Nest: [Question | Bug] - getting sub injectable from TestingModule

[vlio20]

Hi,
When trying to get a sub injectable (for example Component) it returns null.
For example:

// DatabaseModule
@Module({
  modules: [],
  components: [
    SubService
  ]
})
export class AppModule {
}

// App Module
@Module({
  modules: [
    DatabaseModule
  ]
})
export class AppModule {
}

And then when trying to user createTestingModule:

const module = await Test.createTestingModule({
      modules: [AppModule]
}).compile();

const subService = appModule.get<SubService>(SubService);
concole.log(subModule) // null

I found this workaround:

const dbModule = appModule.select(DatabaseModule);
const subService = dbModule.get<SubService>(SubService);

concole.log(subService) // instance of SubService

So should the get method return also nested components of other dependent modules? If so, this is a bug.

[kamilmysliwiec]

Hey @vlio20!
Nope. That's exactly why the select() method exists. There's a note about it here 🙂

[vlio20]

the including imported ones is a bit misleading (maybe only for me)

[kamilmysliwiec]

True, right. Thanks @vlio20, will change this 🙂

[kamilmysliwiec]

Fixed, will be available in the next update. Thanks again @vlio20

[lock[bot]]

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