code: def test_tuple_column():
      """Test `complete` output if a tuple is provided."""
      df = pd.DataFrame(
          {
              "group": [2, 1, 1],
              "item_id": [2, 1, 2],
              "item_name": ["b", "a", "b"],
              "value1": [2, 1, 3],
              "value2": [5, 4, 6],
          }
      )
  
      result = df.complete("group", ("item_id", "item_name"), sort=True)
  
      columns = ["group", "item_id", "item_name"]
      expected = (
          df.set_index(columns)
          .unstack("group")
          .stack(dropna=False)
          .reset_index()
          .reindex(columns=df.columns)
          .sort_values(columns, ignore_index=True)
      )
      assert_frame_equal(result, expected)
  
imports: from string import ascii_lowercase
  import numpy
  import pandas
  import pytest
  from hypothesis import given, settings
  from pandas.testing import assert_frame_equal
  from janitor.testing_utils.strategies import categoricaldf_strategy
label_desc: Use image node_id 27 for calling a global function with example usage: test_tuple_column() without return types