code: def test_with_closed(self):
      def f():
          with self.conn:
              pass
  
      self.conn.close()
      self.assertRaises(psycopg2.InterfaceError, f)
  
imports: import psycopg2
  import psycopg2.extensions
  import unittest
  from .testutils import ConnectingTestCase, skip_before_postgres, skip_if_crdb
label_desc: Use image node_id 5 for calling the WithConnectionTestCase obj's underlying member method code with example usage: obj.test_with_closed() without return types