code: def test_suite():
      return unittest.makeSuite(CCompilerTestCase)
  
imports: import os
  import unittest
  from test.test_support import captured_stdout
  from distutils.ccompiler import gen_lib_options, CCompiler, get_default_compiler
  from distutils.sysconfig import customize_compiler
  from distutils import debug
  from distutils.tests import support
label_desc: Use image node_id 1 for calling a global function with example usage: test_suite() and returns: unittest