public async void GetTaskProviderById_ReturnNull()
        {
            _taskProviderRepository
            .Setup(r => r.GetById(4, It.IsAny <CancellationToken>()))
            .ReturnsAsync((TaskProvider)null);

            var service = new TaskProviderService(_taskProviderRepository.Object, _externalServiceTypeRepository.Object, _tagRepository.Object);

            var result = await service.GetTaskProviderById(4);

            Assert.Null(result);
        }
        public async void GetTaskProviderById_ReturnItem()
        {
            _taskProviderRepository
            .Setup(r => r.GetSingleBySpec(It.IsAny <TaskProviderFilterSpecification>(), It.IsAny <CancellationToken>()))
            .ReturnsAsync(new TaskProvider {
                Id = 1, Name = "GeneratorProvider1"
            });

            var service = new TaskProviderService(_taskProviderRepository.Object, _externalServiceTypeRepository.Object, _tagRepository.Object);

            var result = await service.GetTaskProviderById(1);

            Assert.NotNull(result);
            Assert.Equal("GeneratorProvider1", result.Name);
        }