public void ToString_ReturnsExpectedValue()
        {
            DailySchedule schedule = new DailySchedule(
                new TimeSpan(8, 30, 0),
                new TimeSpan(15, 0, 0),  // verify the schedule self orders
                new TimeSpan(12, 00, 0));

            Assert.Equal("Daily: 3 occurrences", schedule.ToString());
        }