Lesson 1 · A check that can fail · step 6 of 901Read02Break it on purpose03Task 104Task 205Make it fail on the wrong result06Task 307Task 408Recap09TakeawayWorkshop · Task 3 of 4Read the runsLog in to read this lesson. A free account opens the introductory chapter.←Make it fail on the wrong resultCatch the always-zero total→