ting"><a class="anchor" href="#testing"></a>Testing</h2>
<div class="sectionbody">
<div class="paragraph">
<p>It&#8217;s important to test your code - even for a little toy command like this one.
Moreover, your patch won&#8217;t be accepted into the Git tree without tests. Your
tests should:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Illustrate the current behavior of the feature</p>
</li>
<li>
<p>Prove the current behavior matches the expected behavior</p>
</li>
<li>
<p>Ensure the externally-visible behav