public List <IAnimal> Behave(IAnimal animal, IEnumerable <IAnimal> animals)
{
animals = TryDie(animal, animals);
animals = TryGiveBirth(animal, animals);
if (animal.IsPredator)
{
animal.Coordinates = TryChasePrey(animal, animals);
animal.Health = _healthLogic.DecreaseHealth(animal.Health);
animals = TryEatPrey(animal, animals);
}
else
{
animal.Coordinates = TryEscape(animal, animals);
animal.Health = _healthLogic.DecreaseHealth(animal.Health);
}
return(animals.ToList());
}
public void DecreaseHealth_When_PositiveHealth_Expect_LessHealth()
{
//Arrange
decimal value = 5m;
//Act
var result = _classUnderTest.DecreaseHealth(value);
//Assert
Assert.Greater(value, result);
Assert.AreEqual(result, 4.5);
Assert.AreEqual(result.GetType(), typeof(decimal));
}