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<meta property="og:description" content="The render function is the entry point for writing React Native Testing Library tests. It deeply renders the given React element and returns helpers to query the output components' structure. When using React context providers, like Redux Provider, you'll likely want to wrap rendered component with them. In such cases, it's convenient to create your own custom render method. Follow this great guide on how to set this up. Options {#render-options} The behavior of the render method can be customized by passing various options as a second argument of the RenderOptions type: wrapper option This option allows you to wrap the tested component, passed as the first option to the render() function, in an additional wrapper component. This is useful for creating reusable custom render functions for common React Context providers. concurrentRoot option {#concurrent-root} Set to true to enable concurrent rendering used in the React Native New Architecture. Otherwise render will default to legacy synchronous rendering. createNodeMock option This option allows you to pass createNodeMock option to ReactTestRenderer.create() method in order to allow for custom mock refs. You can learn more about this option from React Test Renderer documentation. unstable_validateStringsRenderedWithinText option This experimental option allows you to replicate React Native behavior of throwing Invariant Violation: Text strings must be rendered within a <Text> component error when you try to render string value under components different than <Text>, e.g., under <View>. React Test Renderer does not enforce this check; hence, by default, React Native Testing Library also does not check this. That might result in runtime errors when running your code on a device, while the code works without errors in tests. Result {#render-result} The render function returns the same queries and utilities as the screen object. We recommended using the screen object as more developer-friendly way. See this article from Kent C. Dodds for more details.">
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<meta name="description" content="The render function is the entry point for writing React Native Testing Library tests. It deeply renders the given React element and returns helpers to query the output components' structure. When using React context providers, like Redux Provider, you'll likely want to wrap rendered component with them. In such cases, it's convenient to create your own custom render method. Follow this great guide on how to set this up. Options {#render-options} The behavior of the render method can be customized by passing various options as a second argument of the RenderOptions type: wrapper option This option allows you to wrap the tested component, passed as the first option to the render() function, in an additional wrapper component. This is useful for creating reusable custom render functions for common React Context providers. concurrentRoot option {#concurrent-root} Set to true to enable concurrent rendering used in the React Native New Architecture. Otherwise render will default to legacy synchronous rendering. createNodeMock option This option allows you to pass createNodeMock option to ReactTestRenderer.create() method in order to allow for custom mock refs. You can learn more about this option from React Test Renderer documentation. unstable_validateStringsRenderedWithinText option This experimental option allows you to replicate React Native behavior of throwing Invariant Violation: Text strings must be rendered within a <Text> component error when you try to render string value under components different than <Text>, e.g., under <View>. React Test Renderer does not enforce this check; hence, by default, React Native Testing Library also does not check this. That might result in runtime errors when running your code on a device, while the code works without errors in tests. Result {#render-result} The render function returns the same queries and utilities as the screen object. We recommended using the screen object as more developer-friendly way. See this article from Kent C. Dodds for more details."></head>
