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<title data-rh="true">React Navigation | React Native Testing Library</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:image" content="https://callstack.github.io/react-native-testing-library/img/owl.png"><meta data-rh="true" name="twitter:image" content="https://callstack.github.io/react-native-testing-library/img/owl.png"><meta data-rh="true" property="og:url" content="https://callstack.github.io/react-native-testing-library/docs/react-navigation"><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="React Navigation | React Native Testing Library"><meta data-rh="true" name="description" content="This section deals with integrating @testing-library/react-native with react-navigation, using Jest."><meta data-rh="true" property="og:description" content="This section deals with integrating @testing-library/react-native with react-navigation, using Jest."><link data-rh="true" rel="icon" href="/react-native-testing-library/img/owl.png"><link data-rh="true" rel="canonical" href="https://callstack.github.io/react-native-testing-library/docs/react-navigation"><link data-rh="true" rel="alternate" href="https://callstack.github.io/react-native-testing-library/docs/react-navigation" hreflang="en"><link data-rh="true" rel="alternate" href="https://callstack.github.io/react-native-testing-library/docs/react-navigation" hreflang="x-default"><link data-rh="true" rel="preconnect" href="https://6CJ0BV6AVN-dsn.algolia.net" crossorigin="anonymous"><link rel="search" type="application/opensearchdescription+xml" title="React Native Testing Library" href="/react-native-testing-library/opensearch.xml"><link rel="stylesheet" href="/react-native-testing-library/assets/css/styles.a2c05d0c.css">
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class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item"><div class="menu__list-item-collapsible"><a class="menu__link">Migrations</a></div><ul style="display:block;overflow:visible;height:auto" class="menu__list"><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/react-native-testing-library/docs/migration-v12">Migration to 12.0</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/react-native-testing-library/docs/migration-v11">Migration to 11.0</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/react-native-testing-library/docs/migration-v9">Migration to 9.0</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/react-native-testing-library/docs/migration-v7">Migration to 7.0</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/react-native-testing-library/docs/migration-v2">Migration to 2.0</a></li></ul></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--active">Examples</a></div><ul style="display:block;overflow:visible;height:auto" class="menu__list"><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link menu__link--active" aria-current="page" tabindex="0" href="/react-native-testing-library/docs/react-navigation">React Navigation</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/react-native-testing-library/docs/redux-integration">Redux Integration</a></li></ul></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/react-native-testing-library/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_YNFT"><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">Examples</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">React Navigation</span><meta itemprop="position" content="2"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>React Navigation</h1></header><p>This section deals with integrating <code>@testing-library/react-native</code> with <code>react-navigation</code>, using Jest.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="stack-navigator">Stack Navigator<a href="#stack-navigator" class="hash-link" aria-label="Direct link to Stack Navigator" title="Direct link to Stack Navigator"></a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="setting-up">Setting up<a href="#setting-up" class="hash-link" aria-label="Direct link to Setting up" title="Direct link to Setting up"></a></h3><p>Install the packages required for React Navigation. For this example, we will use a <a href="https://reactnavigation.org/docs/stack-navigator/" target="_blank" rel="noopener noreferrer">stack navigator</a> to transition to the second page when any of the items are clicked on.</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ yarn add @react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">native</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">community</span><span class="token operator" style="color:#393A34">/</span><span class="token plain">masked</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">view @react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">navigation</span><span class="token operator" style="color:#393A34">/</span><span class="token plain">native @react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">navigation</span><span class="token operator" style="color:#393A34">/</span><span class="token plain">stack react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">native</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">gesture</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">handler react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">native</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">reanimated react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">native</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">safe</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">area</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">context react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">native</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">screens</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Create an <a href="https://github.com/callstack/react-native-testing-library/blob/main/examples/reactnavigation/src/AppNavigator.js" target="_blank" rel="noopener noreferrer"><code>./AppNavigator.js</code></a> component which will list the navigation stack:</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'react-native-gesture-handler'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports operator" style="color:#393A34">*</span><span class="token imports"> </span><span class="token imports keyword module" style="color:#00009f">as</span><span class="token imports"> </span><span class="token imports maybe-class-name">React</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'react'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports punctuation" style="color:#393A34">{</span><span class="token imports"> createStackNavigator </span><span class="token imports punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'@react-navigation/stack'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports maybe-class-name">HomeScreen</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'./screens/HomeScreen'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports maybe-class-name">DetailsScreen</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'./screens/DetailsScreen'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> </span><span class="token maybe-class-name">Screen</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token maybe-class-name">Navigator</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token function" style="color:#d73a49">createStackNavigator</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">export</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">default</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">function</span><span class="token plain"> </span><span class="token function maybe-class-name" style="color:#d73a49">Navigation</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> options </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">return</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">Navigator</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">Screen</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">name</span><span class="token tag attr-value punctuation attr-equals" style="color:#393A34">=</span><span class="token tag attr-value punctuation" style="color:#393A34">"</span><span class="token tag attr-value" style="color:#e3116c">Home</span><span class="token tag attr-value punctuation" style="color:#393A34">"</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">component</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript maybe-class-name" style="color:#00009f">HomeScreen</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag" style="color:#00009f"> </span><span class="token tag punctuation" style="color:#393A34">/></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">Screen</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">options</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript" style="color:#00009f">options</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">name</span><span class="token tag attr-value punctuation attr-equals" style="color:#393A34">=</span><span class="token tag attr-value punctuation" style="color:#393A34">"</span><span class="token tag attr-value" style="color:#e3116c">Details</span><span class="token tag attr-value punctuation" style="color:#393A34">"</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">component</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript maybe-class-name" style="color:#00009f">DetailsScreen</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag" style="color:#00009f"> </span><span class="token tag punctuation" style="color:#393A34">/></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">Navigator</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Create your two screens which we will transition to and from them. The homescreen, found in <a href="https://github.com/callstack/react-native-testing-library/blob/main/examples/reactnavigation/src/screens/HomeScreen.js" target="_blank" rel="noopener noreferrer"><code>./screens/HomeScreen.js</code></a>, contains a list of elements presented in a list view. On tap of any of these items will move to the details screen with the item number:</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports operator" style="color:#393A34">*</span><span class="token imports"> </span><span class="token imports keyword module" style="color:#00009f">as</span><span class="token imports"> </span><span class="token imports maybe-class-name">React</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'react'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports punctuation" style="color:#393A34">{</span><span class="token imports"></span><br></span><span class="token-line" style="color:#393A34"><span class="token imports"> </span><span class="token imports maybe-class-name">Text</span><span class="token imports punctuation" style="color:#393A34">,</span><span class="token imports"></span><br></span><span class="token-line" style="color:#393A34"><span class="token imports"> </span><span class="token imports maybe-class-name">View</span><span class="token imports punctuation" style="color:#393A34">,</span><span class="token imports"></span><br></span><span class="token-line" style="color:#393A34"><span class="token imports"> </span><span class="token imports maybe-class-name">FlatList</span><span class="token imports punctuation" style="color:#393A34">,</span><span class="token imports"></span><br></span><span class="token-line" style="color:#393A34"><span class="token imports"> </span><span class="token imports maybe-class-name">TouchableOpacity</span><span class="token imports punctuation" style="color:#393A34">,</span><span class="token imports"></span><br></span><span class="token-line" style="color:#393A34"><span class="token imports"> </span><span class="token imports maybe-class-name">StyleSheet</span><span class="token imports punctuation" style="color:#393A34">,</span><span class="token imports"></span><br></span><span class="token-line" style="color:#393A34"><span class="token imports"></span><span class="token imports punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'react-native'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">export</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">default</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">function</span><span class="token plain"> </span><span class="token function maybe-class-name" style="color:#d73a49">HomeScreen</span><span class="token punctuation" style="color:#393A34">(</span><span class="token parameter punctuation" style="color:#393A34">{</span><span class="token parameter"> navigation </span><span class="token parameter punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">[</span><span class="token plain">items</span><span class="token punctuation" style="color:#393A34">]</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token maybe-class-name">React</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">useState</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">new</span><span class="token plain"> </span><span class="token class-name">Array</span><span class="token punctuation" style="color:#393A34">(</span><span class="token number" style="color:#36acaa">20</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">fill</span><span class="token punctuation" style="color:#393A34">(</span><span class="token keyword null nil" style="color:#00009f">null</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">map</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">(</span><span class="token parameter">_</span><span class="token parameter punctuation" style="color:#393A34">,</span><span class="token parameter"> idx</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token arrow operator" style="color:#393A34">=></span><span class="token plain"> idx </span><span class="token operator" style="color:#393A34">+</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">1</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> </span><span class="token function-variable function" style="color:#d73a49">onOpacityPress</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token parameter">item</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token arrow operator" style="color:#393A34">=></span><span class="token plain"> navigation</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">navigate</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'Details'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> item</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">return</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">View</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">Text</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">style</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript" style="color:#00009f">styles</span><span class="token tag script language-javascript punctuation" style="color:#393A34">.