public void SortByTest()
{
DateTime now = ClockProxy.Clock.Now;
SchoolDay schoolDay = new SchoolDay(now);
TimePeriodCollection timePeriods = new TimePeriodCollection();
// start
timePeriods.Add(schoolDay.Lesson4);
timePeriods.Add(schoolDay.Break3);
timePeriods.Add(schoolDay.Lesson3);
timePeriods.Add(schoolDay.Break2);
timePeriods.Add(schoolDay.Lesson2);
timePeriods.Add(schoolDay.Break1);
timePeriods.Add(schoolDay.Lesson1);
timePeriods.SortBy(TimePeriodStartComparer.Comparer);
Assert.Equal(timePeriods[0], schoolDay.Lesson1);
Assert.Equal(timePeriods[1], schoolDay.Break1);
Assert.Equal(timePeriods[2], schoolDay.Lesson2);
Assert.Equal(timePeriods[3], schoolDay.Break2);
Assert.Equal(timePeriods[4], schoolDay.Lesson3);
Assert.Equal(timePeriods[5], schoolDay.Break3);
Assert.Equal(timePeriods[6], schoolDay.Lesson4);
timePeriods.SortReverseBy(TimePeriodStartComparer.Comparer);
Assert.Equal(timePeriods[0], schoolDay.Lesson4);
Assert.Equal(timePeriods[1], schoolDay.Break3);
Assert.Equal(timePeriods[2], schoolDay.Lesson3);
Assert.Equal(timePeriods[3], schoolDay.Break2);
Assert.Equal(timePeriods[4], schoolDay.Lesson2);
Assert.Equal(timePeriods[5], schoolDay.Break1);
Assert.Equal(timePeriods[6], schoolDay.Lesson1);
// end
timePeriods.Clear();
timePeriods.AddAll(schoolDay);
timePeriods.SortReverseBy(TimePeriodEndComparer.Comparer);
Assert.Equal(timePeriods[0], schoolDay.Lesson4);
Assert.Equal(timePeriods[1], schoolDay.Break3);
Assert.Equal(timePeriods[2], schoolDay.Lesson3);
Assert.Equal(timePeriods[3], schoolDay.Break2);
Assert.Equal(timePeriods[4], schoolDay.Lesson2);
Assert.Equal(timePeriods[5], schoolDay.Break1);
Assert.Equal(timePeriods[6], schoolDay.Lesson1);
timePeriods.SortBy(TimePeriodEndComparer.Comparer);
Assert.Equal(timePeriods[0], schoolDay.Lesson1);
Assert.Equal(timePeriods[1], schoolDay.Break1);
Assert.Equal(timePeriods[2], schoolDay.Lesson2);
Assert.Equal(timePeriods[3], schoolDay.Break2);
Assert.Equal(timePeriods[4], schoolDay.Lesson3);
Assert.Equal(timePeriods[5], schoolDay.Break3);
Assert.Equal(timePeriods[6], schoolDay.Lesson4);
// duration
timePeriods.Clear();
TimeSpan oneHour = new TimeSpan(1, 0, 0);
TimeSpan twoHours = new TimeSpan(2, 0, 0);
TimeSpan threeHours = new TimeSpan(3, 0, 0);
TimeSpan fourHours = new TimeSpan(4, 0, 0);
timePeriods.Add(new TimeRange(now, oneHour));
timePeriods.Add(new TimeRange(now, twoHours));
timePeriods.Add(new TimeRange(now, threeHours));
timePeriods.Add(new TimeRange(now, fourHours));
timePeriods.SortReverseBy(TimePeriodDurationComparer.Comparer);
Assert.Equal(fourHours, timePeriods[0].Duration);
Assert.Equal(threeHours, timePeriods[1].Duration);
Assert.Equal(twoHours, timePeriods[2].Duration);
Assert.Equal(oneHour, timePeriods[3].Duration);
timePeriods.SortBy(TimePeriodDurationComparer.Comparer);
Assert.Equal(oneHour, timePeriods[0].Duration);
Assert.Equal(twoHours, timePeriods[1].Duration);
Assert.Equal(threeHours, timePeriods[2].Duration);
Assert.Equal(fourHours, timePeriods[3].Duration);
} // SortByTest