code: def test_multi_objective_get_value():
      obj = objective.create_objective(["accuracy", "loss"])
      assert obj.get_value({"accuracy": 3.0, "loss": 2.0}) == -1.0
  
imports: import pytest
  import keras_tuner
  from keras_tuner.engine import objective
label_desc: Use image node_id 9 for calling a global function with example usage: test_multi_objective_get_value() without return types