code: def suite():
      game_suite = unittest.defaultTestLoader.loadTestsFromTestCase(
          GameTests
      )
      return unittest.TestSuite([game_suite])
  
file_path: python-igraph/tests/test_games.py
imports: import unittest
  from igraph import Graph, InternalError, Layout
label_desc: Use image node_id 1 for calling a global function with example usage: suite() and returns: unittest