Exemplo n.º 1
0
def test_inheritance(msg):
    roger = m.Rabbit('Rabbit')
    assert roger.name() + " is a " + roger.species() == "Rabbit is a parrot"
    assert m.pet_name_species(roger) == "Rabbit is a parrot"

    polly = m.Pet('Polly', 'parrot')
    assert polly.name() + " is a " + polly.species() == "Polly is a parrot"
    assert m.pet_name_species(polly) == "Polly is a parrot"

    molly = m.Dog('Molly')
    assert molly.name() + " is a " + molly.species() == "Molly is a dog"
    assert m.pet_name_species(molly) == "Molly is a dog"

    fred = m.Hamster('Fred')
    assert fred.name() + " is a " + fred.species() == "Fred is a rodent"

    assert m.dog_bark(molly) == "Woof!"

    with pytest.raises(TypeError) as excinfo:
        m.dog_bark(polly)
    assert msg(excinfo.value) == """
        dog_bark(): incompatible function arguments. The following argument types are supported:
            1. (arg0: m.class_.Dog) -> str

        Invoked with: <m.class_.Pet object at 0>
    """

    with pytest.raises(TypeError) as excinfo:
        m.Chimera("lion", "goat")
    assert "No constructor defined!" in str(excinfo.value)
Exemplo n.º 2
0
def test_isinstance():
    objects = [tuple(), dict(), m.Pet("Polly", "parrot")
               ] + [m.Dog("Molly")] * 4
    expected = (True, True, True, True, True, False, False)
    assert m.check_instances(objects) == expected