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Matchers</span></div><div class="rp-sidebar-item__right"></div></a><div class="rp-sidebar-item rp-sidebar-group rp-sidebar-item--group-item" style="padding-left:calc(12px * 1 + 12px)" data-depth="1"><div class="rp-sidebar-item__left"><span>Triggering events</span></div><div class="rp-sidebar-item__right"><div style="cursor:pointer;transition:transform 0.2s ease-out;transform:rotate(90deg)"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="13" fill="none" viewBox="0 0 12 13"><path fill="#BCBBC2" d="M6.5 4.5h1v-1h-1v-1h-1v1h-1v1h1v6h1zm-2 0h-1v1h1zm4 0h-1v1h1zm-5 2v-1h-1v1zm6-1h-1v1h1z"></path></svg></div></div></div><div style="display:grid;grid-template-rows:1fr;transition:grid-template-rows 0.2s ease-out"><div style="overflow:hidden"><a href="/react-native-testing-library/12.x/docs/api/events/fire-event" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 2 + 12px)" data-depth="2"><div class="rp-sidebar-item__left"><span>Fire Event</span></div><div class="rp-sidebar-item__right"></div></a><a href="/react-native-testing-library/12.x/docs/api/events/user-event" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 2 + 12px)" data-depth="2"><div class="rp-sidebar-item__left"><span>User Event</span></div><div class="rp-sidebar-item__right"></div></a></div></div><div class="rp-sidebar-item rp-sidebar-group rp-sidebar-item--group-item" style="padding-left:calc(12px * 1 + 12px)" data-depth="1"><div class="rp-sidebar-item__left"><span>Miscellaneous</span></div><div class="rp-sidebar-item__right"><div style="cursor:pointer;transition:transform 0.2s ease-out;transform:rotate(90deg)"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="13" fill="none" viewBox="0 0 12 13"><path fill="#BCBBC2" d="M6.5 4.5h1v-1h-1v-1h-1v1h-1v1h1v6h1zm-2 0h-1v1h1zm4 0h-1v1h1zm-5 2v-1h-1v1zm6-1h-1v1h1z"></path></svg></div></div></div><div style="display:grid;grid-template-rows:1fr;transition:grid-template-rows 0.2s ease-out"><div style="overflow:hidden"><a href="/react-native-testing-library/12.x/docs/api/misc/accessibility" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 2 + 12px)" data-depth="2"><div class="rp-sidebar-item__left"><span>Accessibility</span></div><div class="rp-sidebar-item__right"></div></a><a href="/react-native-testing-library/12.x/docs/api/misc/async" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 2 + 12px)" data-depth="2"><div class="rp-sidebar-item__left"><span>Async utilities</span></div><div class="rp-sidebar-item__right"></div></a><a href="/react-native-testing-library/12.x/docs/api/misc/config" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 2 + 12px)" data-depth="2"><div class="rp-sidebar-item__left"><span>Config</span></div><div class="rp-sidebar-item__right"></div></a><a href="/react-native-testing-library/12.x/docs/api/misc/other" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 2 + 12px)" data-depth="2"><div class="rp-sidebar-item__left"><span>Other</span></div><div class="rp-sidebar-item__right"></div></a><a href="/react-native-testing-library/12.x/docs/api/misc/render-hook" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 2 + 12px)" data-depth="2"><div class="rp-sidebar-item__left"><span>Render Hook</span></div><div class="rp-sidebar-item__right"></div></a></div></div></div></div><div class="rp-sidebar-item rp-sidebar-group" style="padding-left:12px" data-depth="0"><div class="rp-sidebar-item__left"><span>Guides</span></div><div class="rp-sidebar-item__right"><div style="cursor:pointer;transition:transform 0.2s ease-out;transform:rotate(90deg)"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="13" fill="none" viewBox="0 0 12 13"><path fill="#BCBBC2" d="M6.5 4.5h1v-1h-1v-1h-1v1h-1v1h1v6h1zm-2 0h-1v1h1zm4 0h-1v1h1zm-5 2v-1h-1v1zm6-1h-1v1h1z"></path></svg></div></div></div><div style="display:grid;grid-template-rows:1fr;transition:grid-template-rows 0.2s ease-out"><div style="overflow:hidden"><a href="/react-native-testing-library/12.x/docs/guides/how-to-query" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 1 + 12px)" data-depth="1"><div class="rp-sidebar-item__left"><span>How to Query</span></div><div class="rp-sidebar-item__right"></div></a><a href="/react-native-testing-library/12.x/docs/guides/troubleshooting" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 1 + 12px)" data-depth="1"><div class="rp-sidebar-item__left"><span>Troubleshooting</span></div><div class="rp-sidebar-item__right"></div></a><a href="/react-native-testing-library/12.x/docs/guides/faq" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 1 + 12px)" data-depth="1"><div class="rp-sidebar-item__left"><span>FAQ</span></div><div class="rp-sidebar-item__right"></div></a><a href="/react-native-testing-library/12.x/docs/guides/community-resources" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 1 + 12px)" data-depth="1"><div class="rp-sidebar-item__left"><span>Community Resources</span></div><div class="rp-sidebar-item__right"></div></a></div></div><div class="rp-sidebar-item rp-sidebar-group" style="padding-left:12px" data-depth="0"><div class="rp-sidebar-item__left"><span>Advanced Guides</span></div><div class="rp-sidebar-item__right"><div style="cursor:pointer;transition:transform 0.2s ease-out;transform:rotate(90deg)"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="13" fill="none" viewBox="0 0 12 13"><path fill="#BCBBC2" d="M6.5 4.5h1v-1h-1v-1h-1v1h-1v1h1v6h1zm-2 0h-1v1h1zm4 0h-1v1h1zm-5 2v-1h-1v1zm6-1h-1v1h1z"></path></svg></div></div></div><div style="display:grid;grid-template-rows:1fr;transition:grid-template-rows 