code: def test_empty(self):
      cur = self.conn.cursor()
      psycopg2.extras.execute_values(
          cur, "insert into testfast (id, val) values %s", []
      )
      cur.execute("select * from testfast order by id")
      self.assertEqual(cur.fetchall(), [])
  
imports: from datetime import date
  from .None import testutils
  import unittest
  import psycopg2
  import psycopg2.extras
  import psycopg2.extensions
  from psycopg2 import sql
label_desc: Use image node_id 1 for calling the TestExecuteValues obj's underlying member method code with example usage: obj.test_empty() without return types