public async void Delete()
        {
            var mock  = new ServiceMockFacade <IMessengerRepository>();
            var model = new ApiMessengerRequestModel();

            mock.RepositoryMock.Setup(x => x.Delete(It.IsAny <int>())).Returns(Task.CompletedTask);
            var service = new MessengerService(mock.LoggerMock.Object,
                                               mock.RepositoryMock.Object,
                                               mock.ModelValidatorMockFactory.MessengerModelValidatorMock.Object,
                                               mock.BOLMapperMockFactory.BOLMessengerMapperMock,
                                               mock.DALMapperMockFactory.DALMessengerMapperMock);

            ActionResponse response = await service.Delete(default(int));

            response.Should().NotBeNull();
            mock.RepositoryMock.Verify(x => x.Delete(It.IsAny <int>()));
            mock.ModelValidatorMockFactory.MessengerModelValidatorMock.Verify(x => x.ValidateDeleteAsync(It.IsAny <int>()));
        }
        public async void Delete_NoErrorsOccurred_ShouldReturnResponse()
        {
            var mock  = new ServiceMockFacade <IMessengerService, IMessengerRepository>();
            var model = new ApiMessengerServerRequestModel();

            mock.RepositoryMock.Setup(x => x.Delete(It.IsAny <int>())).Returns(Task.CompletedTask);
            var service = new MessengerService(mock.LoggerMock.Object,
                                               mock.MediatorMock.Object,
                                               mock.RepositoryMock.Object,
                                               mock.ModelValidatorMockFactory.MessengerModelValidatorMock.Object,
                                               mock.DALMapperMockFactory.DALMessengerMapperMock);

            ActionResponse response = await service.Delete(default(int));

            response.Should().NotBeNull();
            response.Success.Should().BeTrue();
            mock.RepositoryMock.Verify(x => x.Delete(It.IsAny <int>()));
            mock.ModelValidatorMockFactory.MessengerModelValidatorMock.Verify(x => x.ValidateDeleteAsync(It.IsAny <int>()));
            mock.MediatorMock.Verify(x => x.Publish(It.IsAny <MessengerDeletedNotification>(), It.IsAny <CancellationToken>()));
        }
        public async void Delete_ErrorsOccurred_ShouldReturnErrorResponse()
        {
            var mock          = new ServiceMockFacade <IMessengerService, IMessengerRepository>();
            var model         = new ApiMessengerServerRequestModel();
            var validatorMock = new Mock <IApiMessengerServerRequestModelValidator>();

            validatorMock.Setup(x => x.ValidateDeleteAsync(It.IsAny <int>())).Returns(Task.FromResult(new FluentValidation.Results.ValidationResult(new List <ValidationFailure>()
            {
                new ValidationFailure("text", "test")
            })));
            var service = new MessengerService(mock.LoggerMock.Object,
                                               mock.MediatorMock.Object,
                                               mock.RepositoryMock.Object,
                                               validatorMock.Object,
                                               mock.DALMapperMockFactory.DALMessengerMapperMock);

            ActionResponse response = await service.Delete(default(int));

            response.Should().NotBeNull();
            response.Success.Should().BeFalse();
            validatorMock.Verify(x => x.ValidateDeleteAsync(It.IsAny <int>()));
            mock.MediatorMock.Verify(x => x.Publish(It.IsAny <MessengerDeletedNotification>(), It.IsAny <CancellationToken>()), Times.Never());
        }