--- title: JetBrains Qodana | daily.dev description: Code coverage measures the percentage of source code executed by automated tests. This guide covers core coverage metrics (line, branch, condition, path), how... canonical: https://daily.dev/posts/jetbrains-qodana-bthpiwtj0 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: JetBrains Qodana | daily.dev og:description: Code coverage measures the percentage of source code executed by automated tests. This guide covers core coverage metrics (line, branch, condition, path), how... og:url: https://daily.dev/posts/jetbrains-qodana-bthpiwtj0 og:image: https://api.daily.dev/og/posts/BThpiwTj0.png og:image:alt: JetBrains Qodana og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # JetBrains Qodana **[JetBrains](https://daily.dev/sources/jetbrains)** · 15 min read · 0 upvotes · 0 comments ## Summary Code coverage measures the percentage of source code executed by automated tests. This guide covers core coverage metrics (line, branch, condition, path), how to measure them using tools like JaCoCo, Jest, pytest-cov, and Coverlet, and practical steps to improve coverage without wasting effort. Key takeaways: 80% is a healthy target for critical business logic, 100% is rarely practical, and high coverage doesn't guarantee bug-free code. The post also explains how to integrate coverage reports into CI/CD pipelines and JetBrains IDEs via Qodana, and warns against common pitfalls like using coverage as a KPI or ignoring branch-level metrics. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Why 90% Code Coverage Doesn’t Mean Your Tests Are Good](https://daily.dev/posts/why-90-code-coverage-doesn-t-mean-your-tests-are-good-2fwmyd7ne) · SD Times · 0 upvotes · 1 comments - [Making your code base better will make your code coverage worse](https://daily.dev/posts/making-your-code-base-better-will-make-your-code-coverage-worse-ovk4jq9bx) · Stack Overflow Blog · 1 upvotes · 0 comments - [Code Quality Q&A](https://daily.dev/posts/code-quality-q-a-x8k2x36fi) · JetBrains · 1 upvotes · 1 comments --- Tags: [#devtools](https://daily.dev/tags/devtools), [#testing](https://daily.dev/tags/testing), [#cicd](https://daily.dev/tags/cicd) [View this post on daily.dev](https://daily.dev/posts/jetbrains-qodana-bthpiwtj0) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"JetBrains Qodana","url":"https://daily.dev/posts/jetbrains-qodana-bthpiwtj0","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/jetbrains-qodana-bthpiwtj0"},"datePublished":"2026-07-23T10:21:47.203Z","dateModified":"2026-07-23T10:22:14.126Z","description":"Code coverage measures the percentage of source code executed by automated tests. 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