与 MongoDB 一起使用
借助 全局设置/拆卸 和 异步测试环境 API,Jest 可以与 MongoDB 顺利工作。
¥With the Global Setup/Teardown and Async Test Environment APIs, Jest can work smoothly with MongoDB.
使用 jest-mongodb 预设
¥Use jest-mongodb Preset
Jest MongoDB 提供了使用 MongoDB 运行测试所需的所有配置。
¥Jest MongoDB provides all required configuration to run your tests using MongoDB.
-
首先安装
@shelf/jest-mongodb
¥First install
@shelf/jest-mongodb
- npm
- Yarn
- pnpm
npm install --save-dev @shelf/jest-mongodb
yarn add --dev @shelf/jest-mongodb
pnpm add --save-dev @shelf/jest-mongodb
-
在 Jest 配置中指定预设:
¥Specify preset in your Jest configuration:
{
"preset": "@shelf/jest-mongodb"
}
-
写下你的测试
¥Write your test
const {MongoClient} = require('mongodb');
describe('insert', () => {
let connection;
let db;
beforeAll(async () => {
connection = await MongoClient.connect(globalThis.__MONGO_URI__, {
useNewUrlParser: true,
useUnifiedTopology: true,
});
db = await connection.db(globalThis.__MONGO_DB_NAME__);
});
afterAll(async () => {
await connection.close();
});
it('should insert a doc into collection', async () => {
const users = db.collection('users');
const mockUser = {_id: 'some-user-id', name: 'John'};
await users.insertOne(mockUser);
const insertedUser = await users.findOne({_id: 'some-user-id'});
expect(insertedUser).toEqual(mockUser);
});
});
无需加载任何依赖。
¥There's no need to load any dependencies.
详细信息请参见 文档(配置 MongoDB 版本等)。
¥See documentation for details (configuring MongoDB version, etc).