0.2s ease-out"><div style="overflow:hidden"><a href="/react-native-testing-library/12.x/docs/advanced/testing-env" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 1 + 12px)" data-depth="1"><div class="rp-sidebar-item__left"><span>Testing Environment</span></div><div class="rp-sidebar-item__right"></div></a><a href="/react-native-testing-library/12.x/docs/advanced/understanding-act" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 1 + 12px)" data-depth="1"><div class="rp-sidebar-item__left"><span>Understanding Act</span></div><div class="rp-sidebar-item__right"></div></a></div></div><div class="rp-sidebar-item rp-sidebar-group" style="padding-left:12px" data-depth="0"><div class="rp-sidebar-item__left"><span>Migration Guides</span></div><div class="rp-sidebar-item__right"><div style="cursor:pointer;transition:transform 0.2s ease-out;transform:rotate(0deg)"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="13" fill="none" viewBox="0 0 12 13"><path fill="#BCBBC2" d="M6.5 4.5h1v-1h-1v-1h-1v1h-1v1h1v6h1zm-2 0h-1v1h1zm4 0h-1v1h1zm-5 2v-1h-1v1zm6-1h-1v1h1z"></path></svg></div></div></div><div style="display:grid;grid-template-rows:0fr;transition:grid-template-rows 0.2s ease-out"><div style="overflow:hidden"><a href="/react-native-testing-library/12.x/docs/migration/v12" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 1 + 12px)" data-depth="1"><div class="rp-sidebar-item__left"><span>v12 Migration</span></div><div class="rp-sidebar-item__right"></div></a><a href="/react-native-testing-library/12.x/docs/migration/jest-matchers" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 1 + 12px)" data-depth="1"><div class="rp-sidebar-item__left"><span>Jest Matchers</span></div><div class="rp-sidebar-item__right"></div></a><div class="rp-sidebar-item rp-sidebar-group rp-sidebar-item--group-item" style="padding-left:calc(12px * 1 + 12px)" data-depth="1"><div class="rp-sidebar-item__left"><span>Previous versions</span></div><div class="rp-sidebar-item__right"><div style="cursor:pointer;transition:transform 0.2s ease-out;transform:rotate(0deg)"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="13" fill="none" viewBox="0 0 12 13"><path fill="#BCBBC2" d="M6.5 4.5h1v-1h-1v-1h-1v1h-1v1h1v6h1zm-2 0h-1v1h1zm4 0h-1v1h1zm-5 2v-1h-1v1zm6-1h-1v1h1z"></path></svg></div></div></div><div style="display:grid;grid-template-rows:0fr;transition:grid-template-rows 0.2s ease-out"><div style="overflow:hidden"><a href="/react-native-testing-library/12.x/docs/migration/previous/v11" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 2 + 12px)" data-depth="2"><div class="rp-sidebar-item__left"><span>v11</span></div><div class="rp-sidebar-item__right"></div></a><a href="/react-native-testing-library/12.x/docs/migration/previous/v9" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 2 + 12px)" data-depth="2"><div class="rp-sidebar-item__left"><span>v9</span></div><div class="rp-sidebar-item__right"></div></a><a href="/react-native-testing-library/12.x/docs/migration/previous/v7" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 2 + 12px)" data-depth="2"><div class="rp-sidebar-item__left"><span>v7</span></div><div class="rp-sidebar-item__right"></div></a><a href="/react-native-testing-library/12.x/docs/migration/previous/v2" class="rp-sidebar-item rp-sidebar-item--group-item rp-link" style="padding-left:calc(12px * 2 + 12px)" data-depth="2"><div class="rp-sidebar-item__left"><span>v2</span></div><div class="rp-sidebar-item__right"></div></a></div></div></div></div></aside><div class="rp-doc-layout__doc"><main class="rp-doc-layout__doc-container"><div class="rp-doc rspress-doc"><!--$--><h1 class="rp-toc-include" id="render-function"><a href="#render-function" class="rp-header-anchor rp-link" aria-hidden="true">#</a><code>render</code> function<!-- --> </h1><div class="rp-not-doc rp-llms-container"><button class="rp-not-doc rp-llms-button rp-llms-copy-button"><div class="rp-llms-copy-button__icon-wrapper"><svg xmlns="http://www.w3.org/2000/svg" width="271" height="271" viewBox="0 0 271 271" class="rp-llms-copy-button__icon-success"><path fill="currentColor" d="M112.687 203.223H90.174v-22.514h22.512v-22.514h22.512v22.514h-22.511zm-22.514-22.514H67.66v-22.514h22.513zm-22.514-22.514H45.146v-22.512H67.66zm90.054 0h-22.514v-22.512h22.514zm22.514-22.512h-22.514v-22.514h22.514zm22.513-22.514h-22.513V90.655h22.513zm22.514-22.514H202.74V68.143h22.514z"></path></svg><svg xmlns="http://www.w3.org/2000/svg" width="272" height="272" viewBox="0 0 272 272" class="rp-llms-copy-button__icon-copy"><path fill="currentColor" fill-rule="evenodd" d="M45.883 23.368h123.823v22.514H68.396v146.336H45.883zm45.026 45.027H225.99v180.107H90.91zm22.514 22.513v135.08h90.053V90.908z" clip-rule="evenodd"></path></svg></div><span>Copy Markdown</span></button><button class="rp-llms-button rp-llms-view-options__trigger "><svg xmlns="http://www.w3.org/2000/svg" width="12" height="13" viewBox="0 0 12 13" class="rp-llms-view-options__arrow "><path fill="currentColor" d="M6.5 8.5h1v1h-1v1h-1v-1h-1v-1h1v-6h1zm-2 0h-1v-1h1zm4 0h-1v-1h1zm-5-2v1h-1v-1zm6 1h-1v-1h1z"></path></svg></button></div>
