# -*- coding: utf-8 -*-

import pytest

import pandas.util.testing as tm


class TestCategoricalWarnings(object):
    def test_tab_complete_warning(self, ip):
        # https://github.com/pandas-dev/pandas/issues/16409
        pytest.importorskip('IPython', minversion="6.0.0")
        from IPython.core.completer import provisionalcompleter

        code = "import pandas as pd; c = Categorical([])"
        ip.run_code(code)
        with tm.assert_produces_warning(None):
            with provisionalcompleter('ignore'):
                list(ip.Completer.completions('c.', 1))