</span><span class="token tag script language-javascript property-access" style="color:#00009f">header</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text">List of numbers from 1 to 20</span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">Text</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">FlatList</span><span class="token tag" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">keyExtractor</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript punctuation" style="color:#393A34">(</span><span class="token tag script language-javascript parameter" style="color:#00009f">_</span><span class="token tag script language-javascript parameter punctuation" style="color:#393A34">,</span><span class="token tag script language-javascript parameter" style="color:#00009f"> idx</span><span class="token tag script language-javascript punctuation" style="color:#393A34">)</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript arrow operator" style="color:#393A34">=></span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript template-string template-punctuation string" style="color:#e3116c">`</span><span class="token tag script language-javascript template-string interpolation interpolation-punctuation punctuation" style="color:#393A34">${</span><span class="token tag script language-javascript template-string interpolation" style="color:#00009f">idx</span><span class="token tag script language-javascript template-string interpolation interpolation-punctuation punctuation" style="color:#393A34">}</span><span class="token tag script language-javascript template-string template-punctuation string" style="color:#e3116c">`</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">data</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript" style="color:#00009f">items</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">renderItem</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript punctuation" style="color:#393A34">(</span><span class="token tag script language-javascript parameter punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript parameter" style="color:#00009f"> item </span><span class="token tag script language-javascript parameter punctuation" style="color:#393A34">}</span><span class="token tag script language-javascript punctuation" style="color:#393A34">)</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript arrow operator" style="color:#393A34">=></span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript punctuation" style="color:#393A34">(</span><span class="token tag script language-javascript" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript tag punctuation" style="color:#393A34"><</span><span class="token tag script language-javascript tag class-name" style="color:#00009f">TouchableOpacity</span><span class="token tag script language-javascript tag" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript tag" style="color:#00009f"> </span><span class="token tag script language-javascript tag attr-name" style="color:#00a4db">onPress</span><span class="token tag script language-javascript tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript tag script language-javascript punctuation" style="color:#393A34">(</span><span class="token tag script language-javascript tag script language-javascript punctuation" style="color:#393A34">)</span><span class="token tag script language-javascript tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript tag script language-javascript arrow operator" style="color:#393A34">=></span><span class="token tag script language-javascript tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript tag script language-javascript function" style="color:#d73a49">onOpacityPress</span><span class="token tag script language-javascript tag script language-javascript punctuation" style="color:#393A34">(</span><span class="token tag script language-javascript tag script language-javascript" style="color:#00009f">item</span><span class="token tag script language-javascript tag script language-javascript punctuation" style="color:#393A34">)</span><span class="token tag script language-javascript tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag script language-javascript tag" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript tag" style="color:#00009f"> </span><span class="token tag script language-javascript tag attr-name" style="color:#00a4db">style</span><span class="token tag script language-javascript tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript tag script language-javascript" style="color:#00009f">styles</span><span class="token tag script language-javascript tag script language-javascript punctuation" style="color:#393A34">.</span><span class="token tag script language-javascript tag script language-javascript property-access" style="color:#00009f">row</span><span class="token tag script language-javascript tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag script language-javascript tag" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript tag" style="color:#00009f"> </span><span class="token tag script language-javascript tag punctuation" style="color:#393A34">></span><span class="token tag script language-javascript plain-text" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript plain-text" style="color:#00009f"> </span><span class="token tag script language-javascript tag punctuation" style="color:#393A34"><</span><span class="token tag script language-javascript tag class-name" style="color:#00009f">Text</span><span class="token tag script language-javascript tag punctuation" style="color:#393A34">></span><span class="token tag script language-javascript plain-text" style="color:#00009f">Item number </span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript" style="color:#00009f">item</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag script language-javascript tag punctuation" style="color:#393A34"></</span><span class="token tag script language-javascript tag class-name" style="color:#00009f">Text</span><span class="token tag script language-javascript tag punctuation" style="color:#393A34">></span><span class="token tag script language-javascript plain-text" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript plain-text" style="color:#00009f"> </span><span class="token tag script language-javascript tag punctuation" style="color:#393A34"></</span><span class="token tag script language-javascript tag class-name" style="color:#00009f">TouchableOpacity</span><span class="token tag script language-javascript tag punctuation" style="color:#393A34">></span><span class="token tag script language-javascript" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript punctuation" style="color:#393A34">)</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag" style="color:#00009f"> </span><span class="token tag punctuation" style="color:#393A34">/></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">View</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> divider </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'#DDDDDD'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> styles </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token maybe-class-name">StyleSheet</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">create</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">header</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">fontSize</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">20</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">textAlign</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'center'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">marginVertical</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">16</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">row</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">paddingVertical</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">16</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">paddingHorizontal</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">24</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">borderBottomColor</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> divider</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">borderBottomWidth</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">1</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The details screen, found in <a href="https://github.com/callstack/react-native-testing-library/blob/main/examples/reactnavigation/src/screens/DetailsScreen.js" target="_blank" rel="noopener noreferrer"><code>./screens/DetailsScreen.js</code></a>, contains a header with the item number passed from the home screen:</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token