code: def test_hunt_no_prior(one_experiment, capsys):
      """Test at least one prior is specified"""
      orion.core.cli.main(["hunt", "-n", "test", "./black_box.py"])
  
      captured = capsys.readouterr().err
  
      assert "No prior found" in captured
      assert "Traceback" not in captured
  
imports: import pytest
  import orion.core.cli
label_desc: Use image node_id 1 for calling a global function with example usage: test_hunt_no_prior(one_experiment, capsys) without return types