public void LoadDataThrows()
        {
            var logger = new Mock <ILogger <JsonFileAddressDataSource> >();
            var config = new Mock <IConfiguration>();

            config.Setup(c => c["AddressDataFile"]).Returns("Notfound.json").Verifiable();
            var src = new JsonFileAddressDataSource(config.Object, logger.Object);

            src.Init();
        }