Chai-http:无法设置节点值 ctx.state

Chai-http: cannot set value of nodes ctx.state

我正在使用 NodeJS 和 KOA 创建一个 API。为了进行测试,我使用了 chai (chai-http) 和 mocha。 当我在我的控制器中使用 const { username } = ctx.state.user 来获取发送请求的用户的用户名时,问题就出现了。当使用我的应用程序(使用 Flutter)或使用 Postman 访问它们时,它可以工作,但是当 运行 使用 mocha 进行测试时,我得到错误 TypeError: Cannot destructure property 'username' of 'undefined' or 'null'。在调试代码时,我发现 ctx 有一个 state 的键,但该键的值为空。我尝试了 .set(...).send(...) 方法,但它们只修改了 ctx.request.headerctx.request.body.

中的值

所以我的问题是:是否可以使用 chai 为 ctx.state 设置一个值,如果可以,如何设置?我想输入类似 {user: {username: 'chai'}}.

的内容

下面是2个主要部分,要测试的控制器部分和测试方法:

async function bar(ctx, next) {
    const { username } = ctx.state.user;
    const { value } = ctx.request.body;

    // do something with value and username

    ctx.status = 200;
}
it("With correct gameKey: should return the rating of the game", done => {
    chai
        .request('http://localhost:3000')
        .post('/foo/bar')
        .set('content-type', 'application/json')
        .send({value: 3});
        .end((err, res) => {
            // do some tests
            done();
        });
});

这是来自服务器索引和测试文件的完整代码:

const Koa = require('koa');
const Jwt = require('koa-jwt');
const Router = require('koa-router');
const Cors = require('@koa/cors');
const BodyParser = require('koa-bodyparser');
const Helmet = require('koa-helmet');

const app = new Koa();
const router = new Router();
router.post('/foo/bar', bar);

async function bar(ctx, next) {
    const { username } = ctx.state.user;
    const { value } = ctx.request.body;

    // do something with value and username

    ctx.status = 200;
}

app.use(Helmet());
app.use(Cors());
app.use(BodyParser({
    enableTypes: ['json'],
    strict: true,
    onerror(err, ctx) {
        ctx.throw('Request body could not be parsed', 422);
    },
}));
app.use(Jwt({ secret: process.env.SECRET }).unless({
    path: [
        // Whitelist routes that don't require authentication
        /^\/auth/,
    ],
}));

app.use(router.routes());
app.use(router.allowedMethods());

app.listen(3000, () => console.log(`API server started on localhost:3000`));
const chai = require("chai");
const chaiHttp = require("chai-http");
chai.use(chaiHttp);
const expect = require('chai').expect;

const userCredentials = {
  username: 'chai', 
  password: 'chai'
}

describe("Route: games/", () => {
    before(() => {
        chai
            .request('http://localhost:3000')
            .post('/auth')
            .set('content-type', 'application/json')
            .send(userCredentials)
            .end((err, res) => {
                expect(res.status).to.be.eql(200);
            });
    });

    describe("Sub-route: GET /", () => {
        describe("Sub-route: PUT /:gameKey/rating", () => {
            it("With correct gameKey: should return the rating of the game", done => {
                chai
                    .request('http://localhost:3000')
                    .post('/foo/bar')
                    .set('content-type', 'application/json')
                    .send({value: 3});
                    .end((err, res) => {
                        expect(res.status).to.be.eql(200);
                        done();
                    });
            });
        });
    });
});

根据 KOA 文档ctx.state推荐的命名空间,用于通过中间件和前端视图传递信息。

app.use(function * (next) {
  var ctx = this

  ctx.request
  ctx.response

  ctx.body = 'hello'

  ctx.state.user = yield User.find(id).fetch()
  next()
}

所以我认为你可以在中间件函数中设置 ctx.state,你可以在下一个请求处理程序中使用它。

感谢 的评论,我明白了。我不得不使用中间件,所以我在 before() 方法中保存了随请求检索到的令牌,并使用 .set("Authorization", "Bearer " + token).

将其添加到其他请求中

工作测试如下所示:

const chai = require("chai");
const chaiHttp = require("chai-http");
chai.use(chaiHttp);
const expect = require('chai').expect;

const userCredentials = {
  username: 'chai', 
  password: 'chai'
}

describe("Route: games/", () => {
    var token;
    before(() => {
        chai
            .request('http://localhost:3000')
            .post('/auth')
            .set('content-type', 'application/json')
            .send(userCredentials)
            .end((err, res) => {
                expect(res.status).to.be.eql(200);
                token = res.body.token;  // Added this
            });
    });

    describe("Sub-route: GET /", () => {
        describe("Sub-route: PUT /:gameKey/rating", () => {
            it("With correct gameKey: should return the rating of the game", done => {
                chai
                    .request('http://localhost:3000')
                    .post('/foo/bar')
                    .set("Authorization", "Bearer " + token)  // Added this
                    .set('content-type', 'application/json')
                    .send({value: 3});
                    .end((err, res) => {
                        expect(res.status).to.be.eql(200);
                        done();
                    });
            });
        });
    });
});