public CalculateInterestHandler(
     IInterestTaxClient interestTaxClienthttp,
     INotificationHandler notification,
     IConfiguration configuration)
 {
     _interestTaxClienthttp = interestTaxClienthttp;
     _notification          = notification;
     _configuration         = configuration;
 }
 public CalculateInterestHandlerTest()
 {
     _notification  = new NotificationHandler();
     _http          = Substitute.For <IInterestTaxClient>();
     _configuration = Substitute.For <IConfiguration>();
 }