public void FindAllNoneFoundTest()
        {
            //arrange
            List <ContactResponseDTO> contactResponseDTOs = new List <ContactResponseDTO>();

            contactResponseDTOs.Add(contactResponseDTO);

            var service = new ContactsService(_mockContactsRepo.Object, _mockContactsMapper.Object);

            //act
            var actual = service.FindAll();

            //assert
            Assert.IsNull(actual);
        }
        public void FindAllHappyPathTest()
        {
            //arrange
            List <ContactResponseDTO> contactResponseDTOs = new List <ContactResponseDTO>();

            contactResponseDTOs.Add(contactResponseDTO);

            _mockContactsRepo.Setup(r => r.FindAll()).Returns(new List <ContactsEntity>());
            _mockContactsMapper.Setup(r => r.convertEntityToDTO(It.IsAny <ContactsEntity>())).Returns(contactResponseDTO);

            var service = new ContactsService(_mockContactsRepo.Object, _mockContactsMapper.Object);

            //act
            var actual = service.FindAll();

            //assert
            Assert.IsNotEmpty(contactResponseDTOs);
        }