public void TestGenusForDynamicBinding()
{
var taxonomy = new Taxonomy();
var lion = new Lion();
Assert.AreEqual("Lion genus is Panthera", taxonomy.GenusFor(lion));
var zebra = new Zebra();
Assert.AreEqual("Zebra genus is Equus", taxonomy.GenusFor(zebra));
var elephant = new Elephant();
Assert.AreEqual("Elephant genus is Loxodonta", taxonomy.GenusFor(elephant));
// The public Taxonomy.GenusFor method delegates to the best version of the private Taxonomy.GenusFor methods
// the responsibility to tell the genus for the given IAnimal.
// This shows how dynamic method binding works.
}
private string GenusFor(Lion lion)
{
return "Lion genus is " + lion.GenusName;
}