code: def test_init_drift_thresholder():
      """Test init method of Drift_thresholder class."""
      drift_thresholder = Drift_thresholder()
      assert drift_thresholder.threshold == 0.6
      assert not drift_thresholder.inplace
      assert drift_thresholder.verbose
      assert drift_thresholder.to_path == "save"
      assert drift_thresholder._Drift_thresholder__Ddrifts == {}
      assert not drift_thresholder._Drift_thresholder__fitOK
  
imports: import pytest
  from mlbox.preprocessing.drift_thresholder import Drift_thresholder
  from mlbox.preprocessing.reader import Reader
label_desc: Use image node_id 1 for calling a global function with example usage: test_init_drift_thresholder() without return types