https://davehogan.co.uk/tags/testing/ Recent content in Testing on Dave Hogan Hugo -- 0.155.2 en-gb Fri, 24 Jan 2025 20:55:21 +0100 https://davehogan.co.uk/posts/development/reflecting-on-the-need-for-abstracting-datetime-now/ Fri, 24 Jan 2025 20:55:21 +0100 https://davehogan.co.uk/posts/development/reflecting-on-the-need-for-abstracting-datetime-now/ <h2 id="unit-testing-newbie">Unit Testing Newbie</h2> <p>When I first started taking unit testing more seriously (it was 13+ years ago, don&rsquo;t fight me!) I didn&rsquo;t understand how to test something when I was using <code>DateTime.UtcNow</code>. My tests worked then failed a while later.</p> <p>I asked, on reflection, an embarrassing question on <a href="https://stackoverflow.com/questions/7661953/how-to-write-unit-test-for-time-sensitive-constant">Stack Overflow</a>. What made it embarrassing was that it showed my lack of understanding of non-deterministic values and testing code that used them. As I mentioned in this case it was usage of <code>DateTime</code> in <code>C#</code>.</p>