public async void DeleteActivation_ReturnsNoContentResult_WhenServiceReturnsNull()
        {
            // Arrange
            ActivationsServiceMock
            .Setup(x => x.DeleteOneAsync(It.IsAny <string>()))
            .ReturnsAsync((Activation)null);

            // Act
            var result = await ActivationsController.DeleteOneByIdAsync("123021");

            // Assert
            Assert.IsType <NoContentResult>(result);
        }
        public async void DeleteActivation_ReturnsNoContentResult_WhenServiceReturnsDeletedActivation()
        {
            // Arrange
            var deletedActivation = TestData.Activations.ContractActivation;

            ActivationsServiceMock
            .Setup(x => x.DeleteOneAsync(It.IsAny <string>()))
            .ReturnsAsync(deletedActivation);

            // Act
            var result = await ActivationsController.DeleteOneByIdAsync("123021");

            // Assert
            Assert.IsType <NoContentResult>(result);
        }