public void TestGetIntershipById()
        {
            // arrange
            var id = 1;
            var intershipService          = new InternshipService(_intershipRepository);
            var intershipRepositoryResult = getIntershipRepositoryResult();

            _intershipRepository.Get(id).Returns(intershipRepositoryResult);

            // act
            var result = intershipService.GetById(id);

            // assert
            Assert.AreEqual(expected: intershipRepositoryResult, actual: result);
        }