// Copyright 2016 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. import 'package:flutter/material.dart'; import 'package:flutter/rendering.dart'; import 'package:flutter/services.dart'; import 'package:flutter_test/flutter_test.dart'; import '../widgets/semantics_tester.dart'; Widget buildSliverAppBarApp({ bool floating, bool pinned, double expandedHeight, bool snap = false }) { return Localizations( locale: const Locale('en', 'US'), delegates: const <LocalizationsDelegate<dynamic>>[ DefaultMaterialLocalizations.delegate, DefaultWidgetsLocalizations.delegate, ], child: Directionality( textDirection: TextDirection.ltr, child: MediaQuery( data: const MediaQueryData(), child: Scaffold( body: DefaultTabController( length: 3, child: CustomScrollView( primary: true, slivers: <Widget>[ SliverAppBar( title: const Text('AppBar Title'), floating: floating, pinned: pinned, expandedHeight: expandedHeight, snap: snap, bottom: TabBar( tabs: <String>['A','B','C'].map<Widget>((String t) => Tab(text: 'TAB $t')).toList(), ), ), SliverToBoxAdapter( child: Container( height: 1200.0, color: Colors.orange[400], ), ), ], ), ), ), ), ), ); } ScrollController primaryScrollController(WidgetTester tester) { return PrimaryScrollController.of(tester.element(find.byType(CustomScrollView))); } double appBarHeight(WidgetTester tester) => tester.getSize(find.byType(AppBar, skipOffstage: false)).height; double appBarTop(WidgetTester tester) => tester.getTopLeft(find.byType(AppBar, skipOffstage: false)).dy; double appBarBottom(WidgetTester tester) => tester.getBottomLeft(find.byType(AppBar, skipOffstage: false)).dy; double tabBarHeight(WidgetTester tester) => tester.getSize(find.byType(TabBar, skipOffstage: false)).height; void main() { setUp(() { debugResetSemanticsIdCounter(); }); testWidgets('AppBar centers title on iOS', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( theme: ThemeData(platform: TargetPlatform.android), home: Scaffold( appBar: AppBar( title: const Text('X'), ), ), ), ); final Finder title = find.text('X'); Offset center = tester.getCenter(title); Size size = tester.getSize(title); expect(center.dx, lessThan(400 - size.width / 2.0)); // Clear the widget tree to avoid animating between Android and iOS. await tester.pumpWidget(Container(key: UniqueKey())); await tester.pumpWidget( MaterialApp( theme: ThemeData(platform: TargetPlatform.iOS), home: Scaffold( appBar: AppBar( title: const Text('X'), ), ), ), ); center = tester.getCenter(title); size = tester.getSize(title); expect(center.dx, greaterThan(400 - size.width / 2.0)); expect(center.dx, lessThan(400 + size.width / 2.0)); // One action is still centered. await tester.pumpWidget( MaterialApp( theme: ThemeData(platform: TargetPlatform.iOS), home: Scaffold( appBar: AppBar( title: const Text('X'), actions: const <Widget>[ Icon(Icons.thumb_up), ], ), ), ), ); center = tester.getCenter(title); size = tester.getSize(title); expect(center.dx, greaterThan(400 - size.width / 2.0)); expect(center.dx, lessThan(400 + size.width / 2.0)); // Two actions is left aligned again. await tester.pumpWidget( MaterialApp( theme: ThemeData(platform: TargetPlatform.iOS), home: Scaffold( appBar: AppBar( title: const Text('X'), actions: const <Widget>[ Icon(Icons.thumb_up), Icon(Icons.thumb_up), ], ), ), ), ); center = tester.getCenter(title); size = tester.getSize(title); expect(center.dx, lessThan(400 - size.width / 2.0)); }); testWidgets('AppBar centerTitle:true centers on Android', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( theme: ThemeData(platform: TargetPlatform.android), home: Scaffold( appBar: AppBar( centerTitle: true, title: const Text('X'), ), ), ) ); final Finder title = find.text('X'); final Offset center = tester.getCenter(title); final Size size = tester.getSize(title); expect(center.dx, greaterThan(400 - size.width / 2.0)); expect(center.dx, lessThan(400 + size.width / 2.0)); }); testWidgets('AppBar centerTitle:false title start edge is 16.0 (LTR)', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( home: Scaffold( appBar: AppBar( centerTitle: false, title: const