Code Coverage: How to Measure It, Understand the Metrics, and Improve Your Tests
Whether you’re shipping a SaaS product or maintaining a legacy monolith, understanding what your tests actually exercise-and what they miss-can make the difference between a confident release and a 2AM incident page. This article walks you through the core coverage metrics, how to measure them with modern tools, and practical steps to improve code coverage without wasting effort on tests that don’t matter. Code Coverage reporting is available on Qodana Ultimate and Qodana Ultimate Plus licenses.
- ▪Whether you’re shipping a SaaS product or maintaining a legacy monolith, understanding what your tests actually exercise-and what they miss-can make the difference between a confident release and a 2AM incident page.
- ▪This article walks you through the core coverage metrics, how to measure them with modern tools, and practical steps to improve code coverage without wasting effort on tests that don’t matter.
- ▪Code Coverage reporting is available on Qodana Ultimate and Qodana Ultimate Plus licenses.
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| Original publisher | The JetBrains Blog |
| Canonical URL | https://blog.jetbrains.com/qodana/2026/07/code-coverage-tests/ |
| Publication time | Thu, 23 Jul 2026 09:49:34 +0000 |
| Retrieval time | 2026-07-26T10:01:46.789Z |
| Last seen | 2026-07-26T10:01:46.789Z |
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| Cluster | MivawyrBuvyK · 1 stories |
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Qodana The code quality platform for teams Follow Follow: X X RSS RSS Get Qodana All News Tutorials Features Opinion Code Coverage: How to Measure It, Understand the Metrics, and Improve Your Tests Kerry Beetge Code coverage is one of those metrics that every development team talks about but few use to its full potential. Whether you’re shipping a SaaS product or maintaining a legacy monolith, understanding what your tests actually exercise-and what they miss-can make the difference between a confident release and a 2AM incident page. This article walks you through the core coverage metrics, how to measure them with modern tools, and practical steps to improve code coverage without wasting effort on tests that don’t matter.
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