[commandlinefan]

> tries and fails to develop a sudoku solver and keeps failing at it

But that's because he deliberately does it in a stupid way to make TDD look bad, just like the linked article does with his "quicksort test". But that's beside the point - of course a stupid person would write a stupid test, but that same stupid person would write a stupid implementation, too... but at least there would be a test for it.

[evouga]

Huh? Ron Jeffries is a champion of TDD (see for instance https://ronjeffries.com/articles/019-01ff/tdd-one-word/). He most certainly wasn't deliberately implementing Sudoku in a stupid way to make TDD look bad!