

def test_all_nan(self):
    s = pd.Series(['a', 'b', 'c'])
    res = to_numeric(s, errors='coerce')
    expected = pd.Series([np.nan, np.nan, np.nan])
    tm.assert_series_equal(s, expected)

dataset/ETHPy150Open pydata/pandas/pandas/tools/tests/test_util.py TestToNumeric.test_all_nan/VarMisuse@61/76 `res`->`s`