code: def test_get_best_step_return_zero():
      assert (
          tuner_utils.get_best_step(
              [{"val_loss": 1}, {"val_loss": 2}],
              obj_module.Objective("val_loss", "min"),
          )
          == 0
      )
  
file_path: keras-tuner/keras_tuner/engine/tuner_utils_test.py
imports: import os
  import numpy
  import pytest
  from keras_tuner.backend import keras
  from keras_tuner.engine import objective
  from keras_tuner.engine import tuner_utils
label_desc: Use image node_id 9 for calling a global function with example usage: test_get_best_step_return_zero() without return types