n together with the normal source code of the library. You can see this for example, at the <a href="https://github.com/ziglang/zig/blob/master/lib/std/array_list.zig"><code>array_list</code> module</a><a href="#fn2" class="footnote-ref" id="fnref2" role="doc-noteref"><sup>2</sup></a>. So, the standard that the Zig developers decided to adopt is to keep their unit tests together with the source code of the functionality that they are testing.</p>
<p>Each programmer might have a different opinion on this. So