第十七章：测试 —— 真机场开航前要演练，Nest 也一样

import { Test } from '@nestjs/testing';
import { FlightsService } from './flights.service';

describe('FlightsService', () => {
  let service: FlightsService;

  beforeEach(async () => {
    const moduleRef = await Test.createTestingModule({
      providers: [FlightsService],
    }).compile();

    service = moduleRef.get(FlightsService);
  });

  it('should be defined', () => {
    expect(service).toBeDefined();
  });
});

import { Test } from '@nestjs/testing';
import { INestApplication, ValidationPipe } from '@nestjs/common';
import * as request from 'supertest';
import { AppModule } from '../src/app.module';

describe('Flights E2E', () => {
  let app: INestApplication;

  beforeAll(async () => {
    const moduleRef = await Test.createTestingModule({
      imports: [AppModule],
    }).compile();

    app = moduleRef.createNestApplication();
    app.useGlobalPipes(new ValidationPipe({ whitelist: true, transform: true }));
    await app.init();
  });

  it('POST /flights should validate body', async () => {
    await request(app.getHttpServer())
      .post('/flights')
      .send({ code: '' })
      .expect(400);
  });

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

单测 = 单个调度岗位演练
e2e = 乘客从进门到登机整链路演练