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<!doctype html><html lang="en"><head><meta charset="utf-8"><title>Check app functionality with an integration test | Flutter</title><link rel="icon" href="/assets/images/branding/flutter/icon/64.png" eleventy:ignore><link rel="apple-touch-icon" href="/assets/images/branding/flutter/logo/flutter-logomark-320px.png" eleventy:ignore><meta name="viewport" content="width=device-width,initial-scale=1"><meta name="theme-color" content="#ffffff"><link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin><meta name="google-site-verification" content="HFqxhSbf9YA_0rBglNLzDiWnrHiK_w4cqDh2YD2GEY4"><script>!function(e,t,a,n){e[n]=e[n]||[],e[n].push({"gtm.start":(new Date).getTime(),event:"gtm.js"});var 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data-target="#header-sidenav-5-1" href="#header-sidenav-5-1" role="button" aria-expanded="false" aria-controls="header-sidenav-5-1">AI</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-1"><li class="nav-item"><a class="nav-link" href="/resources/ai-overview">Overview</a></li><li class="nav-item"><a class="nav-link" href="https://ai.google.dev/gemini-api/docs/get-started/dart" target="_blank" rel="noopener">Get started with the Gemini API</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/packages/google_generative_ai" target="_blank" rel="noopener">Google AI Dart SDK (pub.dev)</a></li><li class="nav-item"><a class="nav-link" href="https://www.youtube.com/watch?v=1AuzJEiHjO4" target="_blank" rel="noopener">Build with Google AI Dart SDK (video)</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-5-2" href="#header-sidenav-5-2" role="button" aria-expanded="false" 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collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-5-3" href="#header-sidenav-5-3" role="button" aria-expanded="false" aria-controls="header-sidenav-5-3">Games</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-3"><li class="nav-item"><a class="nav-link" href="/resources/games-toolkit">Overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/games/achievements-leaderboard">Add achievements and leaderboards</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/codelabs/build-leaderboards-with-firestore#0" target="_blank" rel="noopener">Build leaderboards with Firestore</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/plugins/google-mobile-ads">Add advertising</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/games/firestore-multiplayer">Add multiplayer support</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/flutter-in-app-purchases" target="_blank" rel="noopener">Add in-app purchases</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/codelabs/firebase-auth-in-flutter-apps" target="_blank" rel="noopener">Add user authentication</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/docs/crashlytics/get-started?platform=flutter" target="_blank" rel="noopener">Debug using Crashlytics</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/flutter-flame-brick-breaker" target="_blank" rel="noopener">Intro to Flame with Flutter</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-5-4" href="#header-sidenav-5-4" role="button" aria-expanded="false" aria-controls="header-sidenav-5-4">Monetization</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-4"><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-5-4-1" href="#header-sidenav-5-4-1" role="button" aria-expanded="false" aria-controls="header-sidenav-5-4-1">Advertising</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-4-1"><li class="nav-item"><a class="nav-link" href="/resources/ads-overview">Ads overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/plugins/google-mobile-ads">Add advertising</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/admob-ads-in-flutter" target="_blank" rel="noopener">Add AdMob ads to your Flutter app</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/admob-inline-ads-in-flutter" target="_blank" rel="noopener">Add an AdMob banner and native inline ads</a></li><li class="nav-item"><a class="nav-link" 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data-toggle="collapse" data-target="#header-sidenav-5-4-3" href="#header-sidenav-5-4-3" role="button" aria-expanded="false" aria-controls="header-sidenav-5-4-3">Payments</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-4-3"><li class="nav-item"><a class="nav-link" href="/resources/payments-overview">Payments overview</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/packages/pay" target="_blank" rel="noopener">Google pay package</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-5-5" href="#header-sidenav-5-5" role="button" aria-expanded="false" aria-controls="header-sidenav-5-5">Maps</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-5"><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/google-maps-in-flutter" target="_blank" rel="noopener">Add Google maps to a Flutter app</a></li><li class="nav-item"><a class="nav-link" href="https://developers.google.com/maps/flutter-package" target="_blank" rel="noopener">Google Maps package</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-5-6" href="#header-sidenav-5-6" role="button" aria-expanded="false" aria-controls="header-sidenav-5-6">News</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-6"><li class="nav-item"><a class="nav-link" href="/resources/news-toolkit">Build a news app</a></li></ul></li></ul></li><li aria-hidden="true"><div class="sidebar-primary-divider"></div></li><li class="nav-header">User interface</li><li class="nav-item"><a class="nav-link" href="/ui">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/ui/widgets">Widget catalog</a></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-10" role="button" aria-expanded="false" aria-controls="header-sidenav-10">Layout</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-10"><li class="nav-item"><a class="nav-link" href="/ui/layout">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/ui/layout/tutorial">Build a layout</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-10-3" href="/ui/layout/lists" role="button" aria-expanded="false" aria-controls="header-sidenav-10-3">Lists & grids</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-10-3"><li class="nav-item"><a class="nav-link" href="/cookbook/lists/basic-list">Create and use lists</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/horizontal-list">Create a horizontal list</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/grid-lists">Create a grid view</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/mixed-list">Create lists with different types of items</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/spaced-items">Create lists with spaced items</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/long-lists">Work with long lists</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-10-4" href="/ui/layout/scrolling" role="button" aria-expanded="false" aria-controls="header-sidenav-10-4">Scrolling</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-10-4"><li class="nav-item"><a class="nav-link" href="/ui/layout/scrolling">Overview</a></li><li class="nav-item"><a class="nav-link" href="/ui/layout/scrolling/slivers">Use slivers to achieve fancy scrolling</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/floating-app-bar">Place a floating app bar above a list</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/effects/parallax-scrolling">Create a scrolling parallax effect</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-11" role="button" aria-expanded="false" aria-controls="header-sidenav-11">Adaptive & responsive design</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-11"><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive">Overview</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/general">General approach</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/safearea-mediaquery">SafeArea & MediaQuery</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/large-screens">Large screens & foldables</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/input">User input & accessibility</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/capabilities">Capabilities & policies</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/best-practices">Best practices</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/more-info">Additional resources</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-12" role="button" aria-expanded="false" aria-controls="header-sidenav-12">Design & theming</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-12"><li class="nav-item"><a class="nav-link" href="/cookbook/design/themes">Share styles with themes</a></li><li class="nav-item"><a class="nav-link" href="/ui/design/material">Material design</a></li><li class="nav-item"><a class="nav-link" href="/release/breaking-changes/material-3-migration">Migrate to Material 3</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-12-4" href="/ui/design/text" role="button" aria-expanded="false" aria-controls="header-sidenav-12-4">Text</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-12-4"><li class="nav-item"><a class="nav-link" href="/ui/design/text/typography">Fonts & typography</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/fonts">Use a custom font</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/package-fonts">Export fonts from a package</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/packages/google_fonts" target="_blank" rel="noopener">Google Fonts package</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-12-5" href="/ui/design/graphics" role="button" aria-expanded="false" aria-controls="header-sidenav-12-5">Custom graphics</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-12-5"><li class="nav-item"><a class="nav-link" href="/ui/design/graphics/fragment-shaders">Use custom fragment shaders</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-13" role="button" aria-expanded="false" aria-controls="header-sidenav-13">Interactivity</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-13"><li class="nav-item"><a class="nav-link" href="/ui/interactivity">Add interactivity to your app</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-13-2" href="/ui/interactivity/gestures" role="button" aria-expanded="false" aria-controls="header-sidenav-13-2">Gestures</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-13-2"><li class="nav-item"><a class="nav-link" href="/ui/interactivity/gestures">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/gestures/handling-taps">Handle