code: def test_setting(self):
      self.assertEqual(len(self.instruments_d), 1)
      self.assertGreater(len(self.cal), 0)
  
file_path: qlib/tests/ops/test_elem_operator.py
imports: import unittest
  import numpy
  import pytest
  from qlib.data import DatasetProvider
  from qlib.data.data import ExpressionD
  from qlib.tests import TestOperatorData, TestMockData, MOCK_DF
  from qlib.config import C
label_desc: Use image node_id 1 for calling the TestOperatorDataSetting obj's underlying member method code with example usage: obj.test_setting() without return types