├── .gitignore
├── Dockerfile
├── app.js
├── package.json
└── spec
    └── helloWorld-spec.js


/.gitignore:
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1 | node_modules/*
2 | package-lock.json
3 | 


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/Dockerfile:
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 1 | FROM node:alpine
 2 | 
 3 | EXPOSE 3000
 4 | 
 5 | WORKDIR /app
 6 | 
 7 | COPY . /app
 8 | 
 9 | CMD ["node", "app.js"]
10 | 


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/app.js:
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 1 | const express = require('express')
 2 | const app = express()
 3 | 
 4 | app.get('/', (req, res) => res.send('Hello World!'))
 5 | 
 6 | var server = app.listen(3000, () => {
 7 |     console.log("Listening on port " + server.address().port + "...");
 8 | });
 9 | 
10 | module.exports = server;
11 | 


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/package.json:
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 1 | {
 2 |   "name": "playground",
 3 |   "version": "1.0.0",
 4 |   "description": "",
 5 |   "main": "app.js",
 6 |   "scripts": {
 7 |     "test": "jasmine-node spec"
 8 |   },
 9 |   "author": "",
10 |   "license": "ISC",
11 |   "dependencies": {
12 |     "express": "^4.16.3",
13 |     "request": "^2.85.0"
14 |   },
15 |   "devDependencies": {
16 |     "jasmine-node": "^1.14.5"
17 |   }
18 | }
19 | 


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/spec/helloWorld-spec.js:
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 1 | var request = require("request");
 2 | var base_url = "http://localhost:3000/";
 3 | var server = require("../app.js");
 4 | 
 5 | describe("Hello World Server", function() {
 6 |   describe("GET /", function() {
 7 |     it("returns status code 200", function(done) {
 8 |       request.get(base_url, function(error, response, body) {
 9 |         expect(response.statusCode).toBe(200);
10 |         done();
11 |       });
12 |     });
13 | 
14 |     it("returns Hello World", function(done) {
15 |       request.get(base_url, function(error, response, body) {
16 |         expect(body).toBe("Hello World!");
17 |         done();
18 | 
19 |         server.close();
20 |       });
21 |     });
22 |   });
23 | });
24 | 


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