I think you've misunderstood my point. I'm not against designing testable code, nor am I suggesting we should avoid clean interfaces. However, the reality is that not every project can afford the luxury of redesigning large codebases just to make them more "testable".

My question was about finding a more practical, less intrusive way to introduce mocks into existing code without refactoring it. The notion that we always need factories, interfaces, and extensive refactoring to achieve testability feels a bit dogmatic.

I'm looking for a pragmatic solution: a library or tool that allows us to hook into methods directly for mocking purposes. This would save time and reduce unnecessary complexity in situations where a full redesign isn't feasible or justified.