Placeholder(key: Key('X')), ), ), ), ); final Finder titleWidget = find.byKey(const Key('X')); expect(tester.getTopLeft(titleWidget).dx, 16.0); expect(tester.getTopRight(titleWidget).dx, 800 - 16.0); }); testWidgets('AppBar centerTitle:false title start edge is 16.0 (RTL)', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( home: Directionality( textDirection: TextDirection.rtl, child: Scaffold( appBar: AppBar( centerTitle: false, title: const Placeholder(key: Key('X')), ), ), ), ), ); final Finder titleWidget = find.byKey(const Key('X')); expect(tester.getTopRight(titleWidget).dx, 800.0 - 16.0); expect(tester.getTopLeft(titleWidget).dx, 16.0); }); testWidgets('AppBar titleSpacing:32 title start edge is 32.0 (LTR)', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( home: Scaffold( appBar: AppBar( centerTitle: false, titleSpacing: 32.0, title: const Placeholder(key: Key('X')), ), ), ), ); final Finder titleWidget = find.byKey(const Key('X')); expect(tester.getTopLeft(titleWidget).dx, 32.0); expect(tester.getTopRight(titleWidget).dx, 800 - 32.0); }); testWidgets('AppBar titleSpacing:32 title start edge is 32.0 (RTL)', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( home: Directionality( textDirection: TextDirection.rtl, child: Scaffold( appBar: AppBar( centerTitle: false, titleSpacing: 32.0, title: const Placeholder(key: Key('X')), ), ), ), ), ); final Finder titleWidget = find.byKey(const Key('X')); expect(tester.getTopRight(titleWidget).dx, 800.0 - 32.0); expect(tester.getTopLeft(titleWidget).dx, 32.0); }); testWidgets( 'AppBar centerTitle:false leading button title left edge is 72.0 (LTR)', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( home: Scaffold( appBar: AppBar( centerTitle: false, title: const Text('X'), ), // A drawer causes a leading hamburger. drawer: const Drawer(), ), ), ); expect(tester.getTopLeft(find.text('X')).dx, 72.0); }); testWidgets( 'AppBar centerTitle:false leading button title left edge is 72.0 (RTL)', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( home: Directionality( textDirection: TextDirection.rtl, child: Scaffold( appBar: AppBar( centerTitle: false, title: const Text('X'), ), // A drawer causes a leading hamburger. drawer: const Drawer(), ), ), ), ); expect(tester.getTopRight(find.text('X')).dx, 800.0 - 72.0); }); testWidgets('AppBar centerTitle:false title overflow OK', (WidgetTester tester) async { // The app bar's title should be constrained to fit within the available space // between the leading and actions widgets. final Key titleKey = UniqueKey(); Widget leading = Container(); List<Widget> actions; Widget buildApp() { return MaterialApp( home: Scaffold( appBar: AppBar( leading: leading, centerTitle: false, title: Container( key: titleKey, constraints: BoxConstraints.loose(const Size(1000.0, 1000.0)), ), actions: actions, ), ), ); } await tester.pumpWidget(buildApp()); final Finder title = find.byKey(titleKey); expect(tester.getTopLeft(title).dx, 72.0); expect(tester.getSize(title).width, equals( 800.0 // Screen width. - 56.0 // Leading button width. - 16.0 // Leading button to title padding. - 16.0)); // Title right side padding. actions = <Widget>[ const SizedBox(width: 100.0), const SizedBox(width: 100.0), ]; await tester.pumpWidget(buildApp()); expect(tester.getTopLeft(title).dx, 72.0); // The title shrinks by 200.0 to allow for the actions widgets. expect(tester.getSize(title).width, equals( 800.0 // Screen width. - 56.0 // Leading button width. - 16.0 // Leading button to title padding. - 16.0 // Title to actions padding - 200.0)); // Actions' width. leading = Container(); // AppBar will constrain the width to 24.0 await tester.pumpWidget(buildApp()); expect(tester.getTopLeft(title).dx, 72.0); // Adding a leading widget shouldn't effect the title's size expect(tester.getSize(title).width, equals(800.0 - 56.0 - 16.0 - 16.0 - 200.0)); }); testWidgets('AppBar centerTitle:true title overflow OK (LTR)', (WidgetTester tester) async { // The app bar's title should be constrained to fit within the available space // between the leading and actions