public void GetBeginHour_WhenCalled_ReturnsBeginHourInDay(DayOfWeek dayOfWeek)
 {
     workScheduleFixture.DefineRange(dayOfWeek, 9, 17, WorkSchedule.State.Work);
     Expect(() => workScheduleFixture.GetStartHour(dayOfWeek), Is.EqualTo(9));
 }