如何编写测试，没有mocking 的nestjs 中的存储库

Question

I've started working on a small project and I'm now in the process of writing tests for this project, But the problem now I'm facing is related to injecting the repository. I have the following code in beforeEach function

const moduleFixture = await Test.createTestingModule({
            controllers:[CustomersController],
            providers:[
                CustomersService,
                {
                    provide: getRepositoryToken(File),
                    useValue: Repository
                },
            ]
        }).compile();

And I have a test which it calls an endpoint, Now every time I run the tests, This error is showing up

Cannot read property 'find' of undefined

And it's obvious because I have a code in my CustomerService class, this.fileRepository.find() , And the reason it throws the error because the file repository has no methods which any other repository should have.

I'll appreciate any help, Thanks.

Answer 1

If you're wanting to use Repository you should be using useClass instead of useValue . You can see several examples of Repository mocking in this GitHub repo