code: def test_actual():
      """Test actual application module"""
      _test_module_properties(None)
  
file_path: vispy/vispy/app/tests/test_backends.py
imports: import vispy
  from vispy import keys
  from vispy.testing import requires_application, assert_in, run_tests_if_main, assert_raises
  from vispy.app import use_app, Application
  from vispy.app.backends import _template
  from vispy.util import _get_args
label_desc: Use image node_id 3 for calling a global function with example usage: test_actual() without return types