public void Test_ElementAtOrNone()
{
Assert.That(() => MaybeExtensions.ElementAtOrNone <int>(null, 0), Throws.ArgumentNullException);
Assert.That(() => Array.Empty <int>().SelectSome(x => x).ElementAtOrNone(-10), Throws.ArgumentException);
var coll = new[] { 12, 12351, 123, 11, 0, -88 };
Assert.AreEqual(coll[3], coll.ElementAtOrNone(3).Match(int.MinValue));
Assert.That(() => coll.ElementAtOrNone(6).Match(new IndexOutOfRangeException()),
Throws.InstanceOf <IndexOutOfRangeException>());
}