taps</a></li><li class="nav-item"><a class="nav-link" href="/ui/interactivity/gestures/drag-outside">Drag an object outside an app</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/effects/drag-a-widget">Drag a UI element within an app</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/gestures/ripples">Add Material touch ripples</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/gestures/dismissible">Implement swipe to dismiss</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-13-3" href="/ui/interactivity/input" role="button" aria-expanded="false" aria-controls="header-sidenav-13-3">Input & forms</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-13-3"><li class="nav-item"><a class="nav-link" href="/cookbook/forms/text-input">Create and style a text field</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/retrieve-input">Retrieve the value of a text field</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/text-field-changes">Handle changes to a text field</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/focus">Manage focus in text fields</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/validation">Build a form with validation</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/snackbars">Display a snackbar</a></li><li class="nav-item"><a class="nav-link" href="/ui/interactivity/actions-and-shortcuts">Implement actions & shortcuts</a></li><li class="nav-item"><a class="nav-link" href="/ui/interactivity/focus">Manage keyboard focus</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-14" role="button" aria-expanded="false" aria-controls="header-sidenav-14">Assets & media</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-14"><li class="nav-item"><a class="nav-link" href="/ui/assets/assets-and-images">Add assets and images</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/images/network-image">Display images from the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/images/fading-in-images">Fade in images with a placeholder</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/plugins/play-video">Play and pause a video</a></li><li class="nav-item"><a class="nav-link" href="/ui/assets/asset-transformation">Transform assets at build time</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-15" role="button" aria-expanded="false" aria-controls="header-sidenav-15">Navigation & routing</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-15"><li class="nav-item"><a class="nav-link" href="/ui/navigation">Overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/tabs">Add tabs to your app</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/navigation-basics">Navigate to a new screen and back</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/passing-data">Send data to a new screen</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/returning-data">Return data from a screen</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/drawer">Add a drawer to a screen</a></li><li class="nav-item"><a class="nav-link" href="/ui/navigation/deep-linking">Set up deep linking</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/set-up-app-links">Set up app links for Android</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/set-up-universal-links">Set up universal links for iOS</a></li><li class="nav-item"><a class="nav-link" href="/ui/navigation/url-strategies">Configure web URL strategies</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-16" role="button" aria-expanded="false" aria-controls="header-sidenav-16">Animations & transitions</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-16"><li class="nav-item"><a class="nav-link" href="/ui/animations">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/tutorial">Tutorial</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/implicit-animations">Implicit animations</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/animated-container">Animate the properties of a container</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/opacity-animation">Fade a widget in and out</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/hero-animations">Hero animations</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/page-route-animation">Animate a page route transition</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/physics-simulation">Animate using a physics simulation</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/staggered-animations">Staggered animations</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/effects/staggered-menu-animation">Create a staggered menu animation</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/overview">API overview</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-17" role="button" aria-expanded="false" aria-controls="header-sidenav-17">Accessibility & internationalization</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-17"><li class="nav-item"><a class="nav-link" href="/ui/accessibility-and-internationalization/accessibility">Accessibility</a></li><li class="nav-item"><a class="nav-link" href="/ui/accessibility-and-internationalization/internationalization">Internationalization</a></li></ul></li><li aria-hidden="true"><div class="sidebar-primary-divider"></div></li><li class="nav-header">Beyond UI</li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-20" role="button" aria-expanded="false" aria-controls="header-sidenav-20">Data & backend</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-20"><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-20-1" href="/data-and-backend/state-mgmt" role="button" aria-expanded="false" aria-controls="header-sidenav-20-1">State management</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-20-1"><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/intro">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/declarative">Think declaratively</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/ephemeral-vs-app">Ephemeral vs app state</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/simple">Simple app state management</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/options">Options</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-20-2" href="/data-and-backend/networking" role="button" aria-expanded="false" aria-controls="header-sidenav-20-2">Networking & http</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-20-2"><li class="nav-item"><a class="nav-link" href="/data-and-backend/networking">Overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/fetch-data">Fetch data from the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/authenticated-requests">Make authenticated requests</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/send-data">Send data to the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/update-data">Update data over the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/delete-data">Delete data on the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/web-sockets">Communicate with WebSockets</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-20-3" href="/data-and-backend/serialization" role="button" aria-expanded="false" aria-controls="header-sidenav-20-3">Serialization</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-20-3"><li class="nav-item"><a class="nav-link" href="/data-and-backend/serialization/json">JSON serialization</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/background-parsing">Parse JSON in the background</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-20-4" href="/data-and-backend/persistence" role="button" aria-expanded="false" aria-controls="header-sidenav-20-4">Persistence</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-20-4"><li class="nav-item"><a class="nav-link" href="/cookbook/persistence/key-value">Store key-value data on disk</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/persistence/reading-writing-files">Read and write files</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/persistence/sqlite">Persist data with SQLite</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-20-5" href="/data-and-backend/firebase" role="button" aria-expanded="false" aria-controls="header-sidenav-20-5">Firebase</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-20-5"><li class="nav-item"><a class="nav-link" href="/data-and-backend/firebase">Overview</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/docs/flutter/setup" target="_blank" rel="noopener">Add Firebase to your Flutter app</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/google-apis">Google APIs</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-21" role="button" aria-expanded="false" aria-controls="header-sidenav-21">App architecture</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-21"><li class="nav-item"><a class="nav-link" href="/app-architecture">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/app-architecture/concepts">Architecture concepts</a></li><li class="nav-item"><a class="nav-link" href="/app-architecture/guide">Guide to app architecture</a></li><li class="nav-item"><a class="nav-link" href="/app-architecture/recommendations">Recommendations</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-21-5" href="/cookbook/architecture" role="button" aria-expanded="false" aria-controls="header-sidenav-21-5">Design patterns</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-21-5"><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/optimistic-state">Optimistic state</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/key-value-data">Persistent storage architecture: Key-value data</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/sql">Persistent storage architecture: SQL</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/offline-first">Offline-first</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-22" role="button" aria-expanded="false" aria-controls="header-sidenav-22">Platform integration</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22"><li class="nav-item"><a class="nav-link" href="/reference/supported-platforms">Supported platforms</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/desktop">Build desktop apps with Flutter</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/platform-channels">Write platform-specific code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/platform-adaptations">Automatic platform adaptations</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-22-5" href="/platform-integration/android" role="button" aria-expanded="false" aria-controls="header-sidenav-22-5">Android</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22-5"><li