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<div class="rp-codeblock language-jsx"><div class="rp-codeblock__content"><div class="rp-codeblock__content__scroll-container rp-scrollbar rp-scrollbar--always"><pre class="shiki css-variables" style="background-color:var(--shiki-background);color:var(--shiki-foreground)" tabindex="0" data-lang="jsx"><code><span class="line"><span style="color:var(--shiki-token-keyword)">function</span><span style="color:var(--shiki-token-function)"> render</span><span style="color:var(--shiki-foreground)">(</span></span>
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||
<span class="line"><span style="color:var(--shiki-foreground)"> component</span><span style="color:var(--shiki-token-keyword)">:</span><span style="color:var(--shiki-token-function)"> React</span><span style="color:var(--shiki-foreground)">.</span><span style="color:var(--shiki-token-function)">Element</span><span style="color:var(--shiki-foreground)"><</span><span style="color:var(--shiki-token-constant)">any</span><span style="color:var(--shiki-foreground)">></span><span style="color:var(--shiki-token-punctuation)">,</span></span>
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<span class="line"><span style="color:var(--shiki-foreground)"> options</span><span style="color:var(--shiki-token-keyword)">?:</span><span style="color:var(--shiki-token-function)"> RenderOptions</span></span>
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<span class="line"><span style="color:var(--shiki-foreground)">)</span><span style="color:var(--shiki-token-keyword)">:</span><span style="color:var(--shiki-token-function)"> RenderResult</span></span></code></pre></div><div class="rp-code-button-group"><button class="rp-code-button-group__button rp-code-wrap-button" title="Toggle code wrap"><svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" class="rp-code-button-group__icon rp-code-button-group__icon--wrapped"><path fill="currentColor" d="M21 5H3v2h18zM3 19h7v-2H3zm0-6h15c1 0 2 .43 2 2s-1 2-2 2h-2v-2l-4 3 4 3v-2h2c2.95 0 4-1.27 4-4 0-2.72-1-4-4-4H3z"></path></svg><svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" class="rp-code-button-group__icon rp-code-button-group__icon--wrap"><path fill="currentColor" d="M16 7H3V5h13zM3 19h13v-2H3zm19-7-4-3v2H3v2h15v2z"></path></svg></button><button class="rp-code-button-group__button rp-code-copy-button" title="Copy code"><svg xmlns="http://www.w3.org/2000/svg" width="272" height="272" viewBox="0 0 272 272" class="rp-code-button-group__icon rp-code-copy-button__icon rp-code-copy-button__icon--copy"><path fill="currentColor" fill-rule="evenodd" d="M45.883 23.368h123.823v22.514H68.396v146.336H45.883zm45.026 45.027H225.99v180.107H90.91zm22.514 22.513v135.08h90.053V90.908z" clip-rule="evenodd"></path></svg><svg xmlns="http://www.w3.org/2000/svg" width="271" height="271" viewBox="0 0 271 271" class="rp-code-button-group__icon rp-code-copy-button__icon rp-code-copy-button__icon--success"><path fill="currentColor" d="M112.687 203.223H90.174v-22.514h22.512v-22.514h22.512v22.514h-22.511zm-22.514-22.514H67.66v-22.514h22.513zm-22.514-22.514H45.146v-22.512H67.66zm90.054 0h-22.514v-22.512h22.514zm22.514-22.512h-22.514v-22.514h22.514zm22.513-22.514h-22.513V90.655h22.513zm22.514-22.514H202.74V68.143h22.514z"></path></svg></button></div></div></div>
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<p>The <code>render</code> function is the entry point for writing React Native Testing Library tests. It deeply renders the given React element and returns helpers to query the output components' structure.</p>
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<div class="rp-codeblock language-jsx"><div class="rp-codeblock__content"><div class="rp-codeblock__content__scroll-container rp-scrollbar rp-scrollbar--always"><pre class="shiki css-variables" style="background-color:var(--shiki-background);color:var(--shiki-foreground)" tabindex="0" data-lang="jsx"><code><span class="line"><span style="color:var(--shiki-token-keyword)">import</span><span style="color:var(--shiki-foreground)"> { render</span><span style="color:var(--shiki-token-punctuation)">,</span><span style="color:var(--shiki-foreground)"> screen } </span><span style="color:var(--shiki-token-keyword)">from</span><span style="color:var(--shiki-token-string-expression)"> '@testing-library/react-native'</span><span style="color:var(--shiki-foreground)">;</span></span>
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||
<span class="line"></span>
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||
