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<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.0/clipboard.min.js"></script><title data-rh="true">Guiding Principles | Testing Library</title><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:image" content="https://testing-library.com/img/octopus-128x128.png"><meta data-rh="true" name="twitter:image" content="https://testing-library.com/img/octopus-128x128.png"><meta data-rh="true" property="og:url" content="https://testing-library.com/docs/guiding-principles"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="current"><meta data-rh="true" name="docusaurus_tag" content="docs-default-current"><meta data-rh="true" name="docsearch:version" content="current"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-current"><meta data-rh="true" property="og:title" content="Guiding Principles | Testing Library"><meta data-rh="true" name="description" content="[The more your tests resemble the way your software is used, the more"><meta data-rh="true" property="og:description" content="[The more your tests resemble the way your software is used, the more"><link data-rh="true" rel="icon" href="/img/octopus-32x32.png"><link data-rh="true" rel="canonical" href="https://testing-library.com/docs/guiding-principles"><link data-rh="true" rel="alternate" href="https://testing-library.com/docs/guiding-principles" hreflang="en"><link data-rh="true" rel="alternate" href="https://testing-library.com/docs/guiding-principles" hreflang="x-default"><link data-rh="true" rel="preconnect" href="https://TUPO88CFRP-dsn.algolia.net" crossorigin="anonymous"><link rel="stylesheet" href="/assets/css/styles.67d9695e.css">
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class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_OVgt"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Getting Started</span><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Guiding Principles</span><meta itemprop="position" content="2"></li></ul></nav><div class="theme-doc-markdown markdown"><header><h1>Guiding Principles</h1></header><blockquote><p><a href="https://twitter.com/kentcdodds/status/977018512689455106" target="_blank" rel="noopener noreferrer">The more your tests resemble the way your software is used, the more
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confidence they can give you.</a></p></blockquote><p>We try to only expose methods and utilities that encourage you to write tests
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that closely resemble how your web pages are used.</p><p>Utilities are included in this project based on the following guiding
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principles:</p><ol><li>If it relates to rendering components, then it should deal with DOM nodes
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rather than component instances, and it should not encourage dealing with
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component instances.</li><li>It should be generally useful for testing the application components in the
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way the user would use it. We <em>are</em> making some trade-offs here because
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we're using a computer and often a simulated browser environment, but in
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general, utilities should encourage tests that use the components the way
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they're intended to be used.</li><li>Utility implementations and APIs should be simple and flexible.</li></ol><p>At the end of the day, what we want is for this library to be pretty
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light-weight, simple, and understandable.</p></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://github.com/testing-library/testing-library-docs/edit/main/docs/guiding-principles.mdx" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_vwxv"><span class="theme-last-updated">Last updated<!-- --> on <b><time datetime="2020-11-04T01:16:36.000Z">Nov 4, 2020</time></b> by <b>Matan Borenkraout</b></span></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/docs/"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Introduction</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/docs/dom-testing-library/faq"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">FAQ</div></a></nav></div></div></div></div></main></div></div><footer class="footer"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Docs</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/docs">Getting Started</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/example-codesandbox">Examples</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/dom-testing-library/api">API</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/dom-testing-library/faq">Help</a></li></ul></div><div class="col footer__col"><div class="footer__title">Community</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/blog">Blog</a></li><li class="footer__item"><a href="https://stackoverflow.com/questions/tagged/react-testing-library" target="_blank" rel="noopener noreferrer" class="footer__link-item">Stack Overflow<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li class="footer__item"><a href="https://discord.gg/testing-library" target="_blank" rel="noopener noreferrer" class="footer__link-item">Discord<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li></ul></div><div class="col footer__col"><div class="footer__title">More</div><ul class="footer__items clean-list"><li class="footer__item">
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