@mnjul , could you please use `MockNfcHandoverManager` for dependence issue. We have to ensure that the unit test is not depended on other module. And it's not a good ideal to use real `NfcHandoverManager` in test of `BluetoothTransfer` module. Please create a new file for the `MockNfcHandoverManager`. Then, you will need to define some mock methods which are using in `BluetoothTransfer`.