code: def test_ad_config_init():
      """Tests init of the `ADConfig`."""
      ad_config = ADConfig()
      assert ad_config.volatility_features_list is None
      assert ad_config.coverage_grid is None
      assert ad_config.min_admissible_value is None
      assert ad_config.max_admissible_value is None
      assert ad_config.objective is None
      assert ad_config.target_precision is None
      assert ad_config.target_recall is None
      assert ad_config.soft_window_size is None
      assert ad_config.target_anomaly_percent is None
      assert ad_config.variance_scaling is None
  
file_path: greykite/greykite/tests/detection/detector/test_config.py
imports: import json
  import pytest
  from greykite.detection.detector.config import ADConfig
  from greykite.detection.detector.config import assert_equal_ad_config
  from greykite.detection.detector.config_utils import AD_CONFIG_JSON_COMPLETE
  from greykite.detection.detector.config_utils import AD_CONFIG_JSON_DEFAULT
  from greykite.detection.detector.config_utils import AD_CONFIG_JSON_PARTIAL
label_desc: Use image node_id 1 for calling a global function with example usage: test_ad_config_init() without return types