code: def testFull(self):
      g = Graph.Full(20, directed=True)
      el = g.get_edgelist()
      el.sort()
      self.assertTrue(
          g.get_edgelist()
          == [(x, y) for x in range(20) for y in range(20) if x != y]
      )
  
imports: import unittest
  from igraph import Graph, InternalError
label_desc: Use image node_id 4 for calling the GeneratorTests obj's underlying member method code with example usage: obj.testFull() without return types