How to Write a Test Pass

"I've been building software with agile, like long before they call it agile," he says. "The whole red light green light refactor thing is that it's like, write something that breaks and then put in any old thing that'll make the test pass ... I'm doing trivial stuff." He adds: "Sometimes you're not sure what behavior you're trying to write at the beginning because you're just exploring that as a means"