comment" style="color:#999988;font-style:italic">// ./screens/DetailsScreen.js</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports operator" style="color:#393A34">*</span><span class="token imports"> </span><span class="token imports keyword module" style="color:#00009f">as</span><span class="token imports"> </span><span class="token imports maybe-class-name">React</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'react'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports punctuation" style="color:#393A34">{</span><span class="token imports"> </span><span class="token imports maybe-class-name">Text</span><span class="token imports punctuation" style="color:#393A34">,</span><span class="token imports"> </span><span class="token imports maybe-class-name">StyleSheet</span><span class="token imports punctuation" style="color:#393A34">,</span><span class="token imports"> </span><span class="token imports maybe-class-name">View</span><span class="token imports"> </span><span class="token imports punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'react-native'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">export</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">default</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">function</span><span class="token plain"> </span><span class="token function maybe-class-name" style="color:#d73a49">DetailsScreen</span><span class="token punctuation" style="color:#393A34">(</span><span class="token parameter">props</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> item </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token known-class-name class-name">Number</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">parseInt</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">props</span><span class="token punctuation" style="color:#393A34">.</span><span class="token property-access">route</span><span class="token punctuation" style="color:#393A34">.</span><span class="token property-access">params</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">10</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">return</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">View</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">Text</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">style</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript" style="color:#00009f">styles</span><span class="token tag script language-javascript punctuation" style="color:#393A34">.</span><span class="token tag script language-javascript property-access" style="color:#00009f">header</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text">Showing details for </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain">item</span><span class="token punctuation" style="color:#393A34">}</span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">Text</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">Text</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">style</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript" style="color:#00009f">styles</span><span class="token tag script language-javascript punctuation" style="color:#393A34">.</span><span class="token tag script language-javascript property-access" style="color:#00009f">body</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text">the number you have chosen is </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain">item</span><span class="token punctuation" style="color:#393A34">}</span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">Text</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">View</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> styles </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token maybe-class-name">StyleSheet</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">create</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">header</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">fontSize</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">20</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">textAlign</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'center'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">marginVertical</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">16</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">body</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">textAlign</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'center'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="setting-up-the-test-environment">Setting up the test environment<a href="#setting-up-the-test-environment" class="hash-link" aria-label="Direct link to Setting up the test environment" title="Direct link to Setting up the test environment"></a></h3><p>Install required dev dependencies:</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ yarn add </span><span class="token operator" style="color:#393A34">-</span><span class="token constant" style="color:#36acaa">D</span><span class="token plain"> jest @testing</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">library</span><span class="token operator" style="color:#393A34">/</span><span class="token plain">react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">native</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Create your <code>jest.config.js</code> file (or place the following properties in your <code>package.json</code> as a "jest" property)</p><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">module</span><span class="token punctuation" style="color:#393A34">.</span><span class="token property-access">exports</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">preset</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'react-native'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">setupFiles</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">[</span><span class="token string" style="color:#e3116c">'./node_modules/react-native-gesture-handler/jestSetup.js'</span><span class="token punctuation" style="color:#393A34">]</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">transformIgnorePatterns</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">[</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token string" style="color:#e3116c">'node_modules/(?!(jest-)?@?react-native|@react-native-community|@react-navigation)'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token comment" style="color:#999988;font-style:italic">// For pnpm you need to use inlcude `(?!(?:.pnpm/)?` part like this:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token comment" style="color:#999988;font-style:italic">// 'node_modules/(?!(?:.pnpm/)?((jest-)?@?react-native|@react-native-community|@react-navigation))',</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">]</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Notice the 2 entries that don't come with the default React Native project:</p><ul><li><code>setupFiles</code> – an array of files that Jest is going to execute before running your tests. In this case, we run <code>react-native-gesture-handler/jestSetup.js</code> which sets up necessary mocks for <code>react-native-gesture-handler</code> native module</li><li><code>transformIgnorePatterns</code> – an array of paths that Jest ignores when transforming code. In this case, the negative lookahead regular expression is used, to tell Jest to transform (with Babel) every package inside <code>node_modules/</code> that starts with <code>react-native</code>, <code>@react-native-community</code> or <code>@react-navigation</code> (added by us, the rest is in <code>react-native</code> preset by default, so you don't have to worry about it).