code: def test_wrap_experiment_raises_on_empty_params():
      prefix = "wrap_exp_test_prefix3"
      with pytest.raises(ValueError, match="named 'ctxt'"):
  
          @wrap_experiment(prefix=prefix)
          def _test_exp():
              pass
  
imports: import os
  import pathlib
  import shutil
  import subprocess
  import sys
  import tempfile
  import textwrap
  import pytest
  from garage.experiment.experiment import wrap_experiment
label_desc: Use image node_id 9 for calling a global function with example usage: test_wrap_experiment_raises_on_empty_params() without return types