public void LastIndex__An_Array_Can_Get_The_Last_Index_Of_An_Item()
{
var animals = new IAnimal[]
{
_dog,
_cat,
_fish
};
Assert.IsTrue(animals.LastIndex() == animals.Length - 1);
}
public void LastIndex__An_Array_Can_Get_The_Last_Index_Of_An_Empty_Array()
{
var animals = new IAnimal[0];
Assert.IsTrue(animals.LastIndex() == 0);
}