@NetanelBasal I am not sure whether that is the best approach. From that what I was able to figure out, we can not override providers after calling compileComponents. If we want to override it, we need to completely reset current configuration and create new one. That's what I have done.

I think similar problem may occur within other create-factory.ts files. If current solution will be fine I may also fix it in other places.

@NetanelBasal any update with this one?

I don't think we need to use resetTestingModule for every provider. The issue is only when using InjectionToken, right?

To be honest based one the that answer from issue #337 (comment) and linked there issue from Angular repo I am not sure that problem occur only for InjectionToken. I have understood that you just can not override providers (any) when TestBed is already instantiated.

Now I'm not sure what's the issue. Works for me - https://github.com/ngneat/bind-query-params/blob/master/projects/ngneat/bind-query-params/src/lib/lib.spec.ts#L115

Maybe to better figure out that issue you may get into my branch and play with code and tests. What I understand as the problem there is that we just cannot override providers when the TestBed.compileComponents() is called and that what's mostly happen in beforeach block where we execute createComponentFactory.