from pandas.core.frame import DataFrame

import pytest
import pandas.util.testing as tm


@pytest.fixture
def dataframe():
    return DataFrame({'a': [1, 2], 'b': [3, 4]})


class TestDataFrameValidate(object):
    """Tests for error handling related to data types of method arguments."""

    @pytest.mark.parametrize("func", ["query", "eval", "set_index",
                                      "reset_index", "dropna",
                                      "drop_duplicates", "sort_values"])
    @pytest.mark.parametrize("inplace", [1, "True", [1, 2, 3], 5.0])
    def test_validate_bool_args(self, dataframe, func, inplace):
        msg = "For argument \"inplace\" expected type bool"
        kwargs = dict(inplace=inplace)

        if func == "query":
            kwargs["expr"] = "a > b"
        elif func == "eval":
            kwargs["expr"] = "a + b"
        elif func == "set_index":
            kwargs["keys"] = ["a"]
        elif func == "sort_values":
            kwargs["by"] = ["a"]

        with tm.assert_raises_regex(ValueError, msg):
            getattr(dataframe, func)(**kwargs)