> They did not say they didn't do that, you're assuming. In the article, the author confirms his test was not working: > But that bug in my code ruined one mo

> They did not say they didn't do that, you're assuming. In the article, the author confirms his test was not working: > But that bug in my code ruined one month of my work. I coded without realizing tests don't work at all. OUCH! The issue is exactly what parent mentions, that OP did not let his test fail first so that they were never confident in that the test worked.