code: def test_set_index(setup, chunk_size):
      df1 = pd.DataFrame(
          [[1, 3, 3], [4, 2, 6], [7, 8, 9]],
          index=["a1", "a2", "a3"],
          columns=["x", "y", "z"],
      )
  
      df2 = md.DataFrame(df1, chunk_size=chunk_size)
  
      expected = df1.set_index("y", drop=True)
      df3 = df2.set_index("y", drop=True)
      pd.testing.assert_frame_equal(expected, df3.execute().fetch())
  
      expected = df1.set_index("y", drop=False)
      df4 = df2.set_index("y", drop=False)
      pd.testing.assert_frame_equal(expected, df4.execute().fetch())
  
      expected = df1.set_index("y")
      df2.set_index("y", inplace=True)
      pd.testing.assert_frame_equal(expected, df2.execute().fetch())
  
imports: import os
  import tempfile
  import mars
  import numpy
  import pandas
  import pytest
  from ....None import dataframe
  from ....None import tensor
  from ....utils import pd_release_version
  from ...datasource.read_csv import DataFrameReadCSV
  from ...datasource.read_sql import DataFrameReadSQL
  from ...datasource.read_parquet import DataFrameReadParquet
label_desc: Use image node_id 1 for calling a global function with example usage: test_set_index(setup, chunk_size) without return types