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