public static Month Next(this Month month)
{
if (month == Month.December)
{
return(Month.January);
}
return(EnumNavigator <Month> .Next(month));
}
public static Month Previous(this Month month)
{
if (month == Month.January)
{
return(Month.December);
}
return(EnumNavigator <Month> .Previous(month));
}
public void Previous_NotAnEnumType_ThrowsTypeInitializationException()
{
TestDelegate executePreviousMethod = () => EnumNavigator <DateTime> .Previous(DateTime.Now);
Assert.That(executePreviousMethod, Throws.InstanceOf <TypeInitializationException>());
}
public void Previous_DayOfWeek_ReturnsCorrectNextDay(DayOfWeek current, DayOfWeek expected)
{
DayOfWeek previousDayOfWeek = EnumNavigator <DayOfWeek> .Previous(current);
Assert.That(previousDayOfWeek, Is.EqualTo(expected));
}
public void Next_DayOfWeek_ReturnsCorrectNextDay(DayOfWeek current, DayOfWeek expected)
{
DayOfWeek nextDayOfWeek = EnumNavigator <DayOfWeek> .Next(current);
Assert.That(nextDayOfWeek, Is.EqualTo(expected));
}
public static DayOfWeek Previous(this DayOfWeek dayOfWeek) => EnumNavigator <DayOfWeek> .Previous(dayOfWeek);
public static DayOfWeek Next(this DayOfWeek dayOfWeek) => EnumNavigator <DayOfWeek> .Next(dayOfWeek);
