Class Foo

tests/test_config.py:546–551

@pytest.mark.skipif(sys.version_info < (3, 11), reason='requires backport pre 3.11, fully tested in pydantic core')
def test_config_validation_error_cause():
    class Foo(BaseModel):
        foo: int

        @field_validator('foo')
        def check_foo(cls, v):
            assert v > 5, 'Must be greater than 5'

    # Should be disabled by default:
    with pytest.raises(ValidationError) as exc_info: