code: def test_merge_indexes_and_columns_on(left_df, right_df, on, how):
      # Construct expected result
      expected = compute_expected(left_df, right_df, on=on, how=how)
  
      # Perform merge
      result = left_df.merge(right_df, on=on, how=how)
      tm.assert_frame_equal(result, expected, check_like=True)
  
file_path: pandas/pandas/tests/reshape/merge/test_merge_index_as_string.py
imports: import numpy
  import pytest
  from pandas import DataFrame
  import pandas._testing
label_desc: Use image node_id 6 for calling a global function with example usage: test_merge_indexes_and_columns_on(left_df, right_df, on, how) without return types