nest/integration/hello-world/e2e/middleware-class.spec.ts

import {
  Controller,
  Get,
  INestApplication,
  Injectable,
  MiddlewareConsumer,
  Module,
} from '@nestjs/common';
import { Test } from '@nestjs/testing';
import * as request from 'supertest';
import { ApplicationModule } from '../src/app.module';

const RETURN_VALUE = 'test';

@Injectable()
class Middleware {
  use(req, res, next) {
    res.send(RETURN_VALUE);
  }
}

@Controller()
class TestController {
  @Get('test')
  test() {
    return 'test';
  }
}

@Module({
  imports: [ApplicationModule],
  controllers: [TestController],
})
class TestModule {
  configure(consumer: MiddlewareConsumer) {
    consumer.apply(Middleware).forRoutes('*');
  }
}

describe('Middleware (class)', () => {
  let app: INestApplication;

  beforeEach(async () => {
    app = (
      await Test.createTestingModule({
        imports: [TestModule],
      }).compile()
    ).createNestApplication();

    await app.init();
  });

  it(`forRoutes(*)`, () => {
    return request(app.getHttpServer()).get('/hello').expect(200, RETURN_VALUE);
  });

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