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="example-tests">Example tests<a href="#example-tests" class="hash-link" aria-label="Direct link to Example tests" title="Direct link to Example tests"></a></h3><p>For this example, we are going to test out two things. The first thing is that the page is laid out as expected. The second, and most important, is that the page will transition to the detail screen when any item is tapped on.</p><p>Let's add a <a href="https://github.com/callstack/react-native-testing-library/blob/main/examples/reactnavigation/src/__tests__/AppNavigator.js" target="_blank" rel="noopener noreferrer"><code>AppNavigator.test.js</code></a> file in <code>src/__tests__</code> directory:</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports operator" style="color:#393A34">*</span><span class="token imports"> </span><span class="token imports keyword module" style="color:#00009f">as</span><span class="token imports"> </span><span class="token imports maybe-class-name">React</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'react'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports punctuation" style="color:#393A34">{</span><span class="token imports"> </span><span class="token imports maybe-class-name">NavigationContainer</span><span class="token imports"> </span><span class="token imports punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'@react-navigation/native'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports punctuation" style="color:#393A34">{</span><span class="token imports"> render</span><span class="token imports punctuation" style="color:#393A34">,</span><span class="token imports"> screen</span><span class="token imports punctuation" style="color:#393A34">,</span><span class="token imports"> fireEvent </span><span class="token imports punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'@testing-library/react-native'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports maybe-class-name">AppNavigator</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'../AppNavigator'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// Silence the warning https://github.com/facebook/react-native/issues/11094#issuecomment-263240420</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// Use with React Native <= 0.63</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">jest</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">mock</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'react-native/Libraries/Animated/src/NativeAnimatedHelper'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// Use this instead with React Native >= 0.64</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// jest.mock('react-native/Libraries/Animated/NativeAnimatedHelper');</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token function" style="color:#d73a49">describe</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'Testing react navigation'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token arrow operator" style="color:#393A34">=></span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">test</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'page contains the header and 10 items'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">async</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token arrow operator" style="color:#393A34">=></span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> component </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">NavigationContainer</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">AppNavigator</span><span class="token tag" style="color:#00009f"> </span><span class="token tag punctuation" style="color:#393A34">/></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">NavigationContainer</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">render</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">component</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> header </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> screen</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">findByText</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'List of numbers from 1 to 20'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> items </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> screen</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">findAllByText</span><span class="token punctuation" style="color:#393A34">(</span><span class="token regex regex-delimiter" style="color:#36acaa">/</span><span class="token regex regex-source language-regex" style="color:#36acaa">Item number</span><span class="token regex regex-delimiter" style="color:#36acaa">/</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">expect</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">header</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">toBeOnTheScreen</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">expect</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">items</span><span class="token punctuation" style="color:#393A34">.</span><span class="token property-access">length</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">toBe</span><span class="token punctuation" style="color:#393A34">(</span><span class="token number" style="color:#36acaa">10</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">test</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'clicking on one item takes you to the details screen'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">async</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token arrow operator" style="color:#393A34">=></span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> component </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">NavigationContainer</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">AppNavigator</span><span class="token tag" style="color:#00009f"> </span><span class="token tag punctuation" style="color:#393A34">/></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">NavigationContainer</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">render</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">component</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> toClick </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> screen</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">findByText</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'Item number 5'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">fireEvent</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">toClick</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'press'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> newHeader </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> screen</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">findByText</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'Showing details for 5'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> newBody </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> screen</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">findByText</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'the number you have chosen is 5'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">expect</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">newHeader</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">toBeOnTheScreen</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">expect</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">newBody</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">toBeOnTheScreen</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="drawer-navigator">Drawer Navigator<a href="#drawer-navigator" class="hash-link" aria-label="Direct link to Drawer Navigator" title="Direct link to Drawer Navigator"></a></h2><p>Testing the Drawer Navigation requires an additional setup step for mocking the Reanimated library.