How to use test_register_from_parametrized_dtype_union method in pandera

Best Python code snippet using pandera_python

test_engine.py

Source:test_engine.py

...46    with pytest.raises(47        TypeError, match="Data type 'foo' not understood by FakeEngine"48    ):49        engine.dtype("foo")50def test_register_from_parametrized_dtype_union(engine: Engine):51    """Test that a dtype with from_parametrized_dtype and Union annotation52    can be registered.53    """54    @engine.register_dtype55    class _Dtype(BaseDataType):56        @classmethod57        def from_parametrized_dtype(cls, x: Union[int, str]):58            return x59    assert engine.dtype(42) == 4260def test_register_notclassmethod_from_parametrized_dtype(engine: Engine):61    """Test that a dtype with invalid from_parametrized_dtype62    cannot be registered.63    """64    with pytest.raises(...

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