public static T NextEnum <T>() where T : struct, IConvertible
{
if (!typeof(T).IsEnum)
{
throw new ArgumentException("T must be an enumerated type");
}
Type etype = typeof(T);
T[] vals = etype.GetEnumValues().Cast <T>().ToArray();
return(RandomArray.Pick(vals));
}
public void TestPick()
{
int[] listEmpty = { };
int value = RandomArray.Pick(listEmpty);
Assert.True(value == 0);
int[] array = { 1, 2 };
value = RandomArray.Pick(array);
Assert.True(value == 1 || value == 2);
List <int> list = new List <int>();
Assert.Equal(0, RandomArray.Pick(list));
list.Add(1);
list.Add(2);
value = RandomArray.Pick(array);
Assert.True(value == 1 || value == 2);
}