class="nav-item"><a class="nav-link" href="/platform-integration/android/install-android">Add Android as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/splash-screen">Add a splash screen</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/predictive-back">Add predictive back</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/c-interop">Bind to native code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/platform-views">Host a native Android view</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/call-jetpack-apis">Calling JetPack APIs</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/compose-activity">Launch a Jetpack Compose activity</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/restore-state-android">Restore state on Android</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/chromeos">Target ChromeOS with Android</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-22-6" href="/platform-integration/ios" role="button" aria-expanded="false" aria-controls="header-sidenav-22-6">iOS</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22-6"><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/install-ios">Add iOS as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/ios-latest">Flutter on latest iOS</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/apple-frameworks">Leverage Apple's system libraries</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/launch-screen">Add a launch screen</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/ios-app-clip">Add iOS App Clip support</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/app-extensions">Add iOS app extensions</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/c-interop">Bind to native code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/platform-views">Host a native iOS view</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/ios-debugging">Enable debugging on iOS</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/restore-state-ios">Restore state on iOS</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-22-7" href="/platform-integration/linux" role="button" aria-expanded="false" aria-controls="header-sidenav-22-7">Linux</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22-7"><li class="nav-item"><a class="nav-link" href="/platform-integration/linux/install-linux">Add Linux as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/linux/building">Build a Linux app</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-22-8" href="/platform-integration/macos" role="button" aria-expanded="false" aria-controls="header-sidenav-22-8">macOS</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22-8"><li class="nav-item"><a class="nav-link" href="/platform-integration/macos/install-macos">Add macOS as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/macos/building">Build a macOS app</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/macos/c-interop">Bind to native code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/macos/platform-views">Host a native macOS view</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-22-9" href="/platform-integration/web" role="button" aria-expanded="false" aria-controls="header-sidenav-22-9">Web</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22-9"><li class="nav-item"><a class="nav-link" href="/platform-integration/web">Web support in Flutter</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/install-web">Add web as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/building">Build a web app</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/wasm">Compile to WebAssembly</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/initialization">Customize app initialization</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/embedding-flutter-web">Add Flutter to any web app</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/web-content-in-flutter">Web content in Flutter</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/renderers">Web renderers</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/web-images">Display images on the web</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/faq">Web FAQ</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-22-10" href="/platform-integration/windows" role="button" aria-expanded="false" aria-controls="header-sidenav-22-10">Windows</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22-10"><li class="nav-item"><a class="nav-link" href="/platform-integration/windows/install-windows">Add Windows as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/windows/building">Build a Windows app</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-23" role="button" aria-expanded="false" aria-controls="header-sidenav-23">Packages & plugins</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-23"><li class="nav-item"><a class="nav-link" href="/packages-and-plugins/using-packages">Use packages & plugins</a></li><li class="nav-item"><a class="nav-link" href="/packages-and-plugins/developing-packages">Develop packages & plugins</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-23-3" href="/packages-and-plugins/swift-package-manager" role="button" aria-expanded="false" aria-controls="header-sidenav-23-3">Swift Package Manager</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-23-3"><li class="nav-item"><a class="nav-link" href="/packages-and-plugins/swift-package-manager/for-app-developers">For app developers</a></li><li class="nav-item"><a class="nav-link" href="/packages-and-plugins/swift-package-manager/for-plugin-authors">For plugin authors</a></li></ul></li><div class="dropdown-divider"></div><li class="nav-item"><a class="nav-link" href="/packages-and-plugins/favorites">Flutter Favorites</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/flutter" target="_blank" rel="noopener">Package repository</a></li></ul></li><li class="nav-item"><a class="nav-link active collapsible" data-toggle="collapse" href="#header-sidenav-24" role="button" aria-expanded="true" aria-controls="header-sidenav-24">Testing & debugging</a><ul class="nav flex-column flex-nowrap collapse show" id="header-sidenav-24"><li class="nav-header">Testing</li><li class="nav-item"><a class="nav-link" href="/testing/overview">Overview</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-24-3" href="#header-sidenav-24-3" role="button" aria-expanded="false" aria-controls="header-sidenav-24-3">Unit testing</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-24-3"><li class="nav-item"><a class="nav-link" href="/cookbook/testing/unit/introduction">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/testing/unit/mocking">Mock dependencies</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-24-4" href="#header-sidenav-24-4" role="button" aria-expanded="false" aria-controls="header-sidenav-24-4">Widget testing</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-24-4"><li class="nav-item"><a class="nav-link" href="/cookbook/testing/widget/introduction">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/testing/widget/finders">Find widgets</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/testing/widget/scrolling">Simulate scrolling</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/testing/widget/tap-drag">Simulate user interaction</a></li></ul></li><li class="nav-item"><a class="nav-link active collapsible" data-toggle="collapse" data-target="#header-sidenav-24-5" href="#header-sidenav-24-5" role="button" aria-expanded="true" aria-controls="header-sidenav-24-5">Integration testing</a><ul class="nav flex-column flex-nowrap collapse show" id="header-sidenav-24-5"><li class="nav-item"><a class="nav-link" href="/cookbook/testing/integration/introduction">Introduction</a></li><li class="nav-item"><a class="nav-link active" href="/testing/integration-tests">Write and run an integration test</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/testing/integration/profiling">Profile an integration test</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/testing/testing-plugins">Test a plugin</a></li><li class="nav-item"><a class="nav-link" href="/testing/plugins-in-tests">Handle plugin code in tests</a></li><li class="nav-header">Debugging</li><li class="nav-item"><a class="nav-link" href="/testing/debugging">Debugging tools</a></li><li class="nav-item"><a class="nav-link" href="/testing/code-debugging">Debug your app programmatically</a></li><li class="nav-item"><a class="nav-link" href="/testing/native-debugging">Use a native language debugger</a></li><li class="nav-item"><a class="nav-link" href="/testing/build-modes">Flutter's build modes</a></li><li 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collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-5-3" href="#fixed-sidenav-5-3" role="button" aria-expanded="false" aria-controls="fixed-sidenav-5-3">Games</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-5-3"><li class="nav-item"><a class="nav-link" href="/resources/games-toolkit">Overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/games/achievements-leaderboard">Add achievements and leaderboards</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/codelabs/build-leaderboards-with-firestore#0" target="_blank" rel="noopener">Build leaderboards with Firestore</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/plugins/google-mobile-ads">Add advertising</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/games/firestore-multiplayer">Add multiplayer support</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/flutter-in-app-purchases" target="_blank" rel="noopener">Add in-app purchases</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/codelabs/firebase-auth-in-flutter-apps" target="_blank" rel="noopener">Add user authentication</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/docs/crashlytics/get-started?platform=flutter" target="_blank" rel="noopener">Debug using Crashlytics</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/flutter-flame-brick-breaker" target="_blank" rel="noopener">Intro to Flame with Flutter</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-5-4" href="#fixed-sidenav-5-4" role="button" aria-expanded="false" aria-controls="fixed-sidenav-5-4">Monetization</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-5-4"><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-5-4-1" href="#fixed-sidenav-5-4-1" role="button" aria-expanded="false" aria-controls="fixed-sidenav-5-4-1">Advertising</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-5-4-1"><li