如何使用post、put、delete到firestore的多个端点对express http云函数进行单元测试？

npm install express jest supertest @google-cloud/firestore

// app.js
const express = require('express');
const Firestore = require('@google-cloud/firestore');

const app = express();
app.use(express.json());

const firestore = new Firestore();

app.post('/items', async (req, res) => {
  const { name } = req.body;
  const itemRef = firestore.collection('items').doc();
  await itemRef.set({ name });
  res.status(201).send({ id: itemRef.id, name });
});

app.put('/items/:id', async (req, res) => {
  const { id } = req.params;
  const { name } = req.body;
  const itemRef = firestore.collection('items').doc(id);
  await itemRef.update({ name });
  res.status(200).send({ id, name });
});

app.delete('/items/:id', async (req, res) => {
  const { id } = req.params;
  const itemRef = firestore.collection('items').doc(id);
  await itemRef.delete();
  res.status(204).send();
});

module.exports = app;

// app.test.js
const request = require('supertest');
const app = require('./app');

describe('Firestore Endpoints', () => {
  it('should create a new item', async () => {
    const res = await request(app)
      .post('/items')
      .send({ name: 'Test Item' })
      .expect(201);
    expect(res.body).toHaveProperty('id');
    expect(res.body.name).toBe('Test Item');
  });

  it('should update an existing item', async () => {
    const createRes = await request(app)
      .post('/items')
      .send({ name: 'Test Item' })
      .expect(201);
    const id = createRes.body.id;

    const updateRes = await request(app)
      .put(`/items/${id}`)
      .send({ name: 'Updated Item' })
      .expect(200);
    expect(updateRes.body.name).toBe('Updated Item');
  });

  it('should delete an existing item', async () => {
    const createRes = await request(app)
      .post('/items')
      .send({ name: 'Test Item' })
      .expect(201);
    const id = createRes.body.id;

    const deleteRes = await request(app)
      .delete(`/items/${id}`)
      .expect(204);
  });
});

npx jest

// 在测试环境中放宽Firestore安全规则
const firestore = new Firestore({
  projectId: 'your-project-id',
  keyFilename: 'path/to/service-account-file.json',
  // 其他配置
});

afterEach(async () => {
  const itemsRef = firestore.collection('items');
  await itemsRef.where('name', '==', 'Test Item').get().then((snapshot) => {
    snapshot.forEach(async (doc) => {
      await doc.ref.delete();
    });
  });
});