[bug]: Stub and verify test in stacked navigation service.

Describe the bug

I am trying to stub and verify popUntil() to write test for my viewmodel. @ferrarafer @FilledStacks Could you please explain how i would achieve this in stacked navigation service.

To reproduce

Here are the steps to reproduce this:

In testhelpers

MockNavigationService getAndRegisterNavigationService() {
removeRegistrationIfExists<NavigationService>();
final service = MockNavigationService();
locator.registerSingleton<NavigationService>(service);
return service;
}

Test case

setUp(() {
viewModel = CustomerConfirmDetailsViewModel();
});
test('Test navigateToDashboard():', () async {
// Arrange
final navService = getAndRegisterNavigationService();
when(navService.popUntil(ModalRoute.withName(Routes.dashboardAgentView)))
    .thenAnswer((realInvocation) {});
// Act
viewModel.navigateToDashboard();
// Assert
verify(navService.popUntil(ModalRoute.withName(Routes.dashboardAgentView)));
});

Error: No matching calls. All calls: MockNavigationService.popUntil(Closure: (Route) => bool, {id: null}) (If you called verify(...).called(0);, please instead use verifyNever(...);.)

Expected behavior

I would like to be able to test when popUntil(), pushNamedAndRemoveUntil() and locator().back().

Screenshots

No response

Additional Context