class="nav-item"><a class="nav-link" href="/resources/ads-overview">Ads overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/plugins/google-mobile-ads">Add advertising</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/admob-ads-in-flutter" target="_blank" rel="noopener">Add AdMob ads to your Flutter app</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/admob-inline-ads-in-flutter" target="_blank" rel="noopener">Add an AdMob banner and native inline ads</a></li><li class="nav-item"><a class="nav-link" href="https://developers.google.com/admob/flutter/mediation" target="_blank" rel="noopener">Google AdMob mediation</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/packages/interactive_media_ads" target="_blank" rel="noopener">Interactive Media Ads SDK</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-5-4-2" href="#fixed-sidenav-5-4-2" role="button" aria-expanded="false" aria-controls="fixed-sidenav-5-4-2">In-app purchases</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-5-4-2"><li class="nav-item"><a class="nav-link" href="/resources/in-app-purchases-overview">In-app purchases overview</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/flutter-in-app-purchases" target="_blank" rel="noopener">Add in-app purchases</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-5-4-3" href="#fixed-sidenav-5-4-3" role="button" aria-expanded="false" aria-controls="fixed-sidenav-5-4-3">Payments</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-5-4-3"><li class="nav-item"><a class="nav-link" href="/resources/payments-overview">Payments overview</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/packages/pay" target="_blank" rel="noopener">Google pay package</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-5-5" href="#fixed-sidenav-5-5" role="button" aria-expanded="false" aria-controls="fixed-sidenav-5-5">Maps</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-5-5"><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/google-maps-in-flutter" target="_blank" rel="noopener">Add Google maps to a Flutter app</a></li><li class="nav-item"><a class="nav-link" href="https://developers.google.com/maps/flutter-package" target="_blank" rel="noopener">Google Maps package</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-5-6" href="#fixed-sidenav-5-6" role="button" aria-expanded="false" aria-controls="fixed-sidenav-5-6">News</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-5-6"><li class="nav-item"><a class="nav-link" href="/resources/news-toolkit">Build a news app</a></li></ul></li></ul></li><li aria-hidden="true"><div class="sidebar-primary-divider"></div></li><li class="nav-header">User interface</li><li class="nav-item"><a class="nav-link" href="/ui">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/ui/widgets">Widget catalog</a></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-10" role="button" aria-expanded="false" aria-controls="fixed-sidenav-10">Layout</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-10"><li class="nav-item"><a class="nav-link" href="/ui/layout">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/ui/layout/tutorial">Build a layout</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-10-3" href="/ui/layout/lists" role="button" aria-expanded="false" aria-controls="fixed-sidenav-10-3">Lists & grids</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-10-3"><li class="nav-item"><a class="nav-link" href="/cookbook/lists/basic-list">Create and use lists</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/horizontal-list">Create a horizontal list</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/grid-lists">Create a grid view</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/mixed-list">Create lists with different types of items</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/spaced-items">Create lists with spaced items</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/long-lists">Work with long lists</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-10-4" href="/ui/layout/scrolling" role="button" aria-expanded="false" aria-controls="fixed-sidenav-10-4">Scrolling</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-10-4"><li class="nav-item"><a class="nav-link" href="/ui/layout/scrolling">Overview</a></li><li class="nav-item"><a class="nav-link" href="/ui/layout/scrolling/slivers">Use slivers to achieve fancy scrolling</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/floating-app-bar">Place a floating app bar above a list</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/effects/parallax-scrolling">Create a scrolling parallax effect</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-11" role="button" aria-expanded="false" aria-controls="fixed-sidenav-11">Adaptive & responsive design</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-11"><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive">Overview</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/general">General approach</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/safearea-mediaquery">SafeArea & MediaQuery</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/large-screens">Large screens & foldables</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/input">User input & accessibility</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/capabilities">Capabilities & policies</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/best-practices">Best practices</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/more-info">Additional resources</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-12" role="button" aria-expanded="false" aria-controls="fixed-sidenav-12">Design & theming</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-12"><li class="nav-item"><a class="nav-link" href="/cookbook/design/themes">Share styles with themes</a></li><li class="nav-item"><a class="nav-link" href="/ui/design/material">Material design</a></li><li class="nav-item"><a class="nav-link" href="/release/breaking-changes/material-3-migration">Migrate to Material 3</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-12-4" href="/ui/design/text" role="button" aria-expanded="false" aria-controls="fixed-sidenav-12-4">Text</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-12-4"><li class="nav-item"><a class="nav-link" href="/ui/design/text/typography">Fonts & typography</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/fonts">Use a custom font</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/package-fonts">Export fonts from a package</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/packages/google_fonts" target="_blank" rel="noopener">Google Fonts package</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-12-5" href="/ui/design/graphics" role="button" aria-expanded="false" aria-controls="fixed-sidenav-12-5">Custom graphics</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-12-5"><li class="nav-item"><a class="nav-link" href="/ui/design/graphics/fragment-shaders">Use custom fragment shaders</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-13" role="button" aria-expanded="false" aria-controls="fixed-sidenav-13">Interactivity</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-13"><li class="nav-item"><a class="nav-link" href="/ui/interactivity">Add interactivity to your app</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-13-2" href="/ui/interactivity/gestures" role="button" aria-expanded="false" aria-controls="fixed-sidenav-13-2">Gestures</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-13-2"><li class="nav-item"><a class="nav-link" href="/ui/interactivity/gestures">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/gestures/handling-taps">Handle taps</a></li><li class="nav-item"><a class="nav-link" href="/ui/interactivity/gestures/drag-outside">Drag an object outside an app</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/effects/drag-a-widget">Drag a UI element within an app</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/gestures/ripples">Add Material touch ripples</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/gestures/dismissible">Implement swipe to dismiss</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-13-3" href="/ui/interactivity/input" role="button" aria-expanded="false" aria-controls="fixed-sidenav-13-3">Input & forms</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-13-3"><li class="nav-item"><a class="nav-link" href="/cookbook/forms/text-input">Create and style a text field</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/retrieve-input">Retrieve the value of a text field</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/text-field-changes">Handle changes to a text field</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/focus">Manage focus in text fields</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/validation">Build a form with validation</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/snackbars">Display a snackbar</a></li><li class="nav-item"><a class="nav-link" href="/ui/interactivity/actions-and-shortcuts">Implement actions & shortcuts</a></li><li class="nav-item"><a class="nav-link" href="/ui/interactivity/focus">Manage keyboard focus</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-14" role="button" aria-expanded="false" aria-controls="fixed-sidenav-14">Assets & media</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-14"><li class="nav-item"><a class="nav-link" href="/ui/assets/assets-and-images">Add assets and images</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/images/network-image">Display images from the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/images/fading-in-images">Fade in images with a placeholder</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/plugins/play-video">Play and pause a video</a></li><li class="nav-item"><a class="nav-link" href="/ui/assets/asset-transformation">Transform assets at build time</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-15" role="button" aria-expanded="false" aria-controls="fixed-sidenav-15">Navigation & routing</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-15"><li class="nav-item"><a class="nav-link" href="/ui/navigation">Overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/tabs">Add tabs to your app</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/navigation-basics">Navigate to a new screen and back</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/passing-data">Send data to a new screen</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/returning-data">Return