public void StoreAndRetrieveEmployeesByCompany()
        {
            var employeeRepository = new InMemoryEmployeeRepository();
            var hoteliersInc       = Guid.NewGuid();
            var staff2PleaseU      = Guid.NewGuid();
            var bob   = Guid.NewGuid();
            var geoff = Guid.NewGuid();
            var lisa  = Guid.NewGuid();

            employeeRepository.Add(hoteliersInc, bob);
            employeeRepository.Add(hoteliersInc, geoff);
            employeeRepository.Add(staff2PleaseU, lisa);

            Assert.Equal(staff2PleaseU, employeeRepository.GetCompanyFor(lisa));
        }
        public void StoreEmployees()
        {
            var employee = new Employee();

            _repository.Add(employee);

            _employees.Received().Add(employee);
        }