code: def test_read_local_json(self):
      file_path = os.path.join(self.resource_path, "orca/data/json")
      data_shard = bigdl.orca.data.pandas.read_json(
          file_path, orient="columns", lines=True
      )
      data = data_shard.collect()
      assert len(data) == 2, "number of shard should be 2"
      df = data[0]
      assert "value" in df.columns, "value is not in columns"
  
file_path: BigDL/python/orca/test/bigdl/orca/data/test_pandas_backend.py
imports: import os.path
  import shutil
  import pytest
  from unittest import TestCase
  import bigdl.orca.data
  import bigdl.orca.data.pandas
  from bigdl.orca import OrcaContext
  from bigdl.dllib.nncontext import *
label_desc: Use image node_id 4 for calling the TestXShardsPandasBackend obj's underlying member method code with example usage: obj.test_read_local_json() without return types