data from a screen</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/drawer">Add a drawer to a screen</a></li><li class="nav-item"><a class="nav-link" href="/ui/navigation/deep-linking">Set up deep linking</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/set-up-app-links">Set up app links for Android</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/set-up-universal-links">Set up universal links for iOS</a></li><li class="nav-item"><a class="nav-link" href="/ui/navigation/url-strategies">Configure web URL strategies</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-16" role="button" aria-expanded="false" aria-controls="fixed-sidenav-16">Animations & transitions</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-16"><li class="nav-item"><a class="nav-link" href="/ui/animations">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/tutorial">Tutorial</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/implicit-animations">Implicit animations</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/animated-container">Animate the properties of a container</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/opacity-animation">Fade a widget in and out</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/hero-animations">Hero animations</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/page-route-animation">Animate a page route transition</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/physics-simulation">Animate using a physics simulation</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/staggered-animations">Staggered animations</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/effects/staggered-menu-animation">Create a staggered menu animation</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/overview">API overview</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-17" role="button" aria-expanded="false" aria-controls="fixed-sidenav-17">Accessibility & internationalization</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-17"><li class="nav-item"><a class="nav-link" href="/ui/accessibility-and-internationalization/accessibility">Accessibility</a></li><li class="nav-item"><a class="nav-link" href="/ui/accessibility-and-internationalization/internationalization">Internationalization</a></li></ul></li><li aria-hidden="true"><div class="sidebar-primary-divider"></div></li><li class="nav-header">Beyond UI</li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-20" role="button" aria-expanded="false" aria-controls="fixed-sidenav-20">Data & backend</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-20"><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-20-1" href="/data-and-backend/state-mgmt" role="button" aria-expanded="false" aria-controls="fixed-sidenav-20-1">State management</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-20-1"><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/intro">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/declarative">Think declaratively</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/ephemeral-vs-app">Ephemeral vs app state</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/simple">Simple app state management</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/options">Options</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-20-2" href="/data-and-backend/networking" role="button" aria-expanded="false" aria-controls="fixed-sidenav-20-2">Networking & http</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-20-2"><li class="nav-item"><a class="nav-link" href="/data-and-backend/networking">Overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/fetch-data">Fetch data from the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/authenticated-requests">Make authenticated requests</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/send-data">Send data to the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/update-data">Update data over the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/delete-data">Delete data on the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/web-sockets">Communicate with WebSockets</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-20-3" href="/data-and-backend/serialization" role="button" aria-expanded="false" aria-controls="fixed-sidenav-20-3">Serialization</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-20-3"><li class="nav-item"><a class="nav-link" href="/data-and-backend/serialization/json">JSON serialization</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/background-parsing">Parse JSON in the background</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-20-4" href="/data-and-backend/persistence" role="button" aria-expanded="false" aria-controls="fixed-sidenav-20-4">Persistence</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-20-4"><li class="nav-item"><a class="nav-link" href="/cookbook/persistence/key-value">Store key-value data on disk</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/persistence/reading-writing-files">Read and write files</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/persistence/sqlite">Persist data with SQLite</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-20-5" href="/data-and-backend/firebase" role="button" aria-expanded="false" aria-controls="fixed-sidenav-20-5">Firebase</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-20-5"><li class="nav-item"><a class="nav-link" href="/data-and-backend/firebase">Overview</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/docs/flutter/setup" target="_blank" rel="noopener">Add Firebase to your Flutter app</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/google-apis">Google APIs</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-21" role="button" aria-expanded="false" aria-controls="fixed-sidenav-21">App architecture</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-21"><li class="nav-item"><a class="nav-link" href="/app-architecture">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/app-architecture/concepts">Architecture concepts</a></li><li class="nav-item"><a class="nav-link" href="/app-architecture/guide">Guide to app architecture</a></li><li class="nav-item"><a class="nav-link" href="/app-architecture/recommendations">Recommendations</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-21-5" href="/cookbook/architecture" role="button" aria-expanded="false" aria-controls="fixed-sidenav-21-5">Design patterns</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-21-5"><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/optimistic-state">Optimistic state</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/key-value-data">Persistent storage architecture: Key-value data</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/sql">Persistent storage architecture: SQL</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/offline-first">Offline-first</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-22" role="button" aria-expanded="false" aria-controls="fixed-sidenav-22">Platform integration</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-22"><li class="nav-item"><a class="nav-link" href="/reference/supported-platforms">Supported platforms</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/desktop">Build desktop apps with Flutter</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/platform-channels">Write platform-specific code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/platform-adaptations">Automatic platform adaptations</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" 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href="/platform-integration/ios/apple-frameworks">Leverage Apple's system libraries</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/launch-screen">Add a launch screen</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/ios-app-clip">Add iOS App Clip support</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/app-extensions">Add iOS app extensions</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/c-interop">Bind to native code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/platform-views">Host a native iOS view</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/ios-debugging">Enable debugging on iOS</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/restore-state-ios">Restore state on iOS</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" 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href="/cookbook/testing/integration/introduction">Introduction</a></li><li class="nav-item"><a class="nav-link active" href="/testing/integration-tests">Write and run an integration test</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/testing/integration/profiling">Profile an integration test</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/testing/testing-plugins">Test a plugin</a></li><li class="nav-item"><a class="nav-link" href="/testing/plugins-in-tests">Handle plugin code in tests</a></li><li class="nav-header">Debugging</li><li class="nav-item"><a class="nav-link" href="/testing/debugging">Debugging tools</a></li><li class="nav-item"><a class="nav-link" href="/testing/code-debugging">Debug your app programmatically</a></li><li class="nav-item"><a class="nav-link" href="/testing/native-debugging">Use a native language debugger</a></li><li class="nav-item"><a class="nav-link" href="/testing/build-modes">Flutter's build modes</a></li><li 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href="/perf/deferred-components">Deferred components</a></li><li class="nav-item"><a class="nav-link" href="/perf/rendering-performance">Rendering performance</a></li><li class="nav-item"><a class="nav-link" href="/perf/ui-performance">Performance profiling</a></li><li class="nav-item"><a class="nav-link" href="/perf/web-performance">Performance profiling for web</a></li><li class="nav-item"><a class="nav-link" href="/perf/shader">Shader compilation jank</a></li><li class="nav-item"><a class="nav-link" href="/perf/metrics">Performance metrics</a></li><li class="nav-item"><a class="nav-link" href="/perf/isolates">Concurrency and isolates</a></li><li class="nav-item"><a class="nav-link" href="/perf/faq">Performance FAQ</a></li><li class="nav-item"><a class="nav-link" href="/perf/appendix">Appendix</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-26" role="button" aria-expanded="false" aria-controls="fixed-sidenav-26">Deployment</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-26"><li class="nav-item"><a class="nav-link" href="/deployment/obfuscate">Obfuscate Dart code</a></li><li