code: def suite():
      edge_suite = unittest.defaultTestLoader.loadTestsFromTestCase(
          EdgeTests
      )
      es_suite = unittest.defaultTestLoader.loadTestsFromTestCase(
          EdgeSeqTests
      )
      return unittest.TestSuite([edge_suite, es_suite])
  
imports: import unittest
  from igraph import Graph, Edge, EdgeSeq, VertexSeq
  from .utils import is_pypy
label_desc: Use image node_id 1 for calling a global function with example usage: suite() and returns: unittest