Support end to end testing

[vunb]

When the application grows, it is hard to manually test a behavior of each API endpoint. The end-to-end tests help us to make sure that everything is working correctly and fits project requirements.

TODO:

• Add new module @kites/testing to support end to end testing
• Help to init or close application properly
• Support override kites providers and extensions usage

Example:

import { KitesInstance } from '@kites/core';
import { Test } from '@kites/testing';

import * as request from 'supertest';
import { TodoController } from './todo.controller';
import { TodoService } from './todo.service';

describe('Todo e2e', () => {
  let app: KitesInstance;
  let todoService = { findAll: () => ['list all tasks'] };

  beforeAll(async () => {
    app = await Test.createApp({
      providers: [TodoService],
    }).init();
  });

  it(`/GET list`, () => {
    return request(app.express.app)
      .get('/api/todo')
      .expect(200)
      .expect({
        data: todoService.findAll(),
      });
  });

  afterAll(async () => {
    await app.close();
  });
});