Accessing the correct instance in Swift Testing

[FabioFiorita]

I'm facing an issue accessing the instance of my AuthService in my tests. Specifically, I can see that MockAuthService is being initialized, and the function is being called, but when I try to access the instance in my test using Container.shared.authService, it returns a different instance instead of the expected MockAuthService.

Here’s a simplified version of my code:

// ViewModel
@ObservationIgnored
@Injected(\.authService) private var authService

func signIn() async {
    // Sign in logic
}

// Test
@Test
func testSignInWhenSignInSucceeds() async {
    Container.shared.authService.register { MockAuthService() }
    let viewModel = SignInView.ViewModel()

    viewModel.email = "email"
    viewModel.password = "password"

    await viewModel.signIn()
    let authService = Container.shared.authService() // This returns a different instance
}

[hmlongco]

Yes, it does. Every time a Factory is asked to resolve an instance it returns a new instance. (Unless cached.)

[FabioFiorita]

Thank you for the clarification! I wasn't aware that it returns a new instance. I will try a different approach for my tests.