feat: add CI/CD pipeline with OIDC, ECR, Docker Hub, lint and tests

app/backend/eslint.config.js

@@ -0,0 +1,36 @@
+const js = require("@eslint/js");
+
+module.exports = [
+  js.configs.recommended,
+  {
+    languageOptions: {
+      ecmaVersion: 2021,
+      globals: {
+        require: "readonly",
+        module: "readonly",
+        exports: "readonly",
+        process: "readonly",
+        __dirname: "readonly",
+        console: "readonly",
+      },
+    },
+    rules: {
+      "no-unused-vars": ["warn", { "argsIgnorePattern": "^_" }],
+      "no-console": "off",
+    },
+  },
+  {
+    files: ["**/*.test.js"],
+    languageOptions: {
+      globals: {
+        describe: "readonly",
+        it: "readonly",
+        expect: "readonly",
+        beforeEach: "readonly",
+        afterEach: "readonly",
+        beforeAll: "readonly",
+        afterAll: "readonly",
+      },
+    },
+  },
+];

app/backend/package.json

@@ -5,10 +5,18 @@
   "main": "server.js",
   "scripts": {
     "start": "node server.js",
-    "dev": "node --watch server.js"
+    "dev": "node --watch server.js",
+    "test": "jest --forceExit",
+    "lint": "eslint . --ext .js --max-warnings=0"
   },
   "dependencies": {
     "dotenv": "^17.4.0",
     "express": "^4.21.2"
+  },
+  "devDependencies": {
+    "@eslint/js": "^10.0.1",
+    "eslint": "^10.2.1",
+    "jest": "^30.3.0",
+    "supertest": "^7.2.2"
   }
-}
+}

app/backend/server.js

@@ -11,19 +11,23 @@ let tasks = [];
 let nextId = 1;
 
 // Routes
-app.get("/", (req, res) => {
+app.get("/api", (req, res) => {
   res.json({ message: "Task API is running", version: "1.0.0" });
 });
 
-app.get("/health", (req, res) => {
-  res.status(200).json({ status: "healthy", uptime: process.uptime() });
+app.get("/api/health", (req, res) => {
+  res.status(200).json({
+    status: "ok",
+    uptime: process.uptime(),
+    timestamp: new Date().toISOString(),
+  });
 });
 
-app.get("/tasks", (req, res) => {
+app.get("/api/tasks", (req, res) => {
   res.json(tasks);
 });
 
-app.post("/tasks", (req, res) => {
+app.post("/api/tasks", (req, res) => {
   const { title } = req.body;
   if (!title) {
     return res.status(400).json({ error: "Title is required" });
@@ -33,14 +37,14 @@ app.post("/tasks", (req, res) => {
   res.status(201).json(task);
 });
 
-app.patch("/tasks/:id", (req, res) => {
+app.patch("/api/tasks/:id", (req, res) => {
   const task = tasks.find((t) => t.id === parseInt(req.params.id));
   if (!task) return res.status(404).json({ error: "Task not found" });
   task.completed = !task.completed;
   res.json(task);
 });
 
-app.delete("/tasks/:id", (req, res) => {
+app.delete("/api/tasks/:id", (req, res) => {
   const index = tasks.findIndex((t) => t.id === parseInt(req.params.id));
   if (index === -1) return res.status(404).json({ error: "Task not found" });
   tasks.splice(index, 1);
@@ -53,11 +57,15 @@ app.use((req, res) => {
 });
 
 // Global error handler
-app.use((err, req, res, next) => {
+app.use((err, req, res, _next) => {
   console.error(err.stack);
   res.status(500).json({ error: "Internal server error" });
 });
 
-app.listen(PORT, () => {
-  console.log(`Server running on port ${PORT}`);
-});
+if (require.main === module) {
+  app.listen(PORT, () => {
+    console.log(`Server running on port ${PORT}`);
+  });
+}
+
+module.exports = app;

app/backend/server.test.js

@@ -0,0 +1,34 @@
+const request = require('supertest');
+const app = require('./server');
+
+describe('Health Check', () => {
+  it('GET /api/health returns 200 with status ok', async () => {
+    const res = await request(app).get('/api/health');
+    expect(res.statusCode).toBe(200);
+    expect(res.body.status).toBe('ok');
+  });
+});
+
+describe('Tasks API', () => {
+  it('GET /api/tasks returns empty array initially', async () => {
+    const res = await request(app).get('/api/tasks');
+    expect(res.statusCode).toBe(200);
+    expect(Array.isArray(res.body)).toBe(true);
+  });
+
+  it('POST /api/tasks creates a new task', async () => {
+    const res = await request(app)
+      .post('/api/tasks')
+      .send({ title: 'Test task' });
+    expect(res.statusCode).toBe(201);
+    expect(res.body.title).toBe('Test task');
+    expect(res.body.completed).toBe(false);
+  });
+
+  it('POST /api/tasks returns 400 when title is missing', async () => {
+    const res = await request(app)
+      .post('/api/tasks')
+      .send({});
+    expect(res.statusCode).toBe(400);
+  });
+});