widgets. When it's also centered it may // also be start or end justified if it doesn't fit in the overall center. final Key titleKey = UniqueKey(); double titleWidth = 700.0; Widget leading = Container(); List<Widget> actions; Widget buildApp() { return MaterialApp( home: Scaffold( appBar: AppBar( leading: leading, centerTitle: true, title: Container( key: titleKey, constraints: BoxConstraints.loose(Size(titleWidth, 1000.0)), ), actions: actions, ), ), ); } // Centering a title with width 700 within the 800 pixel wide test widget // would mean that its start edge would have to be 50. The material spec says // that the start edge of the title must be atleast 72. await tester.pumpWidget(buildApp()); final Finder title = find.byKey(titleKey); expect(tester.getTopLeft(title).dx, 72.0); expect(tester.getSize(title).width, equals(700.0)); // Centering a title with width 620 within the 800 pixel wide test widget // would mean that its start edge would have to be 90. We reserve 72 // on the start and the padded actions occupy 96 on the end. That // leaves 632, so the title is end justified but its width isn't changed. await tester.pumpWidget(buildApp()); leading = null; titleWidth = 620.0; actions = <Widget>[ const SizedBox(width: 48.0), const SizedBox(width: 48.0), ]; await tester.pumpWidget(buildApp()); expect(tester.getTopLeft(title).dx, 800 - 620 - 48 - 48); expect(tester.getSize(title).width, equals(620.0)); }); testWidgets('AppBar centerTitle:true title overflow OK (RTL)', (WidgetTester tester) async { // The app bar's title should be constrained to fit within the available space // between the leading and actions widgets. When it's also centered it may // also be start or end justified if it doesn't fit in the overall center. final Key titleKey = UniqueKey(); double titleWidth = 700.0; Widget leading = Container(); List<Widget> actions; Widget buildApp() { return MaterialApp( home: Directionality( textDirection: TextDirection.rtl, child: Scaffold( appBar: AppBar( leading: leading, centerTitle: true, title: Container( key: titleKey, constraints: BoxConstraints.loose(Size(titleWidth, 1000.0)), ), actions: actions, ), ), ), ); } // Centering a title with width 700 within the 800 pixel wide test widget // would mean that its start edge would have to be 50. The material spec says // that the start edge of the title must be atleast 72. await tester.pumpWidget(buildApp()); final Finder title = find.byKey(titleKey); expect(tester.getTopRight(title).dx, 800.0 - 72.0); expect(tester.getSize(title).width, equals(700.0)); // Centering a title with width 620 within the 800 pixel wide test widget // would mean that its start edge would have to be 90. We reserve 72 // on the start and the padded actions occupy 96 on the end. That // leaves 632, so the title is end justified but its width isn't changed. await tester.pumpWidget(buildApp()); leading = null; titleWidth = 620.0; actions = <Widget>[ const SizedBox(width: 48.0), const SizedBox(width: 48.0), ]; await tester.pumpWidget(buildApp()); expect(tester.getTopRight(title).dx, 620 + 48 + 48); expect(tester.getSize(title).width, equals(620.0)); }); testWidgets('AppBar with no Scaffold', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( home: SizedBox( height: kToolbarHeight, child: AppBar( leading: const Text('L'), title: const Text('No Scaffold'), actions: const <Widget>[Text('A1'), Text('A2')], ), ), ), ); expect(find.text('L'), findsOneWidget); expect(find.text('No Scaffold'), findsOneWidget); expect(find.text('A1'), findsOneWidget); expect(find.text('A2'), findsOneWidget); }); testWidgets('AppBar render at zero size', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( home: Center( child: Container( height: 0.0, width: 0.0, child: Scaffold( appBar: AppBar( title: const Text('X'), ), ), ), ), ), ); final Finder title = find.text('X'); expect(tester.getSize(title).isEmpty, isTrue); }); testWidgets('AppBar actions are vertically centered', (WidgetTester tester) async { final UniqueKey appBarKey = UniqueKey(); final UniqueKey leadingKey = UniqueKey(); final UniqueKey titleKey = UniqueKey(); final UniqueKey action0Key = UniqueKey(); final UniqueKey action1Key = UniqueKey(); await tester.pumpWidget( MaterialApp( home: Scaffold( appBar: AppBar( key: appBarKey, leading: SizedBox(key: leadingKey, height: 50.0), title: SizedBox(key: titleKey, height: 40.0), actions: <Widget>[ SizedBox(key: action0Key, height: 20.0), SizedBox(key: action1Key, height: 30.0), ], ), ), ), ); // The vertical center of the widget with key, in global coordinates. double yCenter(Key key) => tester.getCenter(find.byKey(key)).dy; expect(yCenter(appBarKey), equals(yCenter(leadingKey))); expect(yCenter(appBarKey), equals(yCenter(titleKey))); expect(yCenter(appBarKey), equals(yCenter(action0Key))); expect(yCenter(appBarKey), equals(yCenter(action1Key))); }); testWidgets('leading button extends to edge and is square', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( theme: ThemeData(platform: TargetPlatform.android), home: Scaffold( appBar: AppBar( title: const Text('X'), ), drawer: Column(), // Doesn't really matter. Triggers a hamburger regardless. ), ), ); final Finder hamburger = find.byTooltip('Open navigation menu'); expect(tester.getTopLeft(hamburger), const Offset(0.0, 0.0)); expect(tester.getSize(hamburger), const Size(56.0, 56.0)); }); testWidgets('test action is 4dp from edge and 48dp min', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( theme: ThemeData(platform: TargetPlatform.android), home: Scaffold( appBar: AppBar( title: const Text('X'), actions: const <Widget> [ IconButton( icon: Icon(Icons.share), onPressed: null, tooltip: 'Share', iconSize: 20.0, ), IconButton( icon: Icon(Icons.add), onPressed: null, tooltip: 'Add', iconSize: 60.0, ), ], ), ), ), ); final Finder addButton = find.byTooltip('Add'); expect(tester.getTopRight(addButton), const Offset(800.0, 0.0)); // It's still the size it was plus the 2 * 8dp padding from IconButton. expect(tester.getSize(addButton), const Size(60.0 + 2 * 8.0, 56.0)); final Finder shareButton = find.byTooltip('Share'); // The 20dp icon is expanded to fill the IconButton's touch target to 48dp. expect(tester.getSize(shareButton), const Size(48.0, 56.0)); }); testWidgets('SliverAppBar default configuration', (WidgetTester tester) async { await tester.pumpWidget(buildSliverAppBarApp( floating: false, pinned: false, expandedHeight: null, )); final ScrollController controller = primaryScrollController(tester); expect(controller.offset, 0.0); expect(find.byType(SliverAppBar), findsOneWidget); final double initialAppBarHeight = appBarHeight(tester); final double initialTabBarHeight = tabBarHeight(tester); // Scroll the not-pinned appbar partially out of view controller.jumpTo(50.0); await tester.pump(); expect(find.byType(SliverAppBar), findsOneWidget); expect(appBarHeight(tester), initialAppBarHeight); expect(tabBarHeight(tester), initialTabBarHeight); // Scroll the not-pinned appbar out of view controller.jumpTo(600.0); await tester.pump(); expect(find.byType(SliverAppBar), findsNothing); expect(appBarHeight(tester), initialAppBarHeight); expect(tabBarHeight(tester), initialTabBarHeight); // Scroll the not-pinned appbar back into view controller.jumpTo(0.0); await tester.pump(); expect(find.byType(SliverAppBar), findsOneWidget); expect(appBarHeight(tester), initialAppBarHeight); expect(tabBarHeight(tester), initialTabBarHeight); }); testWidgets('SliverAppBar expandedHeight, pinned', (WidgetTester tester) async { await tester.pumpWidget(buildSliverAppBarApp( floating: false, pinned: true, expandedHeight: 128.0, )); final ScrollController controller = primaryScrollController(tester); expect(controller.offset, 0.0); expect(find.byType(SliverAppBar), findsOneWidget); expect(appBarHeight(tester), 128.0); const double initialAppBarHeight = 128.0; final double initialTabBarHeight = tabBarHeight(tester); // Scroll the not-pinned appbar, collapsing the expanded height. At this // point both the toolbar and the tabbar are visible. controller.jumpTo(600.0); await