public async void Get_null_record()
{
var mock = new ServiceMockFacade <IApiKeyRepository>();
mock.RepositoryMock.Setup(x => x.Get(It.IsAny <string>())).Returns(Task.FromResult <ApiKey>(null));
var service = new ApiKeyService(mock.LoggerMock.Object,
mock.RepositoryMock.Object,
mock.ModelValidatorMockFactory.ApiKeyModelValidatorMock.Object,
mock.BOLMapperMockFactory.BOLApiKeyMapperMock,
mock.DALMapperMockFactory.DALApiKeyMapperMock);
ApiApiKeyResponseModel response = await service.Get(default(string));
response.Should().BeNull();
mock.RepositoryMock.Verify(x => x.Get(It.IsAny <string>()));
}