10. 测试独立的微服务
文章目录 10. 测试独立的微服务需要测试的范围需要测试的目标进行测试的架构重构项目的 index将会用到的一些依赖测试环境配置第一个测试 测试登录测试无效输入email 需要是唯一的在测试期间更改节点环境测试登录登出测试测试时遇到的 cookie 不好传递的问题认证测试的解决Auth Helper Function测试没认证的 需要测试的范围? back to top
需要测试的目标 请求的测试 数据库 model 的测试 事件收发的测试? back to top
进行测试的架构
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重构项目的 index // app.ts import express from "express"; import "express-async-errors"; import { json } from "body-parser"; import cookieSession from "cookie-session"; import { currentUserRouter } from "./routes/current-user"; import { signinRouter } from "./routes/signin"; import { signoutRouter } from "./routes/signout"; import { signupRouter } from "./routes/signup"; import { errorHandler } from "./middlewares/error-handler"; import { NotFoundError } from "./errors/not-found-error"; const app = express(); app.set("trust proxy", true); app.use(json()); app.use( cookieSession({ signed: false, secure: true, }) ); app.use(currentUserRouter); app.use(signinRouter); app.use(signoutRouter); app.use(signupRouter); app.all("*", async (req, res) => { throw new NotFoundError(); }); app.use(errorHandler); export { app }; // index.ts import mongoose from "mongoose"; import { app } from "./app"; const start = async () => { if (!process.env.JWT_KEY) { throw new Error("JWT_KEY must be defined"); } try { await mongoose.connect("mongodb://auth-mongo-srv:27017/auth", { useNewUrlParser: true, useUnifiedTopology: true, useCreateIndex: true, }); console.log("Connected to MongoDb"); } catch (err) { console.log(err); } app.listen(3000, () => { console.log("Listening on port 3000!"); }); }; start();? back to top
将会用到的一些依赖jest supertest mongodb-memory-server
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测试环境配置 // package.json "scripts": { "start": "ts-node-dev --poll src/index.ts", "test": "jest --watchAll --no-cache" // --watchAll 观察项目所有测试文件的变化 --no-cache 为了解决 jest 有时候识别不了 TypeScript 的文件变化的问题 }, "jest": { "preset": "ts-jest", "testEnvironment": "node", "setupFilesAfterEnv": [ "./src/test/setup.ts" ] }, // ./test/setup.ts import { MongoMemoryServer } from "mongodb-memory-server"; import mongoose from "mongoose"; import { app } from "../app"; let mongo: any; beforeAll(async () => { process.env.JWT_KEY = "asdfasdf"; mongo = new MongoMemoryServer(); const mongoUri = await mongo.getUri(); await mongoose.connect(mongoUri, { useNewUrlParser: true, useUnifiedTopology: true, }); }); beforeEach(async () => { // 在进行每一个单元测试之前，都要清空每一个 connection 的数据 const collections = await mongoose.connection.db.collections(); for (let collection of collections) { await collection.deleteMany({}); } }); afterAll(async () => { await mongo.stop(); await mongoose.connection.close(); });? back to top
第一个测试 测试登录 // signup.test.ts import request from "supertest"; import { app } from "../../app"; it("returns a 201 on successful signup", async () => { return request(app) .post("/api/users/signup") .send({ email: "test@test.com", password: "password", }) .expect(201); }); npm run test 这里报错是因为测试环境里没加 JWT之前我们是在 每个 pod 里kubectl create secret generic jwt-secret --from-literal=JWT_KEY=xxxxxx所以需要在 beforeAll 里加 JWT 假装有 JWT 即可process.env.JWT_KEY = "asdfasdf";? back to top
测试无效输入 // signup.test.ts import request from "supertest"; import { app } from "../../app"; it("returns a 400 with an invalid email", async () => { return request(app) .post("/api/users/signup") .send({ email: "alskdflaskjfd", password: "password", }) .expect(400); }); it("returns a 400 with an invalid password", async () => { return request(app) .post("/api/users/signup") .send({ email: "alskdflaskjfd", password: "p", }) .expect(400); }); it("returns a 400 with missing email and password", async () => { await request(app) .post("/api/users/signup") .send({ email: "test@test.com", }) .expect(400); await request(app) .post("/api/users/signup") .send({ password: "alskjdf", }) .expect(400); });? back to top
email 需要是唯一的 // signup.test.ts it("disallows duplicate emails", async () => { await request(app) .post("/api/users/signup") .send({ email: "test@test.com", password: "password", }) .expect(201); await request(app) .post("/api/users/signup") .send({ email: "test@test.com", password: "password", }) .expect(400); });? back to top
