ลองติดตั้ง SonarQube Local เพื่อวัด Test Coverage โค้ดเรากัน!

simple-api/
├── app.js                         # โค้ด API หลัก
├── package.json                   # รายละเอียดโปรเจกต์และสคริปต์
├── sonar-project.properties       # คอนฟิกสำหรับ SonarQube
├── docker-compose.yml             # รัน SonarQube และ Sonar Scanner ด้วย Docker
├── coverage/                      # โฟลเดอร์ที่ Jest สร้างหลังรัน coverage
│   └── lcov.info                  # รายงาน test coverage สำหรับ SonarQube
└── __tests__/                     # โฟลเดอร์เก็บ unit test
    └── app.test.js                # ตัวอย่าง unit test สำหรับ API

{
  "name": "simple-api",
  "version": "1.0.0",
  "description": "Simple API for testing",
  "scripts": {
    "start": "node app.js",
    "test": "jest --coverage"
  },
  "dependencies": {
    "express": "5.1.0"
  },
  "devDependencies": {
    "jest": "30.0.2",
    "supertest": "7.1.1"
  }
}

const express = require('express');
const app = express();

// Mock users data
const users = [
  { id: 1, name: 'Teera' },
  { id: 2, name: 'Tee' }
];

// GET /users
app.get('/users', (req, res) => {
  res.json(users);
});

const PORT = process.env.PORT || 3000;
if (require.main === module) {
  app.listen(PORT, () => console.log(`Server running on port ${PORT}`));
}

module.exports = app;

const request = require('supertest');
const app = require('../app');

describe('GET /users', () => {
  it('should return list of users', async () => {
    const res = await request(app).get('/users');
    expect(res.statusCode).toBe(200);
    expect(res.body).toEqual([
      { id: 1, name: 'Teera' },
      { id: 2, name: 'Tee' }
    ]);
  });
});

npm test

> [email protected] test
> jest --coverage      

 PASS  __tests__/app.test.js
  GET /users
    √ should return list of users (132 ms)

----------|---------|----------|---------|---------|-------------------
File      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
----------|---------|----------|---------|---------|-------------------
All files |      80 |       75 |      50 |   88.88 |                   
 app.js   |      80 |       75 |      50 |   88.88 | 17                
----------|---------|----------|---------|---------|-------------------
Test Suites: 1 passed, 1 total
Tests:       1 passed, 1 total
Snapshots:   0 total
Time:        3.754 s
Ran all test suites.

services:
  sonarqube:
    image: sonarqube:community
    container_name: sonarqube
    ports:
      - "9000:9000"
    environment:
      - SONAR_ES_BOOTSTRAP_CHECKS_DISABLE=true
    volumes:
      - sonarqube_data:/opt/sonarqube/data

  sonar-scanner:
    image: sonarsource/sonar-scanner-cli
    container_name: sonar-scanner
    volumes:
      - .:/usr/src
    working_dir: /usr/src
    command: sonar-scanner

volumes:
  sonarqube_data:

docker compose up -d sonarqube

sonar.projectKey=simple-api
sonar.sources=.
sonar.host.url=http://sonarqube:9000
sonar.token=sqp_3c88208399bfcd77f8b21f50a0a70975aeb70214

sonar.tests=__tests__/
sonar.test.inclusions=**/*.test.js,**/*.spec.js
sonar.javascript.lcov.reportPaths=coverage/lcov.info
sonar.exclusions=coverage/**,node_modules/**

docker compose run --rm sonar-scanner