Jest.js Nest.js无法创建包含多个服务的TestingModule

kqhtkvqz  于 2023-11-15  发布在  Jest
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我试图构建weatherService测试模块,但发生了错误。WeatherRepo是一个访问数据库并注入weatherService的提供程序。HttpModule也有类似的问题。我没有将HttpModule传递到导入中,而是将HttpService传递到提供中。如果我使用自动模拟或重写,这可以工作,但不像我预期的那样。

这里有一个错误

Error: Nest can't resolve dependencies of the WeatherRepo (?). Please make sure that the argument WeatherRepository at index [0] is available in the RootTestModule context.

Potential solutions:
- Is RootTestModule a valid NestJS module?
- If WeatherRepository is a provider, is it part of the current RootTestModule?
- If WeatherRepository is exported from a separate @Module, is that module imported within RootTestModule?
  @Module({
    imports: [ /* the Module containing WeatherRepository */ ]
  })

字符串

weather.module.ts

@Module({
  imports: [HttpModule, SequelizeModule.forFeature([Weather])],
  controllers: [WeatherController],
  providers: [WeatherService, WeatherRepo],
  exports: [WeatherService],
})
export class WeatherModule {}

天气.服务.规格.ts

describe('WeatherService', () => {
  beforeEach(async () => {
    const weatherServiceModule: TestingModule = await Test.createTestingModule({
      providers: [WeatherService, ConfigService, WeatherRepo],
      imports: [HttpModule],
    })
      // .overrideProvider(WeatherRepo)
      // .useValue(mockWeatherRepo)
      .compile();

    weatherService = weatherServiceModule.get<WeatherService>(WeatherService);
    weatherRepo = weatherServiceModule.get<WeatherRepo>(WeatherRepo);
    httpService = weatherServiceModule.get<HttpService>(HttpService);
  });

  it('should be defined', async () => {
    jest
      .spyOn(weatherRepo, 'findOrCreate')
      .mockResolvedValue(CreatedWeather(false));
    jest.spyOn(weatherRepo, 'update').mockResolvedValue(2);
    jest.spyOn(httpService, 'get').mockResolvedValue({ data: CreateWeather() });
  });

weather.service.ts

@Injectable()
export class WeatherService {
  constructor(
    private readonly httpService: HttpService,
    private readonly config: ConfigService,
    private readonly weatherRepository: WeatherRepo,
  ) {}
}

weather.repo.ts

@Injectable()
export class WeatherRepo {
  constructor(@InjectModel(Weather) private weatherModel: typeof Weather) {}
}


我想提供所有必需的provides/imports/controllers并获得结果(准备工作TestingModule)。既不覆盖也不自动模拟,因为我想用spyOn控制服务的行为。我不知道如何解决这个问题。有人能帮忙吗?

hl0ma9xz

hl0ma9xz1#

您需要为WeatherRepository提供程序(即通过@InjectModel(Weather)注入的提供程序)提供一个mock,或者需要使用SequelizeModule.forRoot()连接到数据库,然后像在WeatherModule中使用SequelizeModule.forFeature([Weather])一样提供实际的提供程序

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