<span class="line"><span style="color:var(--shiki-token-function)">test</span><span style="color:var(--shiki-foreground)">(</span><span style="color:var(--shiki-token-string-expression)">'basic test'</span><span style="color:var(--shiki-token-punctuation)">,</span><span style="color:var(--shiki-foreground)"> () </span><span style="color:var(--shiki-token-keyword)">=></span><span style="color:var(--shiki-foreground)"> {</span></span>
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||
<span class="line"><span style="color:var(--shiki-token-function)"> render</span><span style="color:var(--shiki-foreground)">(<</span><span style="color:var(--shiki-token-constant)">MyApp</span><span style="color:var(--shiki-foreground)"> />);</span></span>
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||
<span class="line"><span style="color:var(--shiki-token-function)"> expect</span><span style="color:var(--shiki-foreground)">(</span><span style="color:var(--shiki-token-constant)">screen</span><span style="color:var(--shiki-token-function)">.getAllByRole</span><span style="color:var(--shiki-foreground)">(</span><span style="color:var(--shiki-token-string-expression)">'button'</span><span style="color:var(--shiki-token-punctuation)">,</span><span style="color:var(--shiki-foreground)"> { name</span><span style="color:var(--shiki-token-keyword)">:</span><span style="color:var(--shiki-token-string-expression)"> 'start'</span><span style="color:var(--shiki-foreground)"> }))</span><span style="color:var(--shiki-token-function)">.toBeOnTheScreen</span><span style="color:var(--shiki-foreground)">();</span></span>
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<span class="line"><span style="color:var(--shiki-foreground)">});</span></span></code></pre></div><div class="rp-code-button-group"><button class="rp-code-button-group__button rp-code-wrap-button" title="Toggle code wrap"><svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" class="rp-code-button-group__icon rp-code-button-group__icon--wrapped"><path fill="currentColor" d="M21 5H3v2h18zM3 19h7v-2H3zm0-6h15c1 0 2 .43 2 2s-1 2-2 2h-2v-2l-4 3 4 3v-2h2c2.95 0 4-1.27 4-4 0-2.72-1-4-4-4H3z"></path></svg><svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" class="rp-code-button-group__icon rp-code-button-group__icon--wrap"><path fill="currentColor" d="M16 7H3V5h13zM3 19h13v-2H3zm19-7-4-3v2H3v2h15v2z"></path></svg></button><button class="rp-code-button-group__button rp-code-copy-button" title="Copy code"><svg xmlns="http://www.w3.org/2000/svg" width="272" height="272" viewBox="0 0 272 272" class="rp-code-button-group__icon rp-code-copy-button__icon rp-code-copy-button__icon--copy"><path fill="currentColor" fill-rule="evenodd" d="M45.883 23.368h123.823v22.514H68.396v146.336H45.883zm45.026 45.027H225.99v180.107H90.91zm22.514 22.513v135.08h90.053V90.908z" clip-rule="evenodd"></path></svg><svg xmlns="http://www.w3.org/2000/svg" width="271" height="271" viewBox="0 0 271 271" class="rp-code-button-group__icon rp-code-copy-button__icon rp-code-copy-button__icon--success"><path fill="currentColor" d="M112.687 203.223H90.174v-22.514h22.512v-22.514h22.512v22.514h-22.511zm-22.514-22.514H67.66v-22.514h22.513zm-22.514-22.514H45.146v-22.512H67.66zm90.054 0h-22.514v-22.512h22.514zm22.514-22.512h-22.514v-22.514h22.514zm22.513-22.514h-22.513V90.655h22.513zm22.514-22.514H202.74V68.143h22.514z"></path></svg></button></div></div></div>
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<blockquote>
|
||
<p>When using React context providers, like Redux Provider, you'll likely want to wrap rendered component with them. In such cases, it's convenient to create your own custom <code>render</code> method. <a href="https://testing-library.com/docs/react-testing-library/setup#custom-render" target="_blank" rel="noopener noreferrer" class="rp-link">Follow this great guide on how to set this up</a>.</p>
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||
</blockquote>
|
||
<h3 class="rp-toc-include" id="render-options"><a href="#render-options" class="rp-header-anchor rp-link" aria-hidden="true">#</a>Options</h3>
|
||
<p>The behavior of the <code>render</code> method can be customized by passing various options as a second argument of the <code>RenderOptions</code> type:</p>
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||
<h4 class="rp-toc-include" id="wrapper-option"><a href="#wrapper-option" class="rp-header-anchor rp-link" aria-hidden="true">#</a><code>wrapper</code> option</h4>
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||
