code: def suite():
      is_separator_suite = (
          unittest.defaultTestLoader.loadTestsFromTestCase(
              IsSeparatorTests
          )
      )
      return unittest.TestSuite([is_separator_suite])
  
file_path: python-igraph/tests/test_separators.py
imports: import unittest
  from igraph import Graph, InternalError
label_desc: Use image node_id 2 for calling a global function with example usage: suite() and returns: unittest