orial/part-1/automated-testing/pass@2x.png" alt="All tests passing" width="1024" height="512"></p>
<p>It happens really quickly though—blink and you might miss it! In fact, I had to slow this animation down by a hundred times just so you can see it in action. I told you the robot has really, really fast hands!</p>
<p>As much as I enjoy watching this robot hard at work, the important thing here is that the test we wrote has <em>passed</em>, meaning everything is working exactly as we expect and the test UI