Email: My Skill Makes Claude GREAT At TDD

Subject:
My Skill Makes Claude GREAT At TDD
Received:
2/19/2026, 7:24:02 PM
From:
"Matt Pocock (AI Hero)" <matt@aihero.dev>
To:
porch.hat.81@rss.andrealin.it
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&lt;p class="" style="margin:1em 0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen-Sans,Ubuntu,Cantarell,'Helvetica Neue',sans-serif;color:#2d2d2f;font-size:16px;line-height:1.5"&gt;Hey ,&lt;/p&gt;
&lt;p class="" style="margin:1em 0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen-Sans,Ubuntu,Cantarell,'Helvetica Neue',sans-serif;color:#2d2d2f;font-size:16px;line-height:1.5"&gt;Here’s a question you’ve probably wondered about: &lt;strong&gt;Why do agents write tests that don’t actually test anything?&lt;/strong&gt;&lt;/p&gt;
&lt;p class="" style="margin:1em 0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen-Sans,Ubuntu,Cantarell,'Helvetica Neue',sans-serif;color:#2d2d2f;font-size:16px;line-height:1.5"&gt;The problem? Agents tend to work in horizontal slices, write all the tests at once, then implement everything to pass them. But here’s the trap: tests written in bulk test &lt;em&gt;imagined&lt;/em&gt; behavior, not observed behavior.&lt;/p&gt;
&lt;p class="" style="margin:1em 0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen-Sans,Ubuntu,Cantarell,'Helvetica Neue',sans-serif;color:#2d2d2f;font-size:16px;line-height:1.5"&gt;So I built a skill that forces agents to work differently. &lt;strong&gt;One test. One implementation. Repeat.&lt;/strong&gt; This constraint makes a real difference in test quality.&lt;/p&gt;
&lt;p class="" style="margin:1em 0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen-Sans,Ubuntu,Cantarell,'Helvetica Neue',sans-serif;color:#2d2d2f;font-size:16px;line-height:1.5"&gt;When an agent has to make a test pass immediately after writing it, it can’t skip the work. The tests end up more honest. The code ends up more reliable.&lt;/p&gt;
&lt;p class="" style="margin:1em 0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen-Sans,Ubuntu,Cantarell,'Helvetica Neue',sans-serif;color:#2d2d2f;font-size:16px;line-height:1.5"&gt;In the full article, I’m breaking down:&lt;/p&gt;
&lt;ul class="unordered_list" style="margin:1em 0;margin-left:1em;padding:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen-Sans,Ubuntu,Cantarell,'Helvetica Neue',sans-serif;color:#2d2d2f;font-size:16px;line-height:1.5;list-style-position:outside !important"&gt;
&lt;li class="list_item" style="padding:0 0 0 1em;margin:0;margin-left:1em"&gt;&lt;span&gt;Why agents fail at TDD (and how to fix it)&lt;/span&gt;&lt;/li&gt;
&lt;li class="list_item" style="padding:0 0 0 1em;margin:0;margin-left:1em"&gt;&lt;span&gt;The difference between tests that matter and tests that are just debt&lt;/span&gt;&lt;/li&gt;
&lt;li class="list_item" style="padding:0 0 0 1em;margin:0;margin-left:1em"&gt;&lt;span&gt;How to structure agent work so the tests actually verify real behavior&lt;/span&gt;&lt;/li&gt;
&lt;li class="list_item" style="padding:0 0 0 1em;margin:0;margin-left:1em"&gt;&lt;span&gt;The planning phase that makes everything else happen&lt;/span&gt;&lt;/li&gt;
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&lt;p class="" style="margin:1em 0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen-Sans,Ubuntu,Cantarell,'Helvetica Neue',sans-serif;color:#2d2d2f;font-size:16px;line-height:1.5"&gt;I’ve been using this approach for a few weeks now and it’s made a big difference in the quality of the tests I'm producing.&lt;/p&gt;
&lt;p class="" style="margin:1em 0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen-Sans,Ubuntu,Cantarell,'Helvetica Neue',sans-serif;color:#2d2d2f;font-size:16px;line-height:1.5"&gt;Check out the skill and a breakdown here:&lt;/p&gt;
&lt;p class="" style="margin:1em 0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen-Sans,Ubuntu,Cantarell,'Helvetica Neue',sans-serif;color:#2d2d2f;font-size:16px;line-height:1.5"&gt;&lt;a href="https://7751c435.click.convertkit-mail2.com/0vu563vedduguowng4pslhv88r855snh77003/48hvh7umvp9wxxhx/aHR0cHM6Ly93d3cuYWloZXJvLmRldi9za2lsbC10ZXN0LWRyaXZlbi1kZXZlbG9wbWVudC1jbGF1ZGUtY29kZQ==" target="_blank" class="ck-link" rel="noopener noreferrer" style="color:#0875c1" url-id="1832116532"&gt;Read the full article&lt;/a&gt;&lt;/p&gt;
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