@EntityRepository is deprecated

[xarielah]

This decorator of which using to create custom repositories is deprecated.
Please be aware Ariel :)

[CaesarBourne]

create a custom repository like below and use it as the entity repository, passing the entity as an argument

export function CustomRepository(entity: Function): ClassDecorator {
return SetMetadata(TYPEORM_EX_CUSTOM_REPOSITORY, entity);
}

@CustomRepository(Task)
export class TaskRepository extends Repository {
constructor(private dataSource: DataSource) {
super(Task, dataSource.createEntityManager());
}

[mertkaanguzel]

I tried the solution on the Stackoverflow. It works but it doesn't use EntityRepository or CustomRepositoy decorators.

[xwlee]

https://github.com/xwlee/nestjs-task-management/blob/main/src/tasks/tasks.repository.ts

[szvitek]

https://github.com/xwlee/nestjs-task-management/blob/main/src/tasks/tasks.repository.ts

This is how I ended up with. Does anyone know how to write a unit test for the repository with the custom datasource?

my base concept is something like this:

const mockDataSource = () => ({
  createEntityManager: jest.fn(() => ({
    save: jest.fn(),
  })),
});
//...
const module = await Test.createTestingModule({
      providers: [
        {
          provide: UserRepository,
          useFactory: (dataSource: DataSource) => {
            return new UserRepository(dataSource);
          },
          inject: [DataSource],
        },
        { provide: DataSource, useFactory: mockDataSource },
      ],
    }).compile();

but if I do this my test breaks with TypeError: Cannot read properties of undefined (reading 'getMetadata')

even if I try with this:

jest
      .spyOn(UserRepository.prototype, 'save')
      .mockImplementation(async (entity) => {
        return { ...entity, id: 1 } as User;
      });