class="nav-item"><a class="nav-link" href="/deployment/flavors">Create flavors of an app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/android">Build and release an Android app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/ios">Build and release an iOS app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/macos">Build and release a macOS app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/linux">Build and release a Linux app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/windows">Build and release a Windows app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/web">Build and release a web app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/cd">Set up continuous deployment</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-27" role="button" aria-expanded="false" aria-controls="fixed-sidenav-27">Add to an existing app</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-27"><li class="nav-item"><a class="nav-link" href="/add-to-app">Introduction</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-27-2" href="/add-to-app/android" role="button" aria-expanded="false" aria-controls="fixed-sidenav-27-2">Add to an Android app</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-27-2"><li class="nav-item"><a class="nav-link" href="/add-to-app/android/project-setup">Set up Android project</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/android/add-flutter-screen">Add a single Flutter screen</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/android/add-flutter-fragment">Add a Flutter Fragment</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/android/add-flutter-view">Add a Flutter View</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/android/plugin-setup">Use a Flutter plugin</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-27-3" href="/add-to-app/ios" role="button" aria-expanded="false" aria-controls="fixed-sidenav-27-3">Add to an iOS app</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-27-3"><li class="nav-item"><a class="nav-link" href="/add-to-app/ios/project-setup">Set up iOS project</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/ios/add-flutter-screen">Add a single Flutter screen</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/embedding-flutter-web">Add to a web app</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/debugging">Debug embedded Flutter module</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/multiple-flutters">Add multiple Flutter instances</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/performance">Loading sequence and performance</a></li></ul></li><li aria-hidden="true"><div class="sidebar-primary-divider"></div></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-29" role="button" aria-expanded="false" aria-controls="fixed-sidenav-29">Tools & editors</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-29"><li class="nav-item"><a class="nav-link" href="/tools/android-studio">Android Studio & IntelliJ</a></li><li class="nav-item"><a class="nav-link" href="/tools/vs-code">Visual Studio Code</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" 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CLI</a></li><li class="nav-item"><a class="nav-link" href="https://api.flutter.dev" target="_blank" rel="noopener">API docs</a></li></ul></li></ul></li></ul></div><main class="site-content col-12 col-md-9 offset-md-3 col-xl-8 offset-xl-2 col-xxl-8 offset-xxl-2"><div id="site-toc--side" class="site-toc fixed-col col-xl-2 order-3" data-fixed-column><header class="site-toc__title">Contents</header><ul class="section-nav"><li class="toc-entry nav-item toc-h2"><a class="nav-link" href="#create-a-new-app-to-test">Create a new app to test</a></li><li class="toc-entry nav-item toc-h2"><a class="nav-link" href="#add-the-integration_test-dependency">Add the integration_test dependency</a></li><li class="toc-entry nav-item toc-h2"><a class="nav-link" href="#create-the-integration-test-files">Create the integration test files</a></li><li class="toc-entry nav-item toc-h2"><a class="nav-link" href="#write-the-integration-test">Write the integration test</a></li><li class="toc-entry nav-item toc-h2"><a class="nav-link" href="#run-integration-tests">Run integration tests</a><ul class="nav"><li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#test-on-a-desktop-platform">Test on a desktop platform</a></li><li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#test-on-a-mobile-device">Test on a mobile device</a></li><li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#test-in-a-web-browser">Test in a web browser</a></li><li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#test-using-the-firebase-test-lab">Test using the Firebase Test Lab</a></li></ul></li></ul></div><div class="container"><header class="site-content__title" id="site-content-title"><h1>Check app functionality with an integration test</h1><nav class="breadcrumbs" aria-label="breadcrumb"><ol class="breadcrumb-list" vocab="https://schema.org/" typeof="BreadcrumbList"><li class="breadcrumb-item" property="itemListElement" typeof="ListItem"><a href="/testing" property="item" typeof="WebPage">Testing & debugging</a><meta property="position" content="0">chevron_right</li><li class="breadcrumb-item active" property="itemListElement" typeof="ListItem" aria-current="page"><a href="/testing/integration-tests" property="item" typeof="WebPage">Check app functionality with an integration test</a><meta property="position" content="1"></li></ol></nav></header><div id="site-toc--inline" class="site-toc"><header class="site-toc__title">Contents</header><ul class="section-nav"><li class="toc-entry toc-h2"><a href="#create-a-new-app-to-test">Create a new app to test</a></li><li class="toc-entry toc-h2"><a href="#add-the-integration_test-dependency">Add the integration_test dependency</a></li><li class="toc-entry toc-h2"><a href="#create-the-integration-test-files">Create the integration test files</a></li><li class="toc-entry toc-h2"><a href="#write-the-integration-test">Write the integration test</a></li><li class="toc-entry toc-h2"><a href="#run-integration-tests">Run integration tests</a><ul><li class="toc-entry toc-h3"><a href="#test-on-a-desktop-platform">Test on a desktop platform</a></li><li class="toc-entry toc-h3"><a href="#test-on-a-mobile-device">Test on a mobile device</a></li><li class="toc-entry toc-h3"><a href="#test-in-a-web-browser">Test in a web browser</a></li><li class="toc-entry toc-h3"><a href="#test-using-the-firebase-test-lab">Test using the Firebase Test Lab</a></li></ul></li></ul></div> <?code-excerpt path-base="testing/integration_tests/how_to"?> This recipe describes how to use the <a href="https://github.com/flutter/flutter/tree/main/packages/integration_test#integration_test"><code>integration_test</code></a> package to run integration tests. The Flutter SDK includes the <code>integration_test</code> package. Integration tests using this package have the following properties.<ul><li>Use the <code>flutter drive</code> command to run tests on a physical device or emulator.</li><li>Run on <a href="https://firebase.google.com/docs/test-lab">Firebase Test Lab</a>, to automate testing on a variety of devices.</li><li>Use <a href="https://api.flutter.dev/flutter/flutter_test/flutter_test-library.html">flutter_test</a> APIs to enable tests to be written in a style similar to <a href="/testing/overview#widget-tests">widget tests</a></li></ul>In this recipe, learn how to test a counter app.<ul><li>how to set up integration tests</li><li>how to verify if an app displays specific text</li><li>how to tap specific widgets</li><li>how to run integration tests</li></ul>This recipe uses the following steps:<ol><li>Create an app to test.</li><li>Add the <code>integration_test</code> dependency.</li><li>Create the test files.</li><li>Write the integration test.</li><li>Run the integration test.</li></ol><div class="header-wrapper"><h2 id="create-a-new-app-to-test">Create a new app to test</h2><a class="heading-link" href="#create-a-new-app-to-test" aria-label="Link to 'Create a new app to test' section">#</a></div>Integration testing requires an app to test. This example uses the built-in Counter App example that Flutter produces when you run the <code>flutter create</code> command. The counter app allows a user to tap on a button to increase a counter.<ol><li>To create an instance of the built-in Flutter app, run the following command in your terminal:<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>flutter create counter_app</code></pre></div></div></li><li>Change into the <code>counter_app</code> directory.</li><li>Open <code>lib/main.dart</code> in your preferred IDE.</li><li>Add a <code>key</code> parameter to the <code>floatingActionButton()</code> widget with an instance of a <code>Key</code> class with a string value of <code>increment</code>.<div class="code-block-wrapper language-dart"><div class="code-block-body">dart<pre class="shiki dash-light" tabindex="0"><code> floatingActionButton: FloatingActionButton( key: const ValueKey('increment'), onPressed: _incrementCounter, tooltip: 'Increment', child: const Icon(Icons.add), ),</code></pre></div></div></li><li>Save your <code>lib/main.dart</code> file.</li></ol>After these changes, the <code>lib/main.dart</code> file should resemble the following code. <?code-excerpt "lib/main.dart"?> <div class="code-block-wrapper language-dart"><div class="code-block-header">lib/main.dart</div><div class="code-block-body">dart<pre class="shiki dash-light" tabindex="0"><code>import 'package:flutter/material.dart'; void main() => runApp(const MyApp()); class MyApp extends StatelessWidget { const MyApp({super.key}); @override Widget build(BuildContext context) { return const MaterialApp( title: 'Counter App', home: MyHomePage(title: 'Counter App Home Page'), ); } } class MyHomePage extends StatefulWidget { const MyHomePage({super.key, required this.title}); final String title; @override State<MyHomePage> createState() => _MyHomePageState(); } class _MyHomePageState extends State<MyHomePage> { int _counter = 0; void _incrementCounter() { setState(() { _counter++; }); } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text(widget.title), ), body: Center( child: Column( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ const Text( 'You have pushed the button this many times:', ), Text( '$_counter', style: Theme.of(context).textTheme.headlineMedium, ), ], ), ), floatingActionButton: FloatingActionButton( // Provide a Key to this button. This allows finding this // specific button inside the test suite, and tapping it. key: const Key('increment'), onPressed: _incrementCounter, tooltip: 'Increment', child: const Icon(Icons.add), ), ); } }</code></pre></div></div><div class="header-wrapper"><h2 id="add-the-integration_test-dependency">Add the <code>integration_test</code> dependency</h2><a class="heading-link" href="#add-the-integration_test-dependency" aria-label="Link to 'Add the integration_test dependency' section">#</a></div>You need to add the testing packages to your new app.To add <code>integration_test</code> and <code>flutter_test</code> packages as <code>dev_dependencies</code> using <code>sdk: flutter</code>, run following command.