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="setting-up-1">Setting up<a href="#setting-up-1" class="hash-link" aria-label="Direct link to Setting up" title="Direct link to Setting up"></a></h3><p>Install the packages required for React Navigation. For this example, we will use a <a href="https://reactnavigation.org/docs/drawer-navigator/" target="_blank" rel="noopener noreferrer">drawer navigator</a> to transition between a home screen and an additional screen.</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ yarn add @react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">native</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">community</span><span class="token operator" style="color:#393A34">/</span><span class="token plain">masked</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">view @react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">navigation</span><span class="token operator" style="color:#393A34">/</span><span class="token plain">native @react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">navigation</span><span class="token operator" style="color:#393A34">/</span><span class="token plain">drawer react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">native</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">gesture</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">handler react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">native</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">reanimated react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">native</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">safe</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">area</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">context react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">native</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">screens</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Create a <a href="https://github.com/callstack/react-native-testing-library/blob/main/examples/reactnavigation/src/DrawerAppNavigator.js" target="_blank" rel="noopener noreferrer"><code>./DrawerAppNavigator.js</code></a> component which will list the navigation stack:</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'react-native-gesture-handler'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports maybe-class-name">React</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'react'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports punctuation" style="color:#393A34">{</span><span class="token imports"> createDrawerNavigator </span><span class="token imports punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'@react-navigation/drawer'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> </span><span class="token maybe-class-name">Screen</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token maybe-class-name">Navigator</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token function" style="color:#d73a49">createDrawerNavigator</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">export</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">default</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">function</span><span class="token plain"> </span><span class="token function maybe-class-name" style="color:#d73a49">Navigation</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">return</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">Navigator</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">Screen</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">name</span><span class="token tag attr-value punctuation attr-equals" style="color:#393A34">=</span><span class="token tag attr-value punctuation" style="color:#393A34">"</span><span class="token tag attr-value" style="color:#e3116c">Home</span><span class="token tag attr-value punctuation" style="color:#393A34">"</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">component</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript maybe-class-name" style="color:#00009f">HomeScreen</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag" style="color:#00009f"> </span><span class="token tag punctuation" style="color:#393A34">/></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">Screen</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">name</span><span class="token tag attr-value punctuation attr-equals" style="color:#393A34">=</span><span class="token tag attr-value punctuation" style="color:#393A34">"</span><span class="token tag attr-value" style="color:#e3116c">Notifications</span><span class="token tag attr-value punctuation" style="color:#393A34">"</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">component</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript maybe-class-name" style="color:#00009f">NotificationsScreen</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag" style="color:#00009f"> </span><span class="token tag punctuation" style="color:#393A34">/></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">Navigator</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Create your two screens which we will transition to and from:</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#00009f">function</span><span class="token plain"> </span><span class="token function maybe-class-name" style="color:#d73a49">HomeScreen</span><span class="token punctuation" style="color:#393A34">(</span><span class="token parameter punctuation" style="color:#393A34">{</span><span class="token parameter"> navigation </span><span class="token parameter punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">return</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">View</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">style</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript literal-property property" style="color:#36acaa">flex</span><span class="token tag script language-javascript operator" style="color:#393A34">:</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript number" style="color:#36acaa">1</span><span class="token tag script language-javascript punctuation" style="color:#393A34">,</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript literal-property property" style="color:#36acaa">alignItems</span><span class="token tag script language-javascript operator" style="color:#393A34">:</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript string" style="color:#e3116c">'center'</span><span class="token tag script language-javascript punctuation" style="color:#393A34">,</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript literal-property property" style="color:#36acaa">justifyContent</span><span class="token tag script language-javascript operator" style="color:#393A34">:</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript string" style="color:#e3116c">'center'</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">Text</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text">Welcome!</span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">Text</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">Button</span><span class="token tag" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">onPress</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript punctuation" style="color:#393A34">(</span><span class="token tag script language-javascript punctuation" style="color:#393A34">)</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript arrow operator" style="color:#393A34">=></span><span class="token tag script language-javascript" style="color:#00009f"> navigation</span><span class="token tag script language-javascript punctuation" style="color:#393A34">.