--- title: How to write unit tests | daily.dev description: Tests are a way to explicitly set expectations about code. Good test coverage is a safety net that allows you to refactor code with more courage. Writing unit... canonical: https://daily.dev/posts/how-to-write-unit-tests-pxmbkfidp twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How to write unit tests | daily.dev og:description: Tests are a way to explicitly set expectations about code. Good test coverage is a safety net that allows you to refactor code with more courage. Writing unit... og:url: https://daily.dev/posts/how-to-write-unit-tests-pxmbkfidp og:image: https://api.daily.dev/og/posts/PxmbKFIDp.png og:image:alt: How to write unit tests 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. # How to write unit tests **[Hashnode](https://daily.dev/sources/hashnode)** · 4 min read · 38 upvotes · 1 comments ## Summary Tests are a way to explicitly set expectations about code. Good test coverage is a safety net that allows you to refactor code with more courage. Writing unit tests forces you to think about units and how the responsibility should be spent between them, making your code more modular and easier to maintain. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@ricardomorato** · 2 upvotes > Great article! > > It has all three Fs. It is Fast to ready, Fun, and Feasible for day-to-day work. > > Congrats 👏🏼👏🏼👏🏼 ## Similar posts on daily.dev - [Don’t just attend KubeCon \+ CloudNativeCon, Merge Forward your experience\!](https://daily.dev/posts/don-t-just-attend-kubecon-cloudnativecon-merge-forward-your-experience--l0rpp73x8) · CNCF · 1 upvotes · 0 comments - [Announcing H2 2026 KCDs](https://daily.dev/posts/announcing-h2-2026-kcds-m96goajm1) · CNCF · 1 upvotes · 0 comments - [Two months of Open Community Groups](https://daily.dev/posts/two-months-of-open-community-groups-asf52zhbs) · CNCF · 0 upvotes · 0 comments - [CNCF Unveils Schedule for KubeCon \+ CloudNativeCon Europe 2026](https://daily.dev/posts/cncf-unveils-schedule-for-kubecon-cloudnativecon-europe-2026-ikhcoa5cb) · CNCF · 2 upvotes · 0 comments - [CNCF Debuts KubeCon \+ CloudNativeCon Japan 2026 Schedule](https://daily.dev/posts/cncf-debuts-kubecon-cloudnativecon-japan-2026-schedule-xp5pyudub) · CNCF · 1 upvotes · 0 comments --- Tags: [#general-programming](https://daily.dev/tags/general-programming), [#testing](https://daily.dev/tags/testing) [View this post on daily.dev](https://daily.dev/posts/how-to-write-unit-tests-pxmbkfidp) ```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":"How to write unit tests","url":"https://daily.dev/posts/how-to-write-unit-tests-pxmbkfidp","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-to-write-unit-tests-pxmbkfidp"},"datePublished":"2022-04-06T19:39:19.183Z","dateModified":"2022-04-06T19:39:19.184Z","description":"Tests are a way to explicitly set expectations about code. 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It is Fast to ready, Fun, and Feasible for day-to-day work.\nCongrats 👏🏼👏🏼👏🏼","datePublished":"2022-04-06T21:57:18.690Z","url":"https://daily.dev/posts/PxmbKFIDp#c-uaPPRzDLx","author":{"@type":"Person","name":"Ricardo Morato Rocha","url":"https://daily.dev/ricardomorato","image":"https://avatars.githubusercontent.com/u/56000167?v=4"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2}}]} ```