NgRx Signal Store: How to mock entities?

I'm using an ngrx signal store with the withEntities Feature (https://ngrx.io/guide/signals/signal-store/entity-management), like so:

import { signalStore } from '@ngrx/signals';
import { withEntities } from '@ngrx/signals/entities';

type Todo = {
id: number;
text: string;
completed: boolean;
};

export const TodosStore = signalStore(
withEntities<Todo>()
);


Now I would like to have component tests, that use a mock state of that store. For a normal ngrx signal store this is well documented (https://ngrx.io/guide/signals/signal-store/testing#native-mocking), but how does it work for withEntities?

TestBed.configureTestingModule({
imports: [SomeComponent],
providers: [
{
provide: TodosStore,
useValue: mock //what to put here?
},
],
});

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