Clare Sudbery<p>How can you use code coverage and mutation testing to add tests to legacy code? At @mendercon last year, I demonstrated this powerful technique step by step on the Gilded Rose kata, which is hosted by @emilybache on her GitHub account: <a href="https://github.com/emilybache/GildedRose-Refactoring-Kata" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">github.com/emilybache/GildedRo</span><span class="invisible">se-Refactoring-Kata</span></a> </p><p>You can watch the talk here: <a href="https://www.youtube.com/watch?v=0qna5cuzDI0" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">youtube.com/watch?v=0qna5cuzDI0</span><span class="invisible"></span></a></p><p><a href="https://mastodon.social/tags/CSudberyRecordings" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CSudberyRecordings</span></a> <a href="https://mastodon.social/tags/CodeCoverage" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CodeCoverage</span></a> <a href="https://mastodon.social/tags/MutationTesting" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MutationTesting</span></a> <a href="https://mastodon.social/tags/GildedRose" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GildedRose</span></a> <a href="https://mastodon.social/tags/Refactoring" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Refactoring</span></a> <a href="https://mastodon.social/tags/UnitTests" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UnitTests</span></a></p>