Feature Request

Is your feature request related to a problem? Please describe.

While trying to write tests for NestJS, I'm trying to override nestjs-middleware, by defining it with overrideProvider(MyMiddleware).useValue({ use(req, res, next) { next() }).
This doesn't work however, since he just keeps dropping in the 'real' middleware (MyMiddleware) instead of the overridden one.

Describe the solution you'd like

Just like overrideProvider or overrideInterceptor, it would be useful to have a similar overrideMiddleware function for testing purposes.

What is the motivation / use case for changing the behavior?

Better/easier testability of NestJs applications!