public void GetListOfEmployersAndCheckAreEqualLikeModels()
        {
            //Arrange
            Employer employer1 = new Employer()
            {
                Id   = 66,
                Name = "test",
                NIP  = "unit"
            };

            Employer employer2 = new Employer()
            {
                Id   = 67,
                Name = "test1",
                NIP  = "unit1"
            };

            var options = new DbContextOptionsBuilder <Context>()
                          .UseInMemoryDatabase(databaseName: "UsersDirectoryMVC")
                          .Options;

            using (var context = new Context(options))
            {
                //Act
                var employerRepository = new EmployerRepository(context);
                employerRepository.AddEmployer(employer1);
                employerRepository.AddEmployer(employer2);

                var listOfEmployers = employerRepository.GetAllActiveEmployers();

                //Assert
                listOfEmployers.FirstOrDefault(e => e.Id == 66).Should().Equals(employer1);
                listOfEmployers.FirstOrDefault(e => e.Id == 67).Should().Equals(employer2);
            }
        }