运行单元测试时出错。我正在使用NodeJS的快速应用程序。我想测试返回消息(200)和(最终)功能的输出。
const {Router} = require('express');
const {query} = require('../dbConfig');
module.exports = (router = new Router()) => {
//get only one user from the id
router.post('/getUser', async (req,res)=>{
id = req.body.id;
sql = "SELECT lastname, firstname, email, title_id, id, state FROM users WHERE id=" + id;
let result = await query(sql);
if(result.length >= 1){
res.send(result[0]);
}
})
return router;
};
但是当我尝试运行以下测试时:
const app = require('../../app')
const request = require('supertest')
jest.mock('../../dbConfig');;
describe('POST /getUser', () => {
let data = {
id:1
}
it('Response 200 + response type',(done)=>{
request.agent(app)
.post('/getUser')
.send(data)
.expect(200, done)
})
});
它向我返回以下错误
Timeout - Async callback was not invoked within the 5000ms timeout specified by jest.setTimeout.
我尝试了不同的变体而没有成功...我也尝试了在线文档,但这对于解决此错误并没有真正的帮助...我用npx jest
开玩笑,并且模拟文件看起来像这样:
const rep={
"lastname": "admin",
"firstname": "admin",
"email": "admin@etsmtl.ca",
"title_id": 1,
"id": 1,
"state": 1
};
const query = (sqli) =>{
return new Promise((resolve, reject) =>{
console.log("SQL request : " + sqli)
if(sqli === "SELECT lastname, firstname, email, title_id, id, state FROM users WHERE id=1"){
console.log("Passed")
resolve(rep);
}
});
}
module.exports = {query};
答案 0 :(得分:1)
您的query
方法返回一个对象(rep
),然后在POST
处理程序中检查其长度。对象的长度为undefined
,因此不会达到res.send
。您需要为另一个else
设置一个res.send
选项,这样无论发生什么情况,它都会回答客户端。另外,您可能想在if
处理程序中更改该POST
,或在模拟文件中更改返回格式。
例如,在您的Mock文件中:
const query = (sqli) =>{
return new Promise((resolve, reject) =>{
console.log("SQL request : " + sqli)
if(sqli === "SELECT lastname, firstname, email, title_id, id, state FROM users WHERE id=1"){
console.log("Passed")
resolve([rep]); //Now it's an array of length 1, reaches the first send
} else {
reject([]); //Length is 0, so it will reach the second send
}
});
}
控制器
if(result.length >= 1){
res.send(result[0]);
} else {
res.status(500).send('Something broke!');
}
答案 1 :(得分:0)
您确定数据库已初始化吗?您可以在控制器上尝试一下吗?
router.post('/getUser', async (req,res)=>{
id = req.body.id;
sql = "SELECT lastname, firstname, email, title_id, id, state FROM users WHERE id=" + id;
try {
let result = await query(sql);
if(result.length >= 1){
res.send(result[0]);
} else {
res.sendStatus(404);
}
} catch(err) {
res.sendStatus(500)
}
})
如果您的数据库未正确初始化,或者查询抛出错误,它将永远不会响应