tester.pump(); expect(find.byType(SliverAppBar), findsOneWidget); expect(tabBarHeight(tester), initialTabBarHeight); expect(appBarHeight(tester), lessThan(initialAppBarHeight)); expect(appBarHeight(tester), greaterThan(initialTabBarHeight)); // Scroll the not-pinned appbar back into view controller.jumpTo(0.0); await tester.pump(); expect(find.byType(SliverAppBar), findsOneWidget); expect(appBarHeight(tester), initialAppBarHeight); expect(tabBarHeight(tester), initialTabBarHeight); }); testWidgets('SliverAppBar expandedHeight, pinned and floating', (WidgetTester tester) async { await tester.pumpWidget(buildSliverAppBarApp( floating: true, pinned: true, expandedHeight: 128.0, )); final ScrollController controller = primaryScrollController(tester); expect(controller.offset, 0.0); expect(find.byType(SliverAppBar), findsOneWidget); expect(appBarHeight(tester), 128.0); const double initialAppBarHeight = 128.0; final double initialTabBarHeight = tabBarHeight(tester); // Scroll the floating-pinned appbar, collapsing the expanded height. At this // point only the tabBar is visible. controller.jumpTo(600.0); await tester.pump(); expect(find.byType(SliverAppBar), findsOneWidget); expect(tabBarHeight(tester), initialTabBarHeight); expect(appBarHeight(tester), lessThan(initialAppBarHeight)); expect(appBarHeight(tester), initialTabBarHeight); // Scroll the floating-pinned appbar back into view controller.jumpTo(0.0); await tester.pump(); expect(find.byType(SliverAppBar), findsOneWidget); expect(appBarHeight(tester), initialAppBarHeight); expect(tabBarHeight(tester), initialTabBarHeight); }); testWidgets('SliverAppBar expandedHeight, floating with snap:true', (WidgetTester tester) async { await tester.pumpWidget(buildSliverAppBarApp( floating: true, pinned: false, snap: true, expandedHeight: 128.0, )); expect(find.byType(SliverAppBar), findsOneWidget); expect(appBarTop(tester), 0.0); expect(appBarHeight(tester), 128.0); expect(appBarBottom(tester), 128.0); // Scroll to the middle of the list. The (floating) appbar is no longer visible. final ScrollPosition position = tester.state<ScrollableState>(find.byType(Scrollable)).position; position.jumpTo(256.00); await tester.pumpAndSettle(); expect(find.byType(SliverAppBar), findsNothing); expect(appBarTop(tester), lessThanOrEqualTo(-128.0)); // Drag the scrollable up and down. The app bar should not snap open, its // height should just track the drag offset. TestGesture gesture = await tester.startGesture(const Offset(50.0, 256.0)); await gesture.moveBy(const Offset(0.0, 128.0)); // drag the appbar all the way open await tester.pump(); expect(appBarTop(tester), 0.0); expect(appBarHeight(tester), 128.0); await gesture.moveBy(const Offset(0.0, -50.0)); await tester.pump(); expect(appBarBottom(tester), 78.0); // 78 == 128 - 50 // Trigger the snap open animation: drag down and release await gesture.moveBy(const Offset(0.0, 10.0)); await gesture.up(); // Now verify that the appbar is animating open await tester.pump(); await tester.pump(const Duration(milliseconds: 50)); double bottom = appBarBottom(tester); expect(bottom, greaterThan(88.0)); // 88 = 78 + 10 await tester.pump(); await tester.pump(const Duration(milliseconds: 50)); expect(appBarBottom(tester), greaterThan(bottom)); // The animation finishes when the appbar is full height. await tester.pumpAndSettle(); expect(appBarHeight(tester), 128.0); // Now that the app bar is open, perform the same drag scenario // in reverse: drag the appbar up and down and then trigger the // snap closed animation. gesture = await tester.startGesture(const Offset(50.0, 256.0)); await gesture.moveBy(const Offset(0.0, -128.0)); // drag the appbar closed await tester.pump(); expect(appBarBottom(tester), 0.0); await gesture.moveBy(const Offset(0.0, 100.0)); await tester.pump(); expect(appBarBottom(tester), 100.0); // Trigger the snap close animation: drag upwards and release await gesture.moveBy(const Offset(0.0, -10.0)); await gesture.up(); // Now verify that the appbar is animating closed await tester.pump(); await tester.pump(const Duration(milliseconds: 50)); bottom = appBarBottom(tester); expect(bottom, lessThan(90.0)); await tester.pump(); await tester.pump(const