def test_Happy_path_dogs_dequeue():
shelter = Animal_Shelter()
shelter.enqueue('matrix', 'dog')
shelter.enqueue('hunter', 'dog')
actual = shelter.dequeue('dog')
expected = 'matrix'
assert actual == expected
def test_edge_case_new_type():
shelter = Animal_Shelter()
shelter.enqueue('max', 'DOG')
shelter.enqueue('lolo', 'CAT')
actual = shelter.dequeue('mouse')
expected = None
assert actual == expected
def test_fail_capital_letter_dequeue():
shelter = Animal_Shelter()
shelter.enqueue('matrix', 'DOG')
shelter.enqueue('max', 'DOG')
actual = shelter.dequeue('DOG')
expected = 'matrix'
assert actual == expected
def test_fail_capital_letter_dequeue():
shelter = Animal_Shelter()
shelter.enqueue('lolo', 'CAT')
shelter.enqueue('blacky', 'CAT')
actual = shelter.dequeue('CAT')
expected = 'lolo'
assert actual == expected
def test_Happy_path_cats_dequeue():
shelter = Animal_Shelter()
shelter.enqueue('sherry', 'cat')
shelter.enqueue('lolo', 'cat')
actual = shelter.dequeue('cat')
expected = 'sherry'
assert actual == expected
def test_Happy_path_cats_enqueue():
shelter = Animal_Shelter()
shelter.enqueue('sherry', 'cat')
shelter.enqueue('lolo', 'cat')
actual = shelter.cats.__str__()
expected = '<sherry-><lolo->None'
assert actual == expected
def test_Happy_path_dogs_enqueue():
shelter = Animal_Shelter()
shelter.enqueue('poppy', 'dog')
shelter.enqueue('matrix', 'dog')
actual = shelter.dogs.__str__()
expected = '<poppy-><matrix->None'
assert actual == expected