Writing N or 1 tests N times, depending on how many times I have to rewrite the "unit" for some soft idea of completeness. After the red/green 1 case, it necessarily has to expand to N cases as the unit is rewritten to handle the additional cases imagined (boundary, incorrect inputs, exceptions, etc). Now I see that I could have created optimizations in the method and rewrite it again and leverage the existing red/green.
Everyone understands the idea, it's just a massive time sink for no more benefit than a test-after methodology provides.
Everyone understands the idea, it's just a massive time sink for no more benefit than a test-after methodology provides.