I've found the opposite. When I start to write a test, I often realize I don't know exactly what I need to do because the requirements are unclear or somehow co

I've found the opposite. When I start to write a test, I often realize I don't know exactly what I need to do because the requirements are unclear or somehow conflict with some other assumption of the system. That realization prompts me to go talk to my product owner, which forces them to clarify their requirements and target a more coherent idea of what the system should be.