How to test a class' inherited methods in pytest

Question

house.py:

class House:
    def is_habitable(self):
        return True

    def is_on_the_ground(self):
        return True

Answer 1

One way to do this would be to use the fixture name house for all test methods (even if it's testing a TreeHouse), and override its value in each test context:

class TestTreeHouse(TestHouse):
    @pytest.fixture
    def house(self, tree_house):
        return tree_house

    def test_groundedness(self, house):
        assert not house.is_on_the_ground()

Also note TestTreeHouse inherits from TestHouse. Since pytest merely enumerates methods of classes (i.e. there is no "registration" done with, say, a @pytest.test() decorator), all tests defined in TestHouse will be discovered in subclasses of it, without any further intervention.