<div class="rp-codeblock language-ts"><div class="rp-codeblock__content"><div class="rp-codeblock__content__scroll-container rp-scrollbar rp-scrollbar--always"><pre class="shiki css-variables" style="background-color:var(--shiki-background);color:var(--shiki-foreground)" tabindex="0" data-lang="ts"><code><span class="line"><span style="color:var(--shiki-foreground)">wrapper</span><span style="color:var(--shiki-token-keyword)">?:</span><span style="color:var(--shiki-token-constant)"> React</span><span style="color:var(--shiki-foreground)">.ComponentType</span><span style="color:var(--shiki-token-keyword)"><</span><span style="color:var(--shiki-foreground)">any</span><span style="color:var(--shiki-token-keyword)">></span><span style="color:var(--shiki-token-punctuation)">,</span></span></code></pre></div><div class="rp-code-button-group"><button class="rp-code-button-group__button rp-code-wrap-button" title="Toggle code wrap"><svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" class="rp-code-button-group__icon rp-code-button-group__icon--wrapped"><path fill="currentColor" d="M21 5H3v2h18zM3 19h7v-2H3zm0-6h15c1 0 2 .43 2 2s-1 2-2 2h-2v-2l-4 3 4 3v-2h2c2.95 0 4-1.27 4-4 0-2.72-1-4-4-4H3z"></path></svg><svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" class="rp-code-button-group__icon rp-code-button-group__icon--wrap"><path fill="currentColor" d="M16 7H3V5h13zM3 19h13v-2H3zm19-7-4-3v2H3v2h15v2z"></path></svg></button><button class="rp-code-button-group__button rp-code-copy-button" title="Copy code"><svg xmlns="http://www.w3.org/2000/svg" width="272" height="272" viewBox="0 0 272 272" class="rp-code-button-group__icon rp-code-copy-button__icon rp-code-copy-button__icon--copy"><path fill="currentColor" fill-rule="evenodd" d="M45.883 23.368h123.823v22.514H68.396v146.336H45.883zm45.026 45.027H225.99v180.107H90.91zm22.514 22.513v135.08h90.053V90.908z" clip-rule="evenodd"></path></svg><svg xmlns="http://www.w3.org/2000/svg" width="271" height="271" viewBox="0 0 271 271" class="rp-code-button-group__icon rp-code-copy-button__icon rp-code-copy-button__icon--success"><path fill="currentColor" d="M112.687 203.223H90.174v-22.514h22.512v-22.514h22.512v22.514h-22.511zm-22.514-22.514H67.66v-22.514h22.513zm-22.514-22.514H45.146v-22.512H67.66zm90.054 0h-22.514v-22.512h22.514zm22.514-22.512h-22.514v-22.514h22.514zm22.513-22.514h-22.513V90.655h22.513zm22.514-22.514H202.74V68.143h22.514z"></path></svg></button></div></div></div>
|
||
<p>This option allows you to wrap the tested component, passed as the first option to the <code>render()</code> function, in an additional wrapper component. This is useful for creating reusable custom render functions for common React Context providers.</p>
|
||
<h4 class="rp-toc-include" id="concurrent-root"><a href="#concurrent-root" class="rp-header-anchor rp-link" aria-hidden="true">#</a><code>concurrentRoot</code> option</h4>
|
||
<p>Set to <code>true</code> to enable concurrent rendering used in the React Native New Architecture. Otherwise <code>render</code> will default to legacy synchronous rendering.</p>
|
||
<h4 class="rp-toc-include" id="createnodemock-option"><a href="#createnodemock-option" class="rp-header-anchor rp-link" aria-hidden="true">#</a><code>createNodeMock</code> option</h4>
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<div class="rp-codeblock language-ts"><div class="rp-codeblock__content"><div class="rp-codeblock__content__scroll-container rp-scrollbar rp-scrollbar--always"><pre class="shiki css-variables" style="background-color:var(--shiki-background);color:var(--shiki-foreground)" tabindex="0" data-lang="ts"><code><span class="line"><span style="color:var(--shiki-foreground)">createNodeMock</span><span style="color:var(--shiki-token-keyword)">?:</span><span style="color:var(--shiki-foreground)"> (element</span><span style="color:var(--shiki-token-keyword)">:</span><span style="color:var(--shiki-token-function)"> React</span><span style="color:var(--shiki-foreground)">.</span><span style="color:var(--shiki-token-function)">Element</span><span style="color:var(--shiki-foreground)">) </span><span style="color:var(--shiki-token-keyword)">=></span><span style="color:var(--shiki-foreground)"> unknown</span><span style="color:var(--shiki-token-punctuation)">,</span></span></code></pre></div><div class="rp-code-button-group"><button class="rp-code-button-group__button rp-code-wrap-button" title="Toggle code wrap"><svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" class="rp-code-button-group__icon rp-code-button-group__icon--wrapped"><path fill="currentColor" d="M21 5H3v2h18zM3 19h7v-2H3zm0-6h15c1 0 2 .43 2 2s-1 2-2 2h-2v-2l-4 3 4 3v-2h2c2.95 0 4-1.27 4-4 0-2.72-1-4-4-4H3z"></path></svg><svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" class="rp-code-button-group__icon rp-code-button-group__icon--wrap"><path fill="currentColor" d="M16 7H3V5h13zM3 19h13v-2H3zm19-7-4-3v2H3v2h15v2z"></path></svg></button><button class="rp-code-button-group__button rp-code-copy-button" title="Copy code"><svg xmlns="http://www.w3.org/2000/svg" width="272" height="272" viewBox="0 0 272 272" class="rp-code-button-group__icon rp-code-copy-button__icon rp-code-copy-button__icon--copy"><path fill="currentColor" fill-rule="evenodd" d="M45.883 23.368h123.823v22.514H68.396v146.336H45.883zm45.026 45.027H225.99v180.107H90.91zm22.514 22.513v135.08h90.053V90.908z" clip-rule="evenodd"></path></svg><svg xmlns="http://www.w3.org/2000/svg" width="271" height="271" viewBox="0 0 271 271" class="rp-code-button-group__icon rp-code-copy-button__icon rp-code-copy-button__icon--success"><path fill="currentColor" d="M112.687 203.223H90.174v-22.514h22.512v-22.514h22.512v22.514h-22.511zm-22.514-22.514H67.66v-22.514h22.513zm-22.514-22.514H45.146v-22.512H67.66zm90.054 0h-22.514v-22.512h22.514zm22.514-22.512h-22.514v-22.514h22.514zm22.513-22.514h-22.513V90.655h22.513zm22.514-22.514H202.74V68.143h22.514z"></path></svg></button></div></div></div>