在测试期间更改节点环境 // signup.test.ts it("sets a cookie after successful signup", async () => { const response = await request(app) .post("/api/users/signup") .send({ email: "test@test.com", password: "password", }) .expect(201); // 测试 cookie 有没有 set 进去，有 cookie 就是 define 的 expect(response.get("Set-Cookie")).toBeDefined(); }); 为什么会出现这种情况？在我们 cookie 的配置中，secure 写的是 true，那么就会开启 httpssupertest 用的是 http 不是 https所以需要根据当前 process.env.NODE_ENV 来判断要不要开 http 和 https app.use( cookieSession({ signed: false, secure: process.env.NODE_ENV !== 'test' }) );? back to top
测试登录 // signin.test.ts import request from "supertest"; import { app } from "../../app"; it("fails when a email that does not exist is supplied", async () => { await request(app) .post("/api/users/signin") .send({ email: "test@test.com", password: "password", }) .expect(400); }); it("fails when an incorrect password is supplied", async () => { await request(app) .post("/api/users/signup") .send({ email: "test@test.com", password: "password", }) .expect(201); await request(app) .post("/api/users/signin") .send({ email: "test@test.com", password: "aslkdfjalskdfj", }) .expect(400); }); it("responds with a cookie when given valid credentials", async () => { await request(app) .post("/api/users/signup") .send({ email: "test@test.com", password: "password", }) .expect(201); const response = await request(app) .post("/api/users/signin") .send({ email: "test@test.com", password: "password", }) .expect(200); expect(response.get("Set-Cookie")).toBeDefined(); });? back to top
登出测试 我们在登出的时候，直接把 session 设为 null 了 router.post('/api/users/signout', (req, res) => { req.session = null; res.send({}); }); // signout.test.ts import request from "supertest"; import { app } from "../../app"; it("clears the cookie after signing out", async () => { await request(app) .post("/api/users/signup") .send({ email: "test@test.com", password: "password", }) .expect(201); const response = await request(app) .post("/api/users/signout") .send({}) .expect(200); expect(response.get("Set-Cookie")[0]).toEqual( "express:sess=; path=/; expires=Thu, 01 Jan 1970 00:00:00 GMT; httponly" ); }); 测试小技巧，打印正确的 response，然后测试 response 即可 ? back to top 测试时遇到的 cookie 不好传递的问题 很正常的一个 测试，我们希望登录然后查看 currentuser然后不出意外确实是可以看到 response body 中的 currentuser // current-user.test.ts import request from "supertest"; import { app } from "../../app"; it("responds with details about the current user", async () => { await request(app) .post("/api/users/signup") .send({ email: "test@test.com", password: "password", }) .expect(201); const response = await request(app) .get("/api/users/currentuser") .send() .expect(200); console.log(response.body); }); 但是打印出来的是 current null就说明获取不了 我们的登录状态? back to top
认证测试的解决 因为我们登录状态 session 会话（包含 JWT），是通过 cookie 在客户端里存的，还记得之前 express-session 和 cookie-session 的测试吗？所以要获取到存登录状态的 cookie，必须在登录的时候获取 response 的 cookie，缓存下来，在验证 currentuser 的时候加上 import request from "supertest"; import { app } from "../../app"; it("responds with details about the current user", async () => { const authResponse = await request(app) .post("/api/users/signup") .send({ email: "test@test.com", password: "password", }) .expect(201); const cookie = authResponse.get("Set-Cookie"); const response = await request(app) .get("/api/users/currentuser") .set("Cookie", cookie) .send() .expect(200); expect(response.body.currentUser.email).toEqual("test@test.com"); });? back to top
Auth Helper Function 因为我们之后都希望测试的时候，能拿到会话的cookie所以可以将这段代码抽出来复用 global.signin = async () => { const email = "test@test.com"; const password = "password"; const response = await request(app) .post("/api/users/signup") .send({ email, password, }) .expect(201); const cookie = response.get("Set-Cookie"); return cookie; };? back to top
测试没认证的 it("responds with null if not authenticated", async () => { const response = await request(app) .get("/api/users/currentuser") .send() .expect(200); expect(response.body.currentUser).toEqual(null); });? back to top
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标签： #React #微服务 #10 #测试独立的微服务文章目录10 #测试登录测试无效输入email
