public void But_milking_animals_for_tests_is_wasteful()
{
var mockAnimal = new FakeAnimal();
var farm = new DairyFarm(mockAnimal); //We can test the farm machinery on a MOCK animal.
// TODO Please remove the incorrect assertion.
Assert.That(farm.GetProduce(), Is.EqualTo("Pretend milk"));
Assert.That(farm.GetProduce(), Is.EqualTo("Real milk"));
}
public void A_cow_farm_gives_us_cows_milk()
{
var cow = new Cow();
var farm = new DairyFarm(cow); //The farm is 'given' the animal to be milked
// TODO Please remove the incorrect assertion.
Assert.That(farm.GetProduce(), Is.EqualTo("Cow's milk"));
Assert.That(farm.GetProduce(), Is.EqualTo("Pig's milk"));
}
public void The_same_farm_can_give_us_goats_milk_too()
{
var goat = new Goat();
var farm = new DairyFarm(goat); //This is the essence of 'dependency injection'
// TODO Please remove the incorrect assertion.
Assert.That(farm.GetProduce(), Is.EqualTo("Cow's milk"));
Assert.That(farm.GetProduce(), Is.EqualTo("Goat's milk"));
}