<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>flutter pub add 'dev:integration_test:{"sdk":"flutter"}'</code></pre></div></div>Output:<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>Building flutter tool... Resolving dependencies... Got dependencies. Resolving dependencies... + file 7.0.0 + flutter_driver 0.0.0 from sdk flutter + fuchsia_remote_debug_protocol 0.0.0 from sdk flutter + integration_test 0.0.0 from sdk flutter ... test_api 0.6.1 (0.7.1 available) vm_service 13.0.0 (14.2.1 available) + webdriver 3.0.3 Changed 8 dependencies! 7 packages have newer versions incompatible with dependency constraints. Try `flutter pub outdated` for more information.</code></pre></div></div>Updated <code>pubspec.yaml</code> file:<div class="code-block-wrapper language-yaml"><div class="code-block-header">pubspec.yaml</div><div class="code-block-body">yaml<pre class="shiki dash-light" tabindex="0"><code># ... dev_dependencies: # ... added dependencies flutter_test: sdk: flutter flutter_lints: ^5.0.0 integration_test: sdk: flutter # ...</code></pre></div></div><div class="header-wrapper"><h2 id="create-the-integration-test-files">Create the integration test files</h2><a class="heading-link" href="#create-the-integration-test-files" aria-label="Link to 'Create the integration test files' section">#</a></div>Integration tests reside in a separate directory inside your Flutter project.<ol><li>Create a new directory named <code>integration_test</code>.</li><li>Add empty file named <code>app_test.dart</code> in that directory.</li></ol>The resulting directory tree should resemble the following:<div class="code-block-wrapper language-plaintext"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>counter_app/ lib/ main.dart integration_test/ app_test.dart</code></pre></div></div><div class="header-wrapper"><h2 id="write-the-integration-test">Write the integration test</h2><a class="heading-link" href="#write-the-integration-test" aria-label="Link to 'Write the integration test' section">#</a></div>The integration test file consists of a Dart code file with dependencies on <code>integration_test</code>, <code>flutter_test</code>, and your app's Dart file.<ol><li>Open your <code>integration_test/app_test.dart</code> file in your preferred IDE.</li><li>Copy the following code and paste it into your <code>integration_test/app_test.dart</code> file. The last import should point to the <code>main.dart</code> file of your <code>counter_app</code>. (This <code>import</code> points to the example app called <code>introduction</code>.) <?code-excerpt "integration_test/counter_test.dart (initial)" replace="/introduction/counter_app/g"?> <div class="code-block-wrapper language-dart"><div class="code-block-header">integration_test/counter_test.dart</div><div class="code-block-body">dart<pre class="shiki dash-light" tabindex="0"><code>import 'package:flutter/material.dart'; import 'package:flutter_test/flutter_test.dart'; import 'package:how_to/main.dart'; import 'package:integration_test/integration_test.dart'; void main() { IntegrationTestWidgetsFlutterBinding.ensureInitialized(); group('end-to-end test', () { testWidgets('tap on the floating action button, verify counter', (tester) async { // Load app widget. await tester.pumpWidget(const MyApp()); // Verify the counter starts at 0. expect(find.text('0'), findsOneWidget); // Finds the floating action button to tap on. final fab = find.byKey(const ValueKey('increment')); // Emulate a tap on the floating action button. await tester.tap(fab); // Trigger a frame. await tester.pumpAndSettle(); // Verify the counter increments by 1. expect(find.text('1'), findsOneWidget); }); }); }</code></pre></div></div></li></ol>This example goes through three steps:<ol><li>Initialize <code>IntegrationTestWidgetsFlutterBinding</code>. This singleton service executes tests on a physical device.</li><li>Interact and test widgets using the <code>WidgetTester</code> class.</li><li>Test the important scenarios.</li></ol><div class="header-wrapper"><h2 id="run-integration-tests">Run integration tests</h2><a class="heading-link" href="#run-integration-tests" aria-label="Link to 'Run integration tests' section">#</a></div>The integration tests that run vary depending on the platform on which you test.<ul><li>To test a desktop platform, use the command line or a CI system.</li><li>To test a mobile platform, use the command line or Firebase Test Lab.</li><li>To test in a web browser, use the command line.</li></ul><hr><div class="header-wrapper"><h3 id="test-on-a-desktop-platform">Test on a desktop platform</h3><a class="heading-link" href="#test-on-a-desktop-platform" aria-label="Link to 'Test on a desktop platform' section">#</a></div><details markdown="1"><summary>Expand if you test Linux apps using a CI system</summary>To test a Linux app, your CI system must invoke an X server first. In the GitHub Action, GitLab Runner, or similar configuration file, set the integration test to work with the <code>xvfb-run</code> tool.Doing this invokes an X Window system into which Flutter can launch and test your Linux app.As an example using GitHub Actions, your <code>jobs.setup.steps</code> should include a step resembling the following:<div class="code-block-wrapper language-yaml"><div class="code-block-body">yaml<pre class="shiki dash-light" tabindex="0"><code> - name: Run Integration Tests uses: username/xvfb-action@v1.1.2 with: run: flutter test integration_test -d linux -r github</code></pre></div></div>This starts the integration test within an X Window.If you don't configure your integration in this way, Flutter returns an error.<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>Building Linux application... Error waiting for a debug connection: The log reader stopped unexpectedly, or never started.</code></pre></div></div></details>To test on a macOS, Windows, or Linux platform, complete the following tasks.<ol><li>Run the following command from the root of the project.<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>flutter test integration_test/app_test.dart</code></pre></div></div></li><li>If offered a choice of platform to test, choose the desktop platform. Type <code>1</code> to choose the desktop platform.</li></ol>Based on platform, the command result should resemble the following output.<div class="tabs-wrapper"><ul class="nav nav-tabs" role="tablist"><li class="nav-item"><a class="nav-link active" data-tab-save-id="windows" id="120-tab" href="#120-tab-panel" role="tab" aria-controls="120-tab-panel" aria-selected="true">Windows</a></li><li class="nav-item"><a class="nav-link" data-tab-save-id="macos" id="121-tab" href="#121-tab-panel" role="tab" aria-controls="121-tab-panel" aria-selected="false">macOS</a></li><li class="nav-item"><a class="nav-link" data-tab-save-id="linux" id="122-tab" href="#122-tab-panel" role="tab" aria-controls="122-tab-panel" aria-selected="false">Linux</a></li></ul><div class="tab-content"><div class="tab-pane active" id="120-tab-panel" role="tabpanel" aria-labelledby="120-tab"><div class="code-block-wrapper language-powershell"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>PS C:\path\to\counter_app> flutter test .\integration_test\app_test.dart Resolving dependencies... Downloading packages... flutter_lints 3.0.2 (4.0.0 available) leak_tracker 10.0.4 (10.0.5 available) leak_tracker_flutter_testing 3.0.3 (3.0.5 available) lints 3.0.0 (4.0.0 available) material_color_utilities 0.8.0 (0.11.1 available) meta 1.12.0 (1.15.0 available) test_api 0.7.0 (0.7.1 available) vm_service 14.2.1 (14.2.2 available) Got dependencies! 8 packages have newer versions incompatible with dependency constraints. Try `flutter pub outdated` for more information. Connected devices: Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.22631.3593] Chrome (web) • chrome • web-javascript • Google Chrome 124.0.6367.207 Edge (web) • edge • web-javascript • Microsoft Edge 124.0.2478.97 [1]: Windows (windows) [2]: Chrome (chrome) [3]: Edge (edge) Please choose one (or "q" to quit): 1 00:00 +0: loading C:/path/to/counter_app/integration_test/app_test.dart B 00:29 +0: loading C:/path/to/counter_app/counter_app/integration_test/app_test.dart 29.1s √ Built build\windows\x64\runner\Debug\counter_app.exe 00:31 +1: All tests passed!</code></pre></div></div></div><div class="tab-pane" id="121-tab-panel" role="tabpanel" aria-labelledby="121-tab"><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>flutter test integration_test Resolving dependencies... Downloading packages... flutter_lints 3.0.2 (4.0.0 available) > leak_tracker 10.0.4 (was 10.0.0) (10.0.5 available) > leak_tracker_flutter_testing 3.0.3 (was 2.0.1) (3.0.5 available) > leak_tracker_testing 3.0.1 (was 2.0.1) lints 3.0.0 (4.0.0 available) material_color_utilities 0.8.0 (0.11.1 available) > meta 1.12.0 (was 1.11.0) (1.15.0 available) > test_api 0.7.0 (was 0.6.1) (0.7.1 available) > vm_service 14.2.1 (was 13.0.0) (14.2.2 available) Changed 6 dependencies! 8 packages have newer versions incompatible with dependency constraints. Try `flutter pub outdated` for more information. Connected devices: macOS (desktop) • macos • darwin-arm64 • macOS 14.4.1 23E224 darwin-arm64 Mac Designed for iPad (desktop) • mac-designed-for-ipad • darwin • macOS 14.4.1 23E224 darwin-arm64 Chrome (web) • chrome • web-javascript • Google Chrome 124.0.6367.208 No wireless devices were found. [1]: macOS (macos) [2]: Mac Designed for iPad (mac-designed-for-ipad) [3]: Chrome (chrome) Please choose one (or "q" to quit): 1 00:01 +0: loading /path/to/counter_app/integration_test/app_test.dart R 00:02 +0: loading /path/to/counter_app/integration_test/app_test.dart 846ms 00:03 +0: loading /path/to/counter_app/integration_test/app_test.dart B Building macOS application... ✓ Built build/macos/Build/Products/Debug/counter_app.app 00:32 +1: All tests passed!