我正在用NodeJS和KOA创建一个API。在测试中,我使用chai (Chai)和mocha。当我在控制器中使用const { username } = ctx.state.user获取发送请求的用户的用户名时,就会出现问题。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,但是在使用mocha运行测试时,我会得到错误的TypeError: Cannot destructure property 'username' of 'undefined' or 'null'。在调试代码时,我发现ctx有一个用于state的键,但该键的值为空。我尝试了.set(...)和.send(...)方法,但它们只修改了ctx.request.header和ctx.request.body中的值。
因此,我的问题是:是否有可能用chai为ctx.state设置一个值,如果可能,如何设置?我想放一些类似{user: {username: 'chai'}}的东西。
以下是两个主要部分,需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();
});
});下面是服务器索引和测试文件的全部代码:
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();
});
});
});
});
});发布于 2019-12-12 12:43:19
多亏了Sandeep Patel的评论,我才明白了这一点。我必须使用中间件,所以我在before()方法中保存了与请求一起撤回的令牌,并使用.set("Authorization", "Bearer " + token)将其添加到其他请求中。
然后,工作测试看起来如下:
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();
});
});
});
});
});发布于 2019-12-12 10:40:28
根据KOA文档,ctx.state是通过中间件和您的前端视图传递信息的推荐名称空间。
app.use(function * (next) {
var ctx = this
ctx.request
ctx.response
ctx.body = 'hello'
ctx.state.user = yield User.find(id).fetch()
next()
}因此,我认为您可以在中间件函数中设置ctx.state,您可以在下一个请求处理程序中使用它。
https://stackoverflow.com/questions/59302421
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