</span><span class="token tag script language-javascript method function property-access" style="color:#d73a49">navigate</span><span class="token tag script language-javascript punctuation" style="color:#393A34">(</span><span class="token tag script language-javascript string" style="color:#e3116c">'Notifications'</span><span class="token tag script language-javascript punctuation" style="color:#393A34">)</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">title</span><span class="token tag attr-value punctuation attr-equals" style="color:#393A34">=</span><span class="token tag attr-value punctuation" style="color:#393A34">"</span><span class="token tag attr-value" style="color:#e3116c">Go to notifications</span><span class="token tag attr-value punctuation" style="color:#393A34">"</span><span class="token tag" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag" style="color:#00009f"> </span><span class="token tag punctuation" style="color:#393A34">/></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">View</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">function</span><span class="token plain"> </span><span class="token function maybe-class-name" style="color:#d73a49">NotificationsScreen</span><span class="token punctuation" style="color:#393A34">(</span><span class="token parameter punctuation" style="color:#393A34">{</span><span class="token parameter"> navigation </span><span class="token parameter punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">return</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">View</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">style</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript literal-property property" style="color:#36acaa">flex</span><span class="token tag script language-javascript operator" style="color:#393A34">:</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript number" style="color:#36acaa">1</span><span class="token tag script language-javascript punctuation" style="color:#393A34">,</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript literal-property property" style="color:#36acaa">alignItems</span><span class="token tag script language-javascript operator" style="color:#393A34">:</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript string" style="color:#e3116c">'center'</span><span class="token tag script language-javascript punctuation" style="color:#393A34">,</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript literal-property property" style="color:#36acaa">justifyContent</span><span class="token tag script language-javascript operator" style="color:#393A34">:</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript string" style="color:#e3116c">'center'</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">Text</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text">This is the notifications screen</span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">Text</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">Button</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">onPress</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript punctuation" style="color:#393A34">(</span><span class="token tag script language-javascript punctuation" style="color:#393A34">)</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript arrow operator" style="color:#393A34">=></span><span class="token tag script language-javascript" style="color:#00009f"> navigation</span><span class="token tag script language-javascript punctuation" style="color:#393A34">.</span><span class="token tag script language-javascript method function property-access" style="color:#d73a49">goBack</span><span class="token tag script language-javascript punctuation" style="color:#393A34">(</span><span class="token tag script language-javascript punctuation" style="color:#393A34">)</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">title</span><span class="token tag attr-value punctuation attr-equals" style="color:#393A34">=</span><span class="token tag attr-value punctuation" style="color:#393A34">"</span><span class="token tag attr-value" style="color:#e3116c">Go back home</span><span class="token tag attr-value punctuation" style="color:#393A34">"</span><span class="token tag" style="color:#00009f"> </span><span class="token tag punctuation" style="color:#393A34">/></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">View</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="setting-up-the-test-environment-1">Setting up the test environment<a href="#setting-up-the-test-environment-1" class="hash-link" aria-label="Direct link to Setting up the test environment" title="Direct link to Setting up the test environment"></a></h3><p>Install required dev dependencies:</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ yarn add </span><span class="token operator" style="color:#393A34">-</span><span class="token constant" style="color:#36acaa">D</span><span class="token plain"> jest @testing</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">library</span><span class="token operator" style="color:#393A34">/</span><span class="token plain">react</span><span class="token operator" style="color:#393A34">-</span><span class="token plain">native</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Create a <a href="https://github.com/callstack/react-native-testing-library/blob/main/examples/reactnavigation/jest-setup.js" target="_blank" rel="noopener noreferrer"><code>mock file</code></a> necessary for your tests:</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'react-native-gesture-handler/jestSetup'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">jest</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">mock</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'react-native-reanimated'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token arrow operator" style="color:#393A34">=></span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> </span><span class="token maybe-class-name">Reanimated</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token function" style="color:#d73a49">require</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'react-native-reanimated/mock'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token comment" style="color:#999988;font-style:italic">// The mock for `call` immediately calls the callback which is incorrect</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token comment" style="color:#999988;font-style:italic">// So we override it with a no-op</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token maybe-class-name">Reanimated</span><span class="token punctuation" style="color:#393A34">.</span><span class="token keyword module" style="color:#00009f">default</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method-variable function-variable method function property-access" style="color:#d73a49">call</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token arrow operator" style="color:#393A34">=></span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">return</span><span class="token plain"> </span><span class="token maybe-class-name">Reanimated</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// Silence the warning: Animated: `useNativeDriver` is not supported because the native animated module is missing</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">jest</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">mock</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'react-native/Libraries/Animated/src/NativeAnimatedHelper'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Create your <code>jest.config.js</code> file (or place the following properties in your <code>package.json</code> as a "jest" property)</p><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">module</span><span class="token punctuation" style="color:#393A34">.</span><span class="token property-access">exports</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">preset</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'react-native'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">setupFiles</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">[</span><span class="token string" style="color:#e3116c">'./jest-setup.js'</span><span class="token punctuation" style="color:#393A34">]</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">transformIgnorePatterns</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">[</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token string" style="color:#e3116c">'node_modules/(?!