如何测试route.js？

import { describe, expect, it, vi } from 'vitest'
import { POST } from './route'

describe('[POST] /api/test', () => {

  it('should respond with a `400` status code and error message', async () => {
    const request = new Request('http://localhost:3000/api/test', {
      method: 'POST'
    })
    const res = await POST(request)
    const body = await res.json()
    expect(res.status).toBe(400)
  })

})

字符串
它在.json()上失败，因为它在Request对象上不存在

export const POST = async (request: Request) => {
  const data = await request.json()
  ...
}

型
我使用vitest与jsdom环境。