def test_fill_value_when_combine_const(self): # GH12723 dat = np.array([0, 1, np.nan, 3, 4, 5], dtype='float') df = SparseDataFrame({'foo': dat}, index=range(6)) exp = df.fillna(0).add(2) res = df.add(2, fill_value=0) tm.assert_sp_frame_equal(res, exp)