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<p>This option allows you to pass <code>createNodeMock</code> option to <code>ReactTestRenderer.create()</code> method in order to allow for custom mock refs. You can learn more about this option from <a href="https://reactjs.org/docs/test-renderer.html#ideas" target="_blank" rel="noopener noreferrer" class="rp-link">React Test Renderer documentation</a>.</p>
|
||
<h4 class="rp-toc-include" id="unstable_validatestringsrenderedwithintext-option"><a href="#unstable_validatestringsrenderedwithintext-option" class="rp-header-anchor rp-link" aria-hidden="true">#</a><code>unstable_validateStringsRenderedWithinText</code> option</h4>
|
||
<div class="rp-codeblock language-ts"><div class="rp-codeblock__content"><div class="rp-codeblock__content__scroll-container rp-scrollbar rp-scrollbar--always"><pre class="shiki css-variables" style="background-color:var(--shiki-background);color:var(--shiki-foreground)" tabindex="0" data-lang="ts"><code><span class="line"><span style="color:var(--shiki-foreground)">unstable_validateStringsRenderedWithinText</span><span style="color:var(--shiki-token-keyword)">?:</span><span style="color:var(--shiki-foreground)"> boolean;</span></span></code></pre></div><div class="rp-code-button-group"><button class="rp-code-button-group__button rp-code-wrap-button" title="Toggle code wrap"><svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" class="rp-code-button-group__icon rp-code-button-group__icon--wrapped"><path fill="currentColor" d="M21 5H3v2h18zM3 19h7v-2H3zm0-6h15c1 0 2 .43 2 2s-1 2-2 2h-2v-2l-4 3 4 3v-2h2c2.95 0 4-1.27 4-4 0-2.72-1-4-4-4H3z"></path></svg><svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" class="rp-code-button-group__icon rp-code-button-group__icon--wrap"><path fill="currentColor" d="M16 7H3V5h13zM3 19h13v-2H3zm19-7-4-3v2H3v2h15v2z"></path></svg></button><button class="rp-code-button-group__button rp-code-copy-button" title="Copy code"><svg xmlns="http://www.w3.org/2000/svg" width="272" height="272" viewBox="0 0 272 272" class="rp-code-button-group__icon rp-code-copy-button__icon rp-code-copy-button__icon--copy"><path fill="currentColor" fill-rule="evenodd" d="M45.883 23.368h123.823v22.514H68.396v146.336H45.883zm45.026 45.027H225.99v180.107H90.91zm22.514 22.513v135.08h90.053V90.908z" clip-rule="evenodd"></path></svg><svg xmlns="http://www.w3.org/2000/svg" width="271" height="271" viewBox="0 0 271 271" class="rp-code-button-group__icon rp-code-copy-button__icon rp-code-copy-button__icon--success"><path fill="currentColor" d="M112.687 203.223H90.174v-22.514h22.512v-22.514h22.512v22.514h-22.511zm-22.514-22.514H67.66v-22.514h22.513zm-22.514-22.514H45.146v-22.512H67.66zm90.054 0h-22.514v-22.512h22.514zm22.514-22.512h-22.514v-22.514h22.514zm22.513-22.514h-22.513V90.655h22.513zm22.514-22.514H202.74V68.143h22.514z"></path></svg></button></div></div></div>
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<div class="rp-callout rp-callout--note"><div class="rp-callout__title">Note</div><div class="rp-callout__content"><p>
|
||
This options is experimental, in some cases it might not work as intended, and its behavior might change without observing <a href="https://semver.org/" target="_blank" rel="noopener noreferrer" class="rp-link">SemVer</a> requirements for breaking changes.</p></div></div>
|
||
<p>This <strong>experimental</strong> option allows you to replicate React Native behavior of throwing <code>Invariant Violation: Text strings must be rendered within a <Text> component</code> error when you try to render <code>string</code> value under components different than <code><Text></code>, e.g., under <code><View></code>.</p>
|
||
<p>React Test Renderer does not enforce this check; hence, by default, React Native Testing Library also does not check this. That might result in runtime errors when running your code on a device, while the code works without errors in tests.</p>
|
||
<h3 class="rp-toc-include" id="render-result"><a href="#render-result" class="rp-header-anchor rp-link" aria-hidden="true">#</a>Result</h3>
|
||
<p>The <code>render</code> function returns the same queries and utilities as the <a href="/react-native-testing-library/12.x/docs/api/screen" class="rp-link"><code>screen</code></a> object. We recommended using the <code>screen</code> object as more developer-friendly way.</p>
|
||
