Vitest mock issue when running tests

[Faboslav]

Hello there,

i migrated the project from tsyringe, and it works perfectly fine.
When running vitest following occurs when i try to mock a dependency, which is normally injected in the constructor:

TypeError: Cannot read properties of undefined (reading 'provide')
 ❯ Container.bind node_modules/@needle-di/core/src/container.ts:92:73

Mentioned part of the code in test:

  const mockScenarioService = mockDeep<ScenarioService>();
  const mockSessionScenarioProgressProvider = mockDeep<SessionScenarioProgressProvider>();
  let sessionStepGuard: SessionStepGuard;

  beforeEach(() => {
    mockReset(mockScenarioService);
    mockReset(mockSessionScenarioProgressProvider);
    sessionStepGuard = new SessionStepGuard(mockScenarioService, mockSessionScenarioProgressProvider);
  });

Can this be due to some invalid or missing setting, like target of ES2022 or something like that?

[Faboslav]

Okay, so i found out, this happens, when test uses class which uses any kind of InjectionToken inside it in its injects, for example:

export const SCENARIO_REPOSITORY = new InjectionToken<ScenarioRepository>('SCENARIO_REPOSITORY');

  public constructor(
    private readonly scenarioRepository: ScenarioRepository = inject(SCENARIO_REPOSITORY),
  ) {}

which works in the app, but in the test its problematic, but i dont know why.

Trying string instead of token works for me:

private readonly scenarioRepository: ScenarioRepository = inject('ScenarioRepository'),

[dirkluijk]

Thanks for reporting this issue. Let's see if we can reproduce it.
From your first comment, I'd say it's because SessionStepGuard is undefined somehow, but I am still figuring out why.

Can you clone this StackBlitz and try to reproduce it in there? Alternatively, you can share me a reproduction in a Github repository.

[Faboslav]

Sorry, i was little bit busy, i will try to do some more debugging later :).

[dirkluijk]

Let me know, I am motivated to help you out here. ;)