Adds tests for POST /todos

package.json

@@ -4,14 +4,19 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "mocha server/**/*.test.js",
+    "test-watch": "nodemon --exec 'npm test'"
   },
   "author": "",
   "license": "ISC",
   "dependencies": {
     "body-parser": "^1.18.3",
+    "expect": "^23.6.0",
     "express": "^4.16.3",
+    "mocha": "^5.2.0",
     "mongodb": "^3.1.6",
-    "mongoose": "^5.2.17"
+    "mongoose": "^5.2.17",
+    "nodemon": "^1.18.4",
+    "supertest": "^3.3.0"
   }
 }

server/server.js

@@ -23,4 +23,6 @@ app.post('/todos', (req, res) => {
 
 app.listen(3000, () => {
   console.log('Started on port: 3000');
-});
+});
+
+module.exports = { app };

server/tests/server.test.js

@@ -0,0 +1,34 @@
+const expect = require('expect');
+const request = require('supertest');
+
+const { app } = require('./../server');
+const { Todo } = require('./../models/todo');
+
+beforeEach((done) => {
+  Todo.deleteMany().then(() => done());
+});
+
+describe('POST /todos', () => {
+  it('should create a new todo', (done) => {
+    let text = "Test to todo text";
+
+    request(app)
+      .post('/todos')
+      .send({text})
+      .expect(200)
+      .expect((res) => {
+        expect(res.body.text).toBe(text);
+      })
+      .end((err, res) => {
+        if (err) {
+          return done(err);
+        }
+
+        Todo.find().then((todos) => {
+          expect(todos.length).toBe(1);
+          expect(todos[0].text).toBe(text);
+          done();
+        }).catch((e) => done(e)); 
+      });
+  });
+});