Basic unit tests

Author: clareliguori

buildspecs/build.yml

@@ -4,7 +4,9 @@ phases:
   install:
     commands:
       - npm install
-
+  build:
+    commands:
+      - npm test
 artifacts:
   files:
     - '**/*'

package.json

@@ -3,11 +3,17 @@
   "version": "1.0.0",
   "main": "service.js",
   "scripts": {
-    "start": "node service.js"
+    "start": "node service.js",
+    "test": "./node_modules/mocha/bin/mocha"
   },
   "dependencies": {
     "numeral": "^2.0.0",
     "express": "^4.13.3"
   },
+  "devDependencies": {
+    "mocha": "^4.0.0",
+    "chai": "^3.5.0",
+    "chai-http": "^3.0.0"
+  },
   "private": "true"
 }

service.js

@@ -53,5 +53,7 @@ app.get('/divide', function (req, res) {
   sendResult(value, res);
 })
 
-app.listen(PORT, HOST);
-console.log(`Running on http://${HOST}:${PORT}`);
+if (!module.parent) {
+  app.listen(PORT, HOST);
+}
+module.exports = app;

test/calculator_spec.js

@@ -0,0 +1,29 @@
+var assert = require('assert');
+
+var calc = require('../calculator.js');
+
+describe('Calculator Tests', function() {
+	describe('Addition Tests', function() {
+		it('returns 1 + 1 = 2', function(done) {
+			assert.equal(calc.add(1, 1), 2);
+			done();
+		});
+
+		it('returns 1 + -1 = 0', function(done) {
+			assert.equal(calc.add(1, -1), 0);
+			done();
+		});
+	});
+
+	describe('Multiplication Tests', function() {
+		it('returns 2 * 2 = 4', function(done) {
+			assert.equal(calc.multiply(2, 2), 4);
+			done();
+		});
+
+		it('returns 0 * 4 = 4', function(done) {
+			assert.equal(calc.multiply(2, 2), 4);
+			done();
+		});
+	});
+});

test/service_spec.js

@@ -0,0 +1,34 @@
+process.env.NODE_ENV = 'test';
+
+const chai = require('chai');
+const chaiHttp = require('chai-http');
+const should = chai.should();
+const expect = chai.expect;
+const app = require('../service');
+
+chai.use(chaiHttp);
+
+describe('Calculator service', () => {
+
+  var server;
+
+  it('it should add two numbers', (done) => {
+    server = app.listen();
+    chai.request(server)
+      .get('/add')
+      .query({a: 1, b: 2})
+      .end((err, res) => {
+        expect(err).to.be.null;
+        res.should.have.status(200);
+        res.should.have.header('content-type', 'text/plain; charset=utf-8');
+        res.text.should.equal('3');
+        done();
+      });
+  });
+
+  after(function(done) {
+    if (server) {
+      server.close(done);
+    }
+  });
+});