})
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) DeviceUpdate(context.Context, *voltha.Device) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) PortCreated(context.Context, *voltha.Port) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) PortsStateUpdate(context.Context, *ic.PortStateFilter) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) DeleteAllPorts(context.Context, *common.ID) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) GetDevicePort(context.Context, *ic.PortFilter) (*voltha.Port, error) {
+	return &voltha.Port{}, nil
+}
+
+func (handler *MockCoreServiceHandler) ListDevicePorts(context.Context, *common.ID) (*voltha.Ports, error) {
+	return &voltha.Ports{}, nil
+}
+
+func (handler *MockCoreServiceHandler) DeviceStateUpdate(context.Context, *ic.DeviceStateFilter) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) DevicePMConfigUpdate(context.Context, *voltha.PmConfigs) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) ChildDeviceDetected(context.Context, *ic.DeviceDiscovery) (*voltha.Device, error) {
+	return &voltha.Device{}, nil
+}
+
+func (handler *MockCoreServiceHandler) ChildDevicesLost(context.Context, *common.ID) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) ChildDevicesDetected(context.Context, *common.ID) (*empty.Empty, error) {
+	time.Sleep(50 * time.Millisecond)
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) GetDevice(ctx context.Context, id *common.ID) (*voltha.Device, error) {
+	time.Sleep(50 * time.Millisecond)
+	vlan, _ := strconv.Atoi(id.Id)
+	return &voltha.Device{
+		Id:   id.Id,
+		Type: "test-1234",
+		Vlan: uint32(vlan),
+	}, nil
+}
+
+func (handler *MockCoreServiceHandler) GetChildDevice(context.Context, *ic.ChildDeviceFilter) (*voltha.Device, error) {
+	return nil, nil
+}
+
+func (handler *MockCoreServiceHandler) GetChildDevices(context.Context, *common.ID) (*voltha.Devices, error) {
+	return &voltha.Devices{}, nil
+}
+
+func (handler *MockCoreServiceHandler) SendPacketIn(context.Context, *ic.PacketIn) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) DeviceReasonUpdate(context.Context, *ic.DeviceReason) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) PortStateUpdate(context.Context, *ic.PortState) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+// Additional API found in the Core - unused?
+func (handler *MockCoreServiceHandler) ReconcileChildDevices(context.Context, *common.ID) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) GetChildDeviceWithProxyAddress(context.Context, *voltha.Device_ProxyAddress) (*voltha.Device, error) {
+	return &voltha.Device{}, nil
+}
+
+func (handler *MockCoreServiceHandler) GetPorts(context.Context, *ic.PortFilter) (*voltha.Ports, error) {
+	return &voltha.Ports{}, nil
+}
+
+func (handler *MockCoreServiceHandler) ChildrenStateUpdate(context.Context, *ic.DeviceStateFilter) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) UpdateImageDownload(context.Context, *voltha.ImageDownload) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+func (handler *MockCoreServiceHandler) GetHealthStatus(ctx context.Context, empty *empty.Empty) (*voltha.HealthStatus, error) {
+	return &voltha.HealthStatus{State: voltha.HealthStatus_HEALTHY}, nil
+}