Method test_hash_default

tests/test_dunders.py:605–617

Classes are not hashable by default.

(self)

        assert hash(a) != hash(b)

    def test_hash_default(self):
        """
        Classes are not hashable by default.
        """
        C = make_class("C", {})

        with pytest.raises(TypeError) as e:
            hash(C())

        assert e.value.args[0] in (
            "'C' objects are unhashable",  # PyPy
            "unhashable type: 'C'",  # CPython
        )

    def test_cache_hashing(self):
        """