code: def test_source_create_non_existing():
      with pytest.raises(ValueError):
          Source.create("doesnotexist.py")
  
imports: import os.path
  import os
  from pathlib import Path
  import mock
  import pytest
  from sacred.dependencies import PEP440_VERSION_PATTERN, PackageDependency, Source, gather_sources_and_dependencies, get_digest, get_py_file_if_possible, is_local_source
  import sacred.optional
label_desc: Use image node_id 5 for calling a global function with example usage: test_source_create_non_existing() without return types