public async void Delete() { var mock = new ServiceMockFacade <ICultureRepository>(); var model = new ApiCultureRequestModel(); mock.RepositoryMock.Setup(x => x.Delete(It.IsAny <string>())).Returns(Task.CompletedTask); var service = new CultureService(mock.LoggerMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.CultureModelValidatorMock.Object, mock.BOLMapperMockFactory.BOLCultureMapperMock, mock.DALMapperMockFactory.DALCultureMapperMock, mock.BOLMapperMockFactory.BOLProductModelProductDescriptionCultureMapperMock, mock.DALMapperMockFactory.DALProductModelProductDescriptionCultureMapperMock); ActionResponse response = await service.Delete(default(string)); response.Should().NotBeNull(); mock.RepositoryMock.Verify(x => x.Delete(It.IsAny <string>())); mock.ModelValidatorMockFactory.CultureModelValidatorMock.Verify(x => x.ValidateDeleteAsync(It.IsAny <string>())); }