(jest-)?react-native|@react-native-community|@react-navigation)'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">]</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Make sure that the path to the file in <code>setupFiles</code> is correct. Jest will run these files before running your tests, so it's the best place to put your global mocks.</p><p>This setup is copied from the <a href="https://reactnavigation.org/docs/testing/" target="_blank" rel="noopener noreferrer">React Navigation documentation</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="example-tests-1">Example tests<a href="#example-tests-1" class="hash-link" aria-label="Direct link to Example tests" title="Direct link to Example tests"></a></h3><p>For this example, we are going to test out two things. The first thing is that the screen is loaded correctly. The second, and most important, is that the page will transition to the notifications screen when the button is tapped on.</p><p>Let's add a <a href="https://github.com/callstack/react-native-testing-library/blob/main/examples/reactnavigation/src/__tests__/DrawerAppNavigator.js" target="_blank" rel="noopener noreferrer"><code>DrawerAppNavigator.test.js</code></a> file in <code>src/__tests__</code> directory:</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports maybe-class-name">React</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'react'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports punctuation" style="color:#393A34">{</span><span class="token imports"> </span><span class="token imports maybe-class-name">NavigationContainer</span><span class="token imports"> </span><span class="token imports punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'@react-navigation/native'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports punctuation" style="color:#393A34">{</span><span class="token imports"> render</span><span class="token imports punctuation" style="color:#393A34">,</span><span class="token imports"> screen</span><span class="token imports punctuation" style="color:#393A34">,</span><span class="token imports"> fireEvent </span><span class="token imports punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'@testing-library/react-native'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports maybe-class-name">DrawerAppNavigator</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'../DrawerAppNavigator'</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token function" style="color:#d73a49">describe</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'Testing react navigation'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token arrow operator" style="color:#393A34">=></span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">test</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'screen contains a button linking to the notifications page'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">async</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token arrow operator" style="color:#393A34">=></span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> component </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">NavigationContainer</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">DrawerAppNavigator</span><span class="token tag" style="color:#00009f"> </span><span class="token tag punctuation" style="color:#393A34">/></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">NavigationContainer</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">render</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">component</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> button </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> screen</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">findByText</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'Go to notifications'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">expect</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">button</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">toBeOnTheScreen</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">test</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'clicking on the button takes you to the notifications screen'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">async</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token arrow operator" style="color:#393A34">=></span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> component </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">NavigationContainer</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"><</span><span class="token tag class-name" style="color:#00009f">DrawerAppNavigator</span><span class="token tag" style="color:#00009f"> </span><span class="token tag punctuation" style="color:#393A34">/></span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text"> </span><span class="token tag punctuation" style="color:#393A34"></</span><span class="token tag class-name" style="color:#00009f">NavigationContainer</span><span class="token tag punctuation" style="color:#393A34">></span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">render</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">component</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> oldScreen </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> screen</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">queryByText</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'Welcome!'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> button </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> screen</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">findByText</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'Go to notifications'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">expect</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">oldScreen</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">toBeOnTheScreen</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">fireEvent</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">button</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'press'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> newScreen </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> screen</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">findByText</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'This is the notifications screen'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token function" style="color:#d73a49">expect</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">newScreen</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">toBeOnTheScreen</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="running-tests">Running tests<a href="#running-tests" class="hash-link" aria-label="Direct link to Running tests" title="Direct link to Running tests"></a></h2><p>To run the tests, place a test script inside your <code>package.json</code></p><div class="language-json codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-json codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token property" style="color:#36acaa">"scripts"</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token property" style="color:#36acaa">"test"</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"jest"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>And run the <code>test</code> script with <code>npm test</code> or <code>yarn test</code>.</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/callstack/react-native-testing-library/blob/main/website/docs/ReactNavigation.md" 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 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