我想测试数据库连接,但不获取数据。为此,我编写了这个测试文件。
import { PGConnection } from "../../../db";
test('two plus two is four', () => {
expect(2 + 2).toBe(4);
});
test("Test connection to DDBB", () => {
const db = new PGConnection();
let result = db.test();
expect(result).toBe("Connection to database has been established succesfully");
});
我有一个类,在这个类中我创建了与数据库的连接:
import Sequelize from "sequelize";
//It's mandatory to import dotenv in each file where we can use enviroment variables
import config from "dotenv";
config.config();
//console.log("Usuario DDBB: " + loader.FEB_CONNECTION_USER);
class PGConnection{
constructor(){
this.db = this.setConnection();
}
setConnection(){
/*console.log("host: " + process.env.FEB_CONNECTION_HOST + "\n" +
"port: " + process.env.FEB_CONNECTION_PORT + "\n" +
"user: " + process.env.FEB_CONNECTION_USER + "\n" +
"password: " + process.env.FEB_CONNECTION_PASSWORD + "\n" +
"database: " + process.env.FEB_CONNECTION_DDBBNAME); */
return(
new Sequelize(
process.env.DDBB_NAME,
process.env.DDBB_USER,
process.env.DDBB_PSWD, {
host: process.env.DDBB_HOST,
port: process.env.DDBB_PORT,
define: {
freezeTableName: true, /**Don't add 's to the end of each table/model */
timestamps: false, /**Don't add fields createdAt and updatedAt */
/* charset: 'utf8',
dialectOptions: {
collate: 'utf8_general_ci'
}, */
},
dialect: "postgres",
//Remove operatorAliases due to an error when we update to sequelize 6.0.0
//operatorsAliases: false,
pool: {
max: 5,
min: 0,
acquire: 30000,
idle: 10000
}
}
)
);
}
async test(){
try{
console.log("host: " + process.env.FEB_CONNECTION_HOST +
"port: " + process.env.FEB_CONNECTION_PORT +
"user: " + process.env.FEB_CONNECTION_USER +
"password: " + process.env.FEB_CONNECTION_PASSWORD +
"database: " + process.env.FEB_CONNECTION_DDBBNAME)
await this.db.authenticate();
console.log("Connection to database has been established succesfully");
return ("Connection to database has been established succesfully");
//this.closeConnection();
}catch (err){
console.error("Unable to connect to database: " + err);
return("Unable to connect to database: " + err);
}
}
closeConnection(){
this.db.close();
console.log("Connection to database has been closed!!!")
}
}
module.exports.PGConnection = PGConnection;
这个类运行正常。但是,当我尝试进行测试时,我遇到了这个错误:
FAIL src/server/tests/test.spec.js
● Test suite failed to run
ReferenceError: regeneratorRuntime is not defined
65 |
66 | closeConnection(){
> 67 | this.db.close();
| ^
68 | console.log("Connection to database has been closed!!!")
69 | }
70 | }
我的 package.json 文件如下:
{
"name": "",
"version": "1.0.0",
"description": "Code to build an API for projects, users and tasks",
"main": "",
"scripts": {
"dev": "babel-node src/server/server.js",
"test": "jest ./server/tests"
},
"author": "",
"license": "ISC",
"dependencies": {
"cors": "^2.8.5",
"dotenv": "^8.2.0",
"express": "^4.17.1",
"helmet": "^3.22.0",
"morgan": "^1.10.0",
"pg": "^8.2.1",
"pg-hstore": "^2.3.3",
"sequelize": "^5.21.11"
},
"devDependencies": {
"@babel/cli": "^7.10.1",
"@babel/core": "^7.10.2",
"@babel/node": "^7.10.1",
"@babel/polyfill": "^7.10.1",
"@babel/preset-env": "^7.10.2",
"babel-loader": "^8.1.0",
"jest": "^26.0.1",
"webpack": "^4.43.0"
}
}
我做错了什么?