Coverlet on Artur Rios Labhttps://lab.artur-rios.tech/tags/coverlet/Recent content in Coverlet on Artur Rios LabHugoen-usWed, 21 Oct 2026 13:10:00 +0000Test Coverage in .NET: What It Measures and How to Collect Ithttps://lab.artur-rios.tech/dotnet/test-coverage/Wed, 21 Oct 2026 13:10:00 +0000https://lab.artur-rios.tech/dotnet/test-coverage/<p>A pull request comes back with a comment: &ldquo;coverage dropped from 84% to 81%&rdquo;. What does the number mean? Which 3% went missing, and does it matter? Coverage is one of the few test metrics that every .NET tool can produce for free, and one of the easiest to misread. It is very good at answering <em>which code did no test run?</em> and close to useless at answering <em>are the tests any good?</em></p>