how to force `onDestroy` hook invokation from a ngrx signal store in unit test?

I'm using a SignalStore from @ngrx/signals in an Angular project.

My store has onInit and onDestroy hooks invoking methods from a dependency injected in the store.

import { signalStore, withHooks } from '@ngrx/signals';

class SomeDependency {
start() {
throw new Error('real implementation not relevent');
}
stop() {
throw new Error('real implementation not relevent');
}
}

const MyStore = signalStore(
withHooks((_store, dependency = inject(SomeDependency)) => ({
onInit() {
dependency.start();
},
onDestroy() {
dependency.stop();
},
})),
);


I'm able to test that dependency.start() is properly invoked when creating the store

it('should start dependency when created', () => {
const fakeDependency = { start: jest.fn(), stop: jest.fn() };
TestBed.configureTestingModule({
providers: [MyStore, { provide: SomeDependency, useValue: fakeDependency }],
});

TestBed.inject(MyStore);

expect(fakeDependency.start).toHaveBeenCalledOnce(); // test pass ✅
});


I am looking for a way to test that dependency.stop() is invoked when the store is somehow destroyed, but how can I force the store destruction?

it('should stop dependency when destroyed', () => {
const fakeDependency = { start: jest.fn(), stop: jest.fn() };
TestBed.configureTestingModule({
providers: [MyStore, { provide: SomeDependency, useValue: fakeDependency }],
});
const store = TestBed.inject(MyStore);

// MISSING: force store descruction here

expect(fakeDependency.stop).toHaveBeenCalledOnce(); // test fail ❌
});

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