code: def test_index_col(self):
      file_path = os.path.join(
          self.resource_path, "orca/data/csv/morgage1.csv"
      )
      data_shard = zoo.orca.data.pandas.read_csv(
          file_path, index_col="ID"
      )
      data = data_shard.collect()
      df = data[0]
      assert 100529 in df.index
  
imports: import tempfile
  import os.path
  import pytest
  from unittest import TestCase
  import shutil
  import zoo.orca.data
  import zoo.orca.data.pandas
  from zoo.orca import OrcaContext
  from zoo.common.nncontext import *
  from zoo.orca.data.image import write_tfrecord, read_tfrecord
label_desc: Use image node_id 6 for calling the TestSparkBackend obj's underlying member method code with example usage: obj.test_index_col() without return types