code: def test_insert_rows_replace(self):
      table = "table"
      rows = [
          (
              1,
              "hello",
          ),
          (
              2,
              "world",
          ),
      ]
      fields = ("id", "value")
  
      self.db_hook.insert_rows(
          table, rows, fields, replace=True, replace_index=fields[0]
      )
  
      assert self.conn.close.call_count == 1
      assert self.cur.close.call_count == 1
  
      commit_count = 2  # The first and last commit
      assert commit_count == self.conn.commit.call_count
  
      sql = (
          f"INSERT INTO {table} ({fields[0]}, {fields[1]}) VALUES (%s,%s) "
          f"ON CONFLICT ({fields[0]}) DO UPDATE SET {fields[1]} = excluded.{fields[1]}"
      )
      for row in rows:
          self.cur.execute.assert_any_call(sql, row)
  
imports: from __future__ import annotations
  import json
  import os
  from unittest import mock
  import psycopg2.extras
  import pytest
  from airflow.models import Connection
  from airflow.providers.postgres.hooks.postgres import PostgresHook
  from airflow.utils.types import NOTSET
label_desc: Use image node_id 7 for calling the TestPostgresHook obj's underlying member method code with example usage: obj.test_insert_rows_replace() without return types