'Verify adding new column with no headers.'

def test_add_column_no_data_no_headers(self):

    new_col = ('reitz', 'monke')
    data.append_col(new_col)
    self.assertEqual(data[0], tuple([new_col[0]]))
    self.assertEqual(data.width, 1)
    self.assertEqual(data.height, len(new_col))