</code></pre></div></div></div><div class="tab-pane" id="122-tab-panel" role="tabpanel" aria-labelledby="122-tab"><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>flutter test integration_test/app_test.dart Connected devices: Linux (desktop) • linux • linux-x64 • Ubuntu 22.04.4 LTS 6.5.0-35-generic Chrome (web) • chrome • web-javascript • Google Chrome 104.0.5112.101 [1]: Linux (linux) [2]: Chrome (chrome) Please choose one (or "q" to quit): 1 00:00 +0: /path/to/counter_app/integration_test/app_test.dart B 00:16 +0: /path/to/counter_app/integration_test/app_test.dart ✓ Built build/linux/x64/debug/bundle/counter_app</code></pre></div></div></div></div></div><hr><div class="header-wrapper"><h3 id="test-on-a-mobile-device">Test on a mobile device</h3><a class="heading-link" href="#test-on-a-mobile-device" aria-label="Link to 'Test on a mobile device' section">#</a></div>To test on a real iOS or Android device, complete the following tasks.<ol><li>Connect the device.</li><li>Run the following command from the root of the project.<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>flutter test integration_test/app_test.dart</code></pre></div></div>The result should resemble the following output. This example uses iOS.<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>flutter test integration_test/app_test.dart 00:04 +0: loading /path/to/counter_app/integration_test/app_test.dart 00:15 +0: loading /path/to/counter_app/integration_test/app_test.dart 00:18 +0: loading /path/to/counter_app/integration_test/app_test.dart 2,387ms Xcode build done. 13.5s 00:21 +1: All tests passed!</code></pre></div></div></li><li>Verify that the test removed the Counter App when it finished. If not, subsequent tests fail. If needed, press on the app and choose Remove App from the context menu.</li></ol><hr><div class="header-wrapper"><h3 id="test-in-a-web-browser">Test in a web browser</h3><a class="heading-link" href="#test-in-a-web-browser" aria-label="Link to 'Test in a web browser' section">#</a></div>To test in a web browser, perform the following steps.<ol><li>Install <a href="https://googlechromelabs.github.io/chrome-for-testing/">ChromeDriver</a> into the directory of your choice.<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>npx @puppeteer/browsers install chromedriver@stable</code></pre></div></div>To simplify the install, this command uses the <a href="https://www.npmjs.com/package/@puppeteer/browsers"><code>@puppeteer/browsers</code></a> Node library.</li><li>Add the path to ChromeDriver to your <code>$PATH</code> environment variable.</li><li>Verify the ChromeDriver install succeeded.<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>chromedriver --version ChromeDriver 124.0.6367.60 (8771130bd84f76d855ae42fbe02752b03e352f17-refs/branch-heads/6367@{#798})</code></pre></div></div></li><li>In your <code>counter_app</code> project directory, create a new directory named <code>test_driver</code>.<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>mkdir test_driver</code></pre></div></div></li><li>In this directory, create a new file named <code>integration_test.dart</code>.</li><li>Copy the following code and paste it into your <code>integration_test.dart</code> file. <?code-excerpt "test_driver/integration_test.dart"?> <div class="code-block-wrapper language-dart"><div class="code-block-header">test_driver/integration_test.dart</div><div class="code-block-body">dart<pre class="shiki dash-light" tabindex="0"><code>import 'package:integration_test/integration_test_driver.dart'; Future<void> main() => integrationDriver();</code></pre></div></div></li><li>Launch <code>chromedriver</code> as follows:<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>chromedriver --port=4444</code></pre></div></div></li><li>From the root of the project, run the following command:<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>flutter drive \ --driver=test_driver/integration_test.dart \ --target=integration_test/app_test.dart \ -d chrome</code></pre></div></div>The response should resemble the following output:<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>Resolving dependencies... leak_tracker 10.0.0 (10.0.5 available) leak_tracker_flutter_testing 2.0.1 (3.0.5 available) leak_tracker_testing 2.0.1 (3.0.1 available) material_color_utilities 0.8.0 (0.11.1 available) meta 1.11.0 (1.14.0 available) test_api 0.6.1 (0.7.1 available) vm_service 13.0.0 (14.2.1 available) Got dependencies! 7 packages have newer versions incompatible with dependency constraints. Try `flutter pub outdated` for more information. Launching integration_test/app_test.dart on Chrome in debug mode... Waiting for connection from debug service on Chrome... 10.9s This app is linked to the debug service: ws://127.0.0.1:51523/3lofIjIdmbs=/ws Debug service listening on ws://127.0.0.1:51523/3lofIjIdmbs=/ws 00:00 +0: end-to-end test tap on the floating action button, verify counter 00:01 +1: (tearDownAll) 00:01 +2: All tests passed! All tests passed. Application finished.</code></pre></div></div>To run this as a headless test, run <code>flutter drive</code> with <code>-d web-server</code> option:<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>flutter drive \ --driver=test_driver/integration_test.dart \ --target=integration_test/app_test.dart \ -d web-server</code></pre></div></div></li></ol>To learn more, see the <a href="https://github.com/flutter/flutter/blob/master/docs/contributing/testing/Running-Flutter-Driver-tests-with-Web.md">Running Flutter driver tests with web</a> wiki page.<hr><div class="header-wrapper"><h3 id="test-using-the-firebase-test-lab">Test using the Firebase Test Lab</h3><a class="heading-link" href="#test-using-the-firebase-test-lab" aria-label="Link to 'Test using the Firebase Test Lab' section">#</a></div>To test both Android and iOS targets, you can use the Firebase Test Lab.<div class="header-wrapper"><h4 id="android-setup">Android setup</h4><a class="heading-link" href="#android-setup" aria-label="Link to 'Android setup' section">#</a></div>Follow the instructions in the <a href="https://github.com/flutter/flutter/tree/main/packages/integration_test#android-device-testing">Android Device Testing</a> section of the README.<div class="header-wrapper"><h4 id="ios-setup">iOS setup</h4><a class="heading-link" href="#ios-setup" aria-label="Link to 'iOS setup' section">#</a></div>Follow the instructions in the <a href="https://github.com/flutter/flutter/tree/main/packages/integration_test#ios-device-testing">iOS Device Testing</a> section of the README.<div class="header-wrapper"><h4 id="test-lab-project-setup">Test Lab project setup</h4><a class="heading-link" href="#test-lab-project-setup" aria-label="Link to 'Test Lab project setup' section">#</a></div><ol><li>Launch your <a href="http://console.firebase.google.com/">Firebase Console</a>.</li><li>Create a new Firebase project if necessary.</li><li>Navigate to Quality > Test Lab.<img src="/assets/images/docs/integration-test/test-lab-1.png" class="mw-100" alt="Firebase Test Lab Console"></li></ol><div class="header-wrapper"><h4 id="upload-an-android-apk">Upload an Android APK</h4><a class="heading-link" href="#upload-an-android-apk" aria-label="Link to 'Upload an Android APK' section">#</a></div><ol><li>Create an APK using Gradle.<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>pushd android # flutter build generates files in android/ for building the app flutter build apk ./gradlew app:assembleAndroidTest ./gradlew app:assembleDebug -Ptarget=integration_test/<name>_test.dart popd</code></pre></div></div>Where <code><name>_test.dart</code> is the file created in the Project Setup section.</li></ol><aside class="alert alert-info"><div class="alert-header">info Note</div><div class="alert-content">To use <code>--dart-define</code> with `gradlew:<ol><li>Encode all parameters with <code>base64</code>.</li><li>Pass the parameters to gradle in a comma-separated list.<div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code>./gradlew project:task -Pdart-defines="{base64 (key=value)},[...]"</code></pre></div></div></li></ol></div></aside>To start a Robo test and run other tests, drag the "debug" APK from <code><flutter_project_directory>/build/app/outputs/apk/debug</code> into the Android Robo Test target on the web page.<img src="/assets/images/docs/integration-test/test-lab-2.png" class="mw-100" alt="Firebase Test Lab upload"><ol><li>Click Run a test.</li><li>Select the Instrumentation test type.</li><li>Add the App APK to the App APK or AAB box.<code><flutter_project_directory>/build/app/outputs/apk/debug/<file>.apk</code></li><li>Add the Test APK to the Test APK box.<code><flutter_project_directory>/build/app/outputs/apk/androidTest/debug/<file>.apk</code></li></ol><img src="/assets/images/docs/integration-test/test-lab-3.png" class="mw-100" alt="Firebase Test Lab upload two APKs">If a failure occurs, click the red icon to view the output:<img src="/assets/images/docs/integration-test/test-lab-4.png" class="mw-100" alt="Firebase Test Lab test results"><div class="header-wrapper"><h4 id="upload-an-android-apk-from-the-command-line">Upload an Android APK from the command line</h4><a class="heading-link" href="#upload-an-android-apk-from-the-command-line" aria-label="Link to 'Upload an Android APK from the command line' section">#</a></div>See the <a href="https://github.com/flutter/flutter/tree/main/packages/integration_test#firebase-test-lab">Firebase Test Lab section of the README</a> for instructions on uploading the APKs from the command line.<div class="header-wrapper"><h4 id="upload-xcode-tests">Upload Xcode tests</h4><a class="heading-link" href="#upload-xcode-tests" aria-label="Link to 'Upload Xcode tests' section">#</a></div>To learn how to upload the .zip file, consult the <a href="https://firebase.google.com/docs/test-lab/ios/firebase-console">Firebase TestLab iOS instructions</a> on the Firebase TestLab section of the Firebase Console.<div class="header-wrapper"><h4 id="upload-xcode-tests-from-the-command-line">Upload Xcode tests from the command line</h4><a class="heading-link" href="#upload-xcode-tests-from-the-command-line" aria-label="Link to 'Upload Xcode tests from the command line' section">#</a></div>To learn how to upload the .zip file from the command line, consult the <a href="https://github.com/flutter/flutter/tree/main/packages/integration_test#ios-device-testing">iOS Device Testing</a> section in the README.Unless stated otherwise, the documentation on this site reflects the latest stable version of Flutter. 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