public void CanReturnNullWhenTryingToDequeueFromEmptyQueue() { // Arrange AnimalNode <string> preference = new AnimalNode <string>("cat"); AnimalShelter <string> animalShelter = new AnimalShelter <string>(); // Act AnimalNode <string> dequeuedAnimal = animalShelter.DequeueAnimal(preference); // Assert Assert.Null(dequeuedAnimal); }
public void CanReturnPreferredAnimal() { // Arrange AnimalNode <string> catPreference = new AnimalNode <string>("cat"); AnimalShelter <string> animalShelter = new AnimalShelter <string>(catPreference); // Act AnimalNode <string> dequeuedAnimal = animalShelter.DequeueAnimal(catPreference); // Assert Assert.Equal("cat", dequeuedAnimal.Value); }
public void CanReturnNullIfNeitherDogNorCatPassedInAsPreferredAnimal() { // Arrange AnimalNode <string> badPreference = new AnimalNode <string>("bird"); AnimalNode <string> legitPreference = new AnimalNode <string>("cat"); AnimalShelter <string> animalShelter = new AnimalShelter <string>(); animalShelter.EnqueueAnimal(legitPreference); // Act AnimalNode <string> dequeuedAnimal = animalShelter.DequeueAnimal(badPreference); // Assert Assert.Null(dequeuedAnimal); }