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How to use test_check_single_index method in pandera

Best Python code snippet using pandera_python

test_model.py

Source:test_model.py

...225    schema = Schema.to_schema()226    err_msg = r"Column\s*a\s*int_column_lt_100\s*\[101\]\s*1"227    with pytest.raises(pa.errors.SchemaErrors, match=err_msg):228        schema.validate(df, lazy=True)229def test_check_single_index() -> None:230    """Test the behaviour of a check on a single index."""231    class Schema(pa.SchemaModel):232        a: Index[str]233        @pa.check("a")234        def not_dog(cls, idx: pd.Index) -> Iterable[bool]:235            # pylint:disable=no-self-argument236            assert cls is Schema237            return ~idx.str.contains("dog")238    df = pd.DataFrame(index=["cat", "dog"])239    err_msg = r"Index\s*<NA>\s*not_dog\s*\[dog\]\s*"240    with pytest.raises(pa.errors.SchemaErrors, match=err_msg):241        Schema.validate(df, lazy=True)242def test_field_and_check() -> None:243    """Test the combination of a field and a check on the same column."""...

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