code: def test_suite():
      return unittest.makeSuite(CommandTestCase)
  
imports: import unittest
  import os
  from test.test_support import captured_stdout, run_unittest
  from distutils.cmd import Command
  from distutils.dist import Distribution
  from distutils.errors import DistutilsOptionError
  from distutils import debug
label_desc: Use image node_id 1 for calling a global function with example usage: test_suite() and returns: unittest