<p>See <a href="https://kentcdodds.com/blog/common-mistakes-with-react-testing-library#not-using-screen" target="_blank" rel="noopener noreferrer" class="rp-link">this article</a> from Kent C. Dodds for more details.</p><!--/$--></div><div class="container-uhcWmO"><img class="logo-IwzwG8" src="/react-native-testing-library/static/image/abstract-atom.4eca0300ff.avif" alt="Abstract Logo" aria-hidden="true"/><div class="content-uJxcIj"><div class="headlineContainer-NHNT4y"><h1 class="headline-iCUUUl">Need React or React Native
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expertise you can count on?</h1></div><div class="buttonContainer-wOj8Y6"><div class="dark"><a href="https://www.callstack.com/contact" class="button-DogSnd brand-rT2ahT ">Let's talk<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="none" viewBox="0 0 16 16" class="button-icon-Okk0hT" aria-hidden="true" focusable="false"><path fill="currentColor" d="M9.333 13.333h1.334V12H9.333zm-6.666-2.666h8V12H12v-1.333h1.333V9.333H12V8h-1.333v1.333H4V2.667H2.667zM9.333 8h1.334V6.667H9.333z"></path></svg></a></div></div></div></div><footer class="rp-doc-footer"><div class="rp-doc-footer__edit"></div><div class="rp-doc-footer__divider"></div><div class="container-aZLxg0"><a href="/react-native-testing-library/12.x/docs/start/quick-start" class="pagerLink-_WIlZJ rp-link"><span class="iconBox-AUO0Le"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" fill="currentColor" viewBox="0 0 24 24" class="icon-WRLCnG"><path d="M4 20h2V4H4zm8-5v2h2v-2zm-2-4H8v2h2v2h2v-2h8v-2h-8V9h-2zm2-2h2V7h-2z"></path></svg></span><span class="textWrap-lmdyLc"><span class="desc-sp3vRh">Previous page</span><span class="title-hrit_i">Quick Start</span></span></a><a href="/react-native-testing-library/12.x/docs/api/screen" class="pagerLink-_WIlZJ next-axkYXz rp-link"><span class="textWrap-lmdyLc"><span class="desc-sp3vRh">Next page</span><span class="title-hrit_i">Screen object</span></span><span class="iconBox-AUO0Le"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" fill="currentColor" viewBox="0 0 24 24" class="icon-WRLCnG"><path d="M20 20h-2V4h2zm-8-5v2h-2v-2zm2-4h2v2h-2v2h-2v-2H4v-2h8V9h2zm-2-2h-2V7h2z"></path></svg></span></a></div></footer></main></div><aside class="rp-doc-layout__outline rp-scrollbar"><div class="rp-outline"><div class="rp-outline__title">Contents<svg width="14" height="14" class="rp-progress-circle"><circle cx="7" cy="7" r="6" stroke-linecap="round" fill="none" stroke="var(--rp-c-divider-light)" stroke-width="2"></circle><circle cx="7" cy="7" r="6" stroke-linecap="round" fill="none" stroke="var(--rp-c-brand)" stroke-width="2" stroke-dasharray="37.69911184307752" stroke-dashoffset="37.69911184307752" transform="rotate(-90 7 7)" style="transition:stroke-dashoffset 0.3s"></circle></svg></div><nav class="rp-outline__toc rp-scrollbar"><a href="#render-options" class="rp-toc-item rp-link" title="Options" style="padding-left:12px" data-depth="1"><span class="rp-toc-item__text rp-doc">Options</span></a><a href="#wrapper-option" class="rp-toc-item rp-link" title="wrapper option" style="padding-left:24px" data-depth="2"><span class="rp-toc-item__text rp-doc"><code>wrapper</code> option</span></a><a href="#concurrent-root" class="rp-toc-item rp-link" title="concurrentRoot option" style="padding-left:24px" data-depth="2"><span class="rp-toc-item__text rp-doc"><code>concurrentRoot</code> option</span></a><a href="#createnodemock-option" class="rp-toc-item rp-link" title="createNodeMock option" style="padding-left:24px" data-depth="2"><span class="rp-toc-item__text rp-doc"><code>createNodeMock</code> option</span></a><a href="#unstable_validatestringsrenderedwithintext-option" class="rp-toc-item rp-link" title="unstable_validateStringsRenderedWithinText option" style="padding-left:24px" data-depth="2"><span class="rp-toc-item__text rp-doc"><code>unstable_validateStringsRenderedWithinText</code> option</span></a><a href="#render-result" class="rp-toc-item rp-link" title="Result" style="padding-left:12px" data-depth="1"><span class="rp-toc-item__text rp-doc">Result</span></a></nav><div class="rp-outline__divider"></div><div class="rp-outline__bottom"></div></div><div class="rp-outline__divider"></div><div class="container-LzbylO"><div><div class="headline-y75_LS">Need help with React or React Native projects?</div><div class="description-muYVs3">We support teams building scalable apps with React and React Native.</div></div><a href="https://www.callstack.com/contact" class="button-DogSnd brand-rT2ahT ">Let's talk<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="none" viewBox="0 0 16 16" class="button-icon-Okk0hT" aria-hidden="true" focusable="false"><path fill="currentColor" d="M9.333 13.333h1.334V12H9.333zm-6.666-2.666h8V12H12v-1.333h1.333V9.333H12V8h-1.333v1.333H4V2.667H2.667zM9.333 8h1.334V6.667H9.333z"></path></svg></a></div></aside></div></div>
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