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92 lines
3.3 KiB
Python
92 lines
3.3 KiB
Python
import pytest
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def test_inheritance(msg):
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from pybind11_tests import Pet, Dog, Rabbit, Hamster, Chimera, dog_bark, pet_name_species
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roger = Rabbit('Rabbit')
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assert roger.name() + " is a " + roger.species() == "Rabbit is a parrot"
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assert pet_name_species(roger) == "Rabbit is a parrot"
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polly = Pet('Polly', 'parrot')
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assert polly.name() + " is a " + polly.species() == "Polly is a parrot"
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assert pet_name_species(polly) == "Polly is a parrot"
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molly = Dog('Molly')
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assert molly.name() + " is a " + molly.species() == "Molly is a dog"
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assert pet_name_species(molly) == "Molly is a dog"
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fred = Hamster('Fred')
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assert fred.name() + " is a " + fred.species() == "Fred is a rodent"
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assert dog_bark(molly) == "Woof!"
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with pytest.raises(TypeError) as excinfo:
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dog_bark(polly)
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assert msg(excinfo.value) == """
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dog_bark(): incompatible function arguments. The following argument types are supported:
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1. (arg0: m.Dog) -> str
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Invoked with: <m.Pet object at 0>
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"""
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with pytest.raises(TypeError) as excinfo:
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Chimera("lion", "goat")
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assert "No constructor defined!" in str(excinfo.value)
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def test_automatic_upcasting():
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from pybind11_tests import return_class_1, return_class_2, return_class_n, return_none
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assert type(return_class_1()).__name__ == "DerivedClass1"
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assert type(return_class_2()).__name__ == "DerivedClass2"
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assert type(return_none()).__name__ == "NoneType"
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# Repeat these a few times in a random order to ensure no invalid caching
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# is applied
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assert type(return_class_n(1)).__name__ == "DerivedClass1"
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assert type(return_class_n(2)).__name__ == "DerivedClass2"
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assert type(return_class_n(0)).__name__ == "BaseClass"
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assert type(return_class_n(2)).__name__ == "DerivedClass2"
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assert type(return_class_n(2)).__name__ == "DerivedClass2"
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assert type(return_class_n(0)).__name__ == "BaseClass"
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assert type(return_class_n(1)).__name__ == "DerivedClass1"
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def test_isinstance():
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from pybind11_tests import test_isinstance, Pet, Dog
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objects = [tuple(), dict(), Pet("Polly", "parrot")] + [Dog("Molly")] * 4
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expected = (True, True, True, True, True, False, False)
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assert test_isinstance(objects) == expected
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def test_holder():
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from pybind11_tests import test_mismatched_holder_type_1, test_mismatched_holder_type_2
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with pytest.raises(RuntimeError) as excinfo:
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test_mismatched_holder_type_1()
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assert str(excinfo.value) == ("generic_type: type \"MismatchDerived1\" does not have "
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"a non-default holder type while its base "
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"\"MismatchBase1\" does")
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with pytest.raises(RuntimeError) as excinfo:
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test_mismatched_holder_type_2()
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assert str(excinfo.value) == ("generic_type: type \"MismatchDerived2\" has a "
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"non-default holder type while its base "
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"\"MismatchBase2\" does not")
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def test_inheritance_override_def_static():
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"""#511: problem with inheritance + overwritten def_static"""
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from pybind11_tests import MyBase, MyDerived
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b = MyBase.make()
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d1 = MyDerived.make2()
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d2 = MyDerived.make()
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assert isinstance(b, MyBase)
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assert isinstance(d1, MyDerived)
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assert isinstance(d2, MyDerived)
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