Nest can't resolve dependencies of the JokeEntityRepository (?) - jestjs

Question

I am learning NestJS and I am trying to test a service which incorporates a repository with TypeORM. It compiles fine without errors, but when I run the test it throw an error.
I know it is a test dependency problem but I can't figure it out. I am trying this test:
describe('JokesService', () => {
let service: JokesService;
beforeEach(async () => {
const module: TestingModule = await Test.createTestingModule({
providers: [],
imports: [
TypeOrmModule.forFeature([JokeEntity])
],
}).compile();
service = module.get<JokesService>(JokesService);
});
it('should be defined', () => {
expect(service).toBeDefined();
});
});
The module:
#Module({
providers: [JokesService],
imports: [
TypeOrmModule.forFeature([JokeEntity])
],
controllers: [JokesController],
})
export class JokesModule {}
The service:
#Injectable()
export class JokesService {
constructor(
#InjectRepository(JokeEntity)
private readonly jokeRepository: MongoRepository<JokeEntity>
) {}
}
The main module:
#Module({
imports: [
TypeOrmModule.forRoot({
type: 'mongodb',
url: dbUri,
entities: [__dirname + '/**/*.entity{.ts,.js}'],
ssl: true,
useUnifiedTopology: true,
useNewUrlParser: true,
}),
JokesModule
],
controllers: [AppController],
providers: [AppService],
})
export class AppModule {}
And the error:
Nest cant resolve dependencies of the JokeEntityRepository (?).
Please make sure that the argument Connection at index [0] is available in the TypeOrmModule context.
Potential solutions:
- If Connection is a provider, is it part of the current TypeOrmModule?
- If Connection is exported from a separate #Module, is that module imported within TypeOrmModule?
#Module({
imports: [ /* the Module containing Connection */ ]
})
Can someone tell me what I am missing in the test dependencies? Thank You.

Answer 1

Try to import your JokesModule inside your app.module.
#Module({
imports: [
TypeOrmModule.forRoot({
type: 'mongodb',
url: dbUri,
entities: [__dirname + '/**/*.entity{.ts,.js}'],
ssl: true,
useUnifiedTopology: true,
useNewUrlParser: true,
}),
JokesModule,
],
controllers: [AppController],
providers: [AppService],
})
export class AppModule {}