public void WaterHoleAddFoodCannotDecreaseFoodAmountBeyond0()
{
var wateringhole = new WateringHole();
wateringhole.AddFood(10);
Assert.AreEqual(10, wateringhole.FoodAmount);
wateringhole.AddFood(-20);
Assert.AreEqual(0, wateringhole.FoodAmount);
}
public void WaterHoleAddFoodDecreasesFoodAmountWhenNegativeValueIsAdded()
{
var wateringhole = new WateringHole();
wateringhole.AddFood(10);
Assert.AreEqual(10, wateringhole.FoodAmount);
wateringhole.AddFood(-5);
Assert.AreEqual(5, wateringhole.FoodAmount);
}
public void WateringHoleAddFoodIncreasesFoodAmount()
{
var wateringhole = new WateringHole();
Assert.AreEqual(0, wateringhole.FoodAmount);
wateringhole.AddFood(10);
Assert.AreEqual(10, wateringhole.FoodAmount);
wateringhole.AddFood(20);
Assert.AreEqual(30, wateringhole.FoodAmount);
}
public void WaterholeCanNotBeEatenByPredatorWithFood()
{
var wateringhole = new WateringHole();
var species = new MockSpecies();
wateringhole.AddFood(10);
species.IsPredator = true;
Assert.IsFalse(wateringhole.CanBeEatenBy(species));
Assert.AreEqual(10, wateringhole.FoodAmount);
}
public void WaterHoleEatCannotEatAsPredator()
{
var wateringhole = new WateringHole();
var species = new MockSpecies();
species.IsPredator = true;
wateringhole.AddFood(10);
Assert.ThrowsException <InvalidOperationException>(() => wateringhole.Eat(species));
Assert.AreEqual(10, wateringhole.FoodAmount);
}
public void WaterHoleEatCanEat()
{
var wateringhole = new WateringHole();
var species = new MockSpecies();
species.IsPredator = false;
wateringhole.AddFood(10);
var result = wateringhole.Eat(species);
Assert.AreEqual(9, wateringhole.FoodAmount);
Assert.AreEqual(1, result);
}
public void WaterHoleTryEatCanEat()
{
var wateringhole = new WateringHole();
var species = new MockSpecies();
species.IsPredator = false;
wateringhole.AddFood(10);
Assert.AreEqual(10, wateringhole.FoodAmount);
var result = wateringhole.TryEat(species, out int food);
Assert.AreEqual(1, food);
Assert.AreEqual(9, wateringhole.FoodAmount);
Assert.IsTrue(result);
}
