code: def test_params() -> None:
      params = {"x": 1}
      trial = FixedTrial(params)
      assert trial.params == {}
  
      assert trial.suggest_float("x", 0, 10) == 1
      assert trial.params == params
  
imports: from __future__ import annotations
  import pytest
  from optuna.trial import FixedTrial
label_desc: Use image node_id 1 for calling a global function with example usage: test_params() without return types