refactor app.js

test not found routes

.env.example

@@ -1,3 +1,12 @@
-PORT=4000
+DEV_APP_PORT =
 
-MONGODB_URI="mongodb://localhost/todolist"
+DEV_DB_HOST =
+DEV_DB_PORT =
+DEV_DB_NAME =
+
+
+TEST_APP_PORT =
+
+TEST_DB_HOST =
+TEST_DB_PORT =
+TEST_DB_NAME =

.eslintrc.json

@@ -1,5 +1,6 @@
 {
-  "extends": ["airbnb-base"],
+  "extends": ["airbnb-base", "plugin:jest/recommended"],
+  "plugins": ["jest"],
   "rules": {
     "linebreak-style": "off",
     "no-unused-expressions": [

app.js

@@ -1,30 +1,14 @@
-const express = require('express');
-const bodyParser = require('body-parser');
-const mongoose = require('mongoose');
-const methodOverride = require('method-override');
-const morgan = require('morgan');
-
 require('dotenv').config();
 
-const app = express();
-
-app.use(bodyParser.urlencoded({ extended: false }));
-app.use(bodyParser.json());
-
-app.use(morgan('tiny'));
-
-app.use(methodOverride('_method'));
-
-mongoose.connect(process.env.MONGODB_URI);
+const config = require('./config');
+require('./config/db');
+const app = require('./config/app');
 
 require('./models/Todo');
 require('./models/TodoList');
 
-const todos = require('./routes/todos');
-const lists = require('./routes/lists');
-
-app.use('/todos', todos);
-app.use('/lists', lists);
+app.use('/todos', require('./routes/todos'));
+app.use('/lists', require('./routes/lists'));
 
 // 404 route
 app.use((req, res) => {
@@ -36,7 +20,7 @@ app.use((req, res) => {
   }
 
   if (req.accepts('json')) {
-    req.send({ error: 'Not found' });
+    res.send({ error: 'Not found' });
     return;
   }
 
@@ -61,6 +45,8 @@ app.use((error, req, res, next) => {
   next(error);
 });
 
-app.listen(process.env.PORT, () => {
+const server = app.listen(config.app.port, () => {
   console.log('Started!');
 });
+
+module.exports = server;

config/app.js

@@ -0,0 +1,15 @@
+const express = require('express');
+const bodyParser = require('body-parser');
+const methodOverride = require('method-override');
+const morgan = require('morgan');
+
+const app = express();
+
+app.use(bodyParser.urlencoded({ extended: false }));
+app.use(bodyParser.json());
+
+app.use(morgan('tiny'));
+
+app.use(methodOverride('_method'));
+
+module.exports = app;

config/db.js

@@ -0,0 +1,7 @@
+const mongoose = require('mongoose');
+const config = require('./');
+
+const { host, port, name } = config.db;
+const connectionString = `mongodb://${host}:${port}/${name}`;
+
+mongoose.connect(connectionString);

config/index.js

@@ -0,0 +1,29 @@
+const env = process.env.NODE_ENV;
+
+const dev = {
+  app: {
+    port: process.env.DEV_APP_PORT || 4000,
+  },
+  db: {
+    host: process.env.DEV_DB_HOST || 'localhost',
+    port: process.env.DEV_DB_PORT || 27017,
+    name: process.env.DEV_DB_NAME || 'todolist',
+  },
+};
+const test = {
+  app: {
+    port: process.env.TEST_APP_PORT || 4001,
+  },
+  db: {
+    host: process.env.TEST_DB_HOST || 'localhost',
+    port: process.env.TEST_DB_PORT || 27017,
+    name: process.env.TEST_DB_NAME || 'todolistTest',
+  },
+};
+
+const config = {
+  dev,
+  test,
+};
+
+module.exports = config[env] || config.dev;

package.json

@@ -7,7 +7,7 @@
   "scripts": {
     "start": "node ./app.js",
     "debug": "npx nodemon --inspect ./app.js",
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "jest"
   },
   "author": "",
   "dependencies": {
@@ -25,7 +25,13 @@
     "eslint": "^4.19.1",
     "eslint-config-airbnb-base": "^12.1.0",
     "eslint-config-node": "^2.0.0",
-    "eslint-plugin-import": "^2.11.0",
-    "nodemon": "^1.17.4"
+    "eslint-plugin-import": "^2.12.0",
+    "eslint-plugin-jest": "^21.15.1",
+    "jest": "^22.4.4",
+    "nodemon": "^1.17.4",
+    "supertest": "^3.1.0"
+  },
+  "jest": {
+    "testEnvironment": "node"
   }
 }

tests/integration/root.test.js

@@ -0,0 +1,37 @@
+const server = require('../../app.js');
+
+const request = require('supertest');
+const mongoose = require('mongoose');
+
+afterAll(async () => {
+  await mongoose.connection.dropDatabase();
+  await mongoose.disconnect();
+  await server.close();
+});
+
+describe('Test not found', () => {
+  test('respond not found with json', async () => {
+    const response = await request(server)
+      .get('/')
+      .set('Accept', 'application/json')
+      .expect(404)
+      .expect('Content-Type', 'application/json; charset=utf-8');
+    expect(response.body).toEqual({ error: 'Not found' });
+  });
+  test('respond not found with html', async () => {
+    const response = await request(server)
+      .get('/')
+      .set('Accept', 'text/html')
+      .expect(404)
+      .expect('Content-Type', 'text/html; charset=utf-8');
+    expect(response.text).toEqual('404');
+  });
+  test('respond not found with plain text', async () => {
+    const response = await request(server)
+      .get('/')
+      .set('Accept', 'text/plain')
+      .expect(404)
+      .expect('Content-Type', 'text/plain; charset=utf-8');
+    expect(response.text).toEqual('not found');
+  });
+});