Started by adding some system tests for the api.

seasoned_api/test/system/asADeveloperIWantToLogin.js

@@ -0,0 +1,25 @@
+const assert = require('assert');
+const request = require('supertest-as-promised');
+const app = require('src/webserver/app');
+const createUser = require('test/helpers/createUser');
+const resetDatabase = require('test/helpers/resetDatabase');
+
+describe('As a user I want to log in', () => {
+  before(() => resetDatabase());
+  before(() => createUser('test_user', 'test@gmail.com', 'password'));
+
+  it('should return 200 with a token if correct credentials are given', () =>
+    request(app)
+    .post('/api/v1/user/login')
+    .send({ username: 'test_user', password: 'password' })
+    .expect(200)
+    .then(response => assert.equal(typeof response.body.token, 'string'))
+  );
+
+  it('should return 401 if incorrect credentials are given', () =>
+    request(app)
+    .post('/api/v1/user/login')
+    .send({ username: 'test_user', password: 'anti-password' })
+    .expect(401)
+  );
+});