timer.test.ts

import { HttpApp } from '../http/app';
import { Route } from '../interfaces';
import { Timer } from './timer';

import { IncomingMessage } from 'http';
import { OutgoingMessage } from 'http';

const routes: Route[] = [
  {
    path: '',
    middlewares: [Timer],
    children: [
      {
        methods: ['GET'],
        path: '/foo/bar'
      }
    ]
  }
];

describe('Timer unit tests', () => {
  test('sets appropriate headers', (done) => {
    const app = new HttpApp(routes);
    const listener = app.listen();
    const now = Date.now();
    app['response$'].subscribe((response) => {
      expect(
        Number(response.headers['X-Request-Timein'])
      ).toBeGreaterThanOrEqual(now);
      expect(
        Number(response.headers['X-Request-Timeout'])
      ).toBeGreaterThanOrEqual(now);
      expect(
        Number(response.headers['X-Response-Time'])
      ).toBeGreaterThanOrEqual(0);
      expect(response.statusCode).toEqual(200);
      done();
    });
    listener(
      { method: 'GET', url: '/foo/bar' } as IncomingMessage,
      {} as OutgoingMessage
    );
  });
});