code: def test_return_0_on_no_cache(dvc):
      o = Output(Stage(dvc), "path")
      o.use_cache = False
      assert o.get_files_number() == 0
  
file_path: dvc/tests/unit/output/test_local.py
imports: import os
  from dvc.output import Output
  from dvc.stage import Stage
  from dvc_data.hashfile.hash_info import HashInfo
  from dvc_data.hashfile.meta import Meta
label_desc: Use image node_id 5 for calling a global function with example usage: test_return_0_on_no_cache(dvc) without return types