code: def test_suite():
      return unittest.TestLoader().loadTestsFromName(__name__)
  
imports: import psycopg2
  import psycopg2.extensions
  import unittest
  from .testutils import ConnectingTestCase, skip_before_postgres, skip_if_crdb
label_desc: Use image node_id 1 for calling a global function with example usage: test_suite() and returns: unittest