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      <div class="chatlog__message-aside"><img class="chatlog__avatar" src="https://cdn.discordapp.com/avatars/387843027072188417/47c96b35135f39a117c2d3e88950c7ab.png?size=512" alt="Avatar" loading="lazy"></div>
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        <div class="chatlog__header"><span class="chatlog__author" style="color:rgb(241,196,15)" title="kuniwak" data-user-id="387843027072188417">Kuniwak</span> <a href="/channels/387857770038427648?category=main&amp;channel=testing&amp;message_id=504229214195548190"><span class="chatlog__timestamp" title="Tuesday, October 23, 2018 9:45 AM"></span></a><a href="#chatlog__message-container-504228971043618817">10/23/2018 9:45 AM</a></div>
        <div class="chatlog__content chatlog__markdown"><span class="chatlog__markdown-preserve">えと、このスクショが何を意味してるのかは微妙ですね</span></div>
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        <div class="chatlog__short-timestamp" title="Tuesday, October 23, 2018 9:46 AM">9:46 AM</div>
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        <div class="chatlog__content chatlog__markdown"><span class="chatlog__markdown-preserve">mutation testing は、テスト対象のコードに意図的にバグを埋め込み、それに対してテストを実行する検査手法ですね。なので、基本的にはテストコードの品質がわかるような類の手法です</span></div>
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        <div class="chatlog__short-timestamp" title="Tuesday, October 23, 2018 9:46 AM">9:46 AM</div>
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        <div class="chatlog__content chatlog__markdown"><span class="chatlog__markdown-preserve">例えば、 <code class="chatlog__markdown-pre chatlog__markdown-pre--inline">a &gt; b</code> を <code class="chatlog__markdown-pre chatlog__markdown-pre--inline">a &lt; b</code> とかに書き換えたときに、ちゃんとテストが検知できるか、みたいなのを検査するイメージです</span> <span class="chatlog__edited-timestamp" title="Tuesday, October 23, 2018 9:47 AM">(edited)</span></div>
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