public void DetailsAtExceptionTest()
        {
            EmployeeContainer ec = new EmployeeContainer("test", "DetailsAtExceptionTestLog");

            ec.DetailsAt(-1);
        }
        public void DetailsAtNormalTest()
        {
            EmployeeContainer ec = new EmployeeContainer("test", "DetailsAtNormalTestLog");
            ParttimeEmployee pe = new ParttimeEmployee(
                new DateTime(1999, 12, 31),
                new DateTime(2000, 1, 1),
                10,
                "Testy",
                "Peoper",
                new DateTime(1950, 1, 1),
                "111222333"
            );

            ec.Add(pe);

            Assert.AreEqual(
                pe.Details(),
                ec.DetailsAt(0)
            );
        }