
<p><img src="/images/tutorial/part-1/automated-testing/pass-2@2x.png" alt="Tests still passing with the new tests" width="1024" height="512"></p>
<p>For the rest of the tutorial, we will continue to add more automated tests as we develop new features. Testing is optional but highly recommended. Tests don't affect the functionality of your app, they just protect it from <em>regressions</em>, which is just a fancy way of saying "accidental breakages."</p>
<p>If you are in a hurry, you can skip over the testi