public void Cant_Add_Animal_To_Wagon_When_UsedSize_Is_Too_Big() { //Arrange Animal a = new Animal(Size.Large, Sort.Herbivore, "Giraffe"); Animal b = new Animal(Size.Large, Sort.Herbivore, "Cow"); Animal c = new Animal(Size.Small, Sort.Herbivore, "Rabbit"); bool AnimalFits = false; //Act _wagon.AddAnimalToWagon(a); _wagon.AddAnimalToWagon(b); if (_wagon.DoesAnimalFit(c) == true) { AnimalFits = true; } //Assert Assert.IsFalse(AnimalFits); }