public void DequeueAnyTest()
{
var shelter = new Question_3_6.AnimalShelter();
shelter.Enqueue(new Question_3_6.Dog(1)); // Dog 1
shelter.Enqueue(new Question_3_6.Cat(2)); // Dog 1 -> Cat 2
shelter.Enqueue(new Question_3_6.Cat(3)); // Dog 1 -> Cat 2 -> Cat 3
shelter.Enqueue(new Question_3_6.Dog(4)); // Dog 1 -> Cat 2 -> Cat 3 -> Dog 4
Question_3_6.Animal outputAnimal = shelter.DequeueAny();
Assert.IsTrue(outputAnimal is Question_3_6.Dog, "Incorrect Animial type returned - expecting Dog.");
Assert.AreEqual(1, outputAnimal.Id, "Incorrect Animial returned.");
outputAnimal = shelter.DequeueAny();
Assert.IsTrue(outputAnimal is Question_3_6.Cat, "Incorrect Animial type returned - expecting Cat.");
Assert.AreEqual(2, outputAnimal.Id, "Incorrect Animial returned.");
outputAnimal = shelter.DequeueAny();
Assert.IsTrue(outputAnimal is Question_3_6.Cat, "Incorrect Animial type returned - expecting Cat.");
Assert.AreEqual(3, outputAnimal.Id, "Incorrect Animial returned.");
outputAnimal = shelter.DequeueAny();
Assert.IsTrue(outputAnimal is Question_3_6.Dog, "Incorrect Animial type returned - expecting Dog.");
Assert.AreEqual(4, outputAnimal.Id, "Incorrect Animial returned.");
try
{
shelter.DequeueAny();
Assert.Fail("Empty shelter check failed.");
}
catch (InvalidOperationException e)
{
Assert.AreEqual("No animals in the shelter.", e.Message, "Incorrect exception caught.");
}
}
public void DequeueCatTest()
{
var shelter = new Question_3_6.AnimalShelter();
shelter.Enqueue(new Question_3_6.Dog(1)); // Dog 1
shelter.Enqueue(new Question_3_6.Cat(2)); // Dog 1 -> Cat 2
shelter.Enqueue(new Question_3_6.Cat(3)); // Dog 1 -> Cat 2 -> Cat 3
shelter.Enqueue(new Question_3_6.Dog(4)); // Dog 1 -> Cat 2 -> Cat 3 -> Dog 4
shelter.Enqueue(new Question_3_6.Dog(5)); // Dog 1 -> Cat 2 -> Cat 3 -> Dog 4 -> Dog 5
shelter.Enqueue(new Question_3_6.Cat(6)); // Dog 1 -> Cat 2 -> Cat 3 -> Dog 4 -> Dog 5 -> Cat 6
Assert.AreEqual(2, shelter.DequeueCat().Id, "Incorrect Animial returned.");
Assert.AreEqual(3, shelter.DequeueCat().Id, "Incorrect Animial returned.");
Assert.AreEqual(6, shelter.DequeueCat().Id, "Incorrect Animial returned.");
try
{
shelter.DequeueCat();
Assert.Fail("No cats check failed.");
}
catch (InvalidOperationException e)
{
Assert.AreEqual("No cats in the shelter.", e.Message, "Incorrect exception caught.");
}
}