Duration(milliseconds: 50)); expect(appBarBottom(tester), lessThan(bottom)); // The animation finishes when the appbar is off screen. await tester.pumpAndSettle(); expect(appBarTop(tester), lessThanOrEqualTo(0.0)); expect(appBarBottom(tester), lessThanOrEqualTo(0.0)); }); testWidgets('SliverAppBar expandedHeight, floating and pinned with snap:true', (WidgetTester tester) async { await tester.pumpWidget(buildSliverAppBarApp( floating: true, pinned: true, snap: true, expandedHeight: 128.0, )); expect(find.byType(SliverAppBar), findsOneWidget); expect(appBarTop(tester), 0.0); expect(appBarHeight(tester), 128.0); expect(appBarBottom(tester), 128.0); // Scroll to the middle of the list. The only the tab bar is visible // because this is a pinned appbar. final ScrollPosition position = tester.state<ScrollableState>(find.byType(Scrollable)).position; position.jumpTo(256.0); await tester.pumpAndSettle(); expect(find.byType(SliverAppBar), findsOneWidget); expect(appBarTop(tester), 0.0); expect(appBarHeight(tester), kTextTabBarHeight); // Drag the scrollable up and down. The app bar should not snap open, the // bottof of the appbar should just track the drag offset. TestGesture gesture = await tester.startGesture(const Offset(50.0, 200.0)); await gesture.moveBy(const Offset(0.0, 100.0)); await tester.pump(); expect(appBarHeight(tester), 100.0); await gesture.moveBy(const Offset(0.0, -25.0)); await tester.pump(); expect(appBarHeight(tester), 75.0); // Trigger the snap animation: drag down and release await gesture.moveBy(const Offset(0.0, 10.0)); await gesture.up(); // Now verify that the appbar is animating open await tester.pump(); await tester.pump(const Duration(milliseconds: 50)); final double height = appBarHeight(tester); expect(height, greaterThan(85.0)); expect(height, lessThan(128.0)); await tester.pump(); await tester.pump(const Duration(milliseconds: 50)); expect(appBarHeight(tester), greaterThan(height)); expect(appBarHeight(tester), lessThan(128.0)); // The animation finishes when the appbar is fully expanded await tester.pumpAndSettle(); expect(appBarTop(tester), 0.0); expect(appBarHeight(tester), 128.0); expect(appBarBottom(tester), 128.0); // Now that the appbar is fully expanded, Perform the same drag // scenario in reverse: drag the appbar up and down and then trigger // the snap closed animation. gesture = await tester.startGesture(const Offset(50.0, 256.0)); await gesture.moveBy(const Offset(0.0, -128.0)); await tester.pump(); expect(appBarBottom(tester), kTextTabBarHeight); await gesture.moveBy(const Offset(0.0, 100.0)); await tester.pump(); expect(appBarBottom(tester), 100.0); // Trigger the snap close animation: drag upwards and release await gesture.moveBy(const Offset(0.0, -10.0)); await gesture.up(); // Now verify that the appbar is animating closed await tester.pump(); await tester.pump(const Duration(milliseconds: 50)); final double bottom = appBarBottom(tester); expect(bottom, lessThan(90.0)); await tester.pump(); await tester.pump(const Duration(milliseconds: 50)); expect(appBarBottom(tester), lessThan(bottom)); // The animation finishes when the appbar shrinks back to its pinned height await tester.pumpAndSettle(); expect(appBarTop(tester), lessThanOrEqualTo(0.0)); expect(appBarBottom(tester), kTextTabBarHeight); }); testWidgets('AppBar dimensions, with and without bottom, primary', (WidgetTester tester) async { const MediaQueryData topPadding100 = MediaQueryData(padding: EdgeInsets.only(top: 100.0)); await tester.pumpWidget( Localizations( locale: const Locale('en', 'US'), delegates: const <LocalizationsDelegate<dynamic>>[ DefaultMaterialLocalizations.delegate, DefaultWidgetsLocalizations.delegate, ], child: Directionality( textDirection: TextDirection.ltr, child: MediaQuery( data: topPadding100, child: Scaffold( primary: false, appBar: AppBar(), ), ), ), )); expect(appBarTop(tester), 0.0); expect(appBarHeight(tester), kToolbarHeight); await tester.pumpWidget( Localizations( locale: const Locale('en', 'US'), delegates: const <LocalizationsDelegate<dynamic>>[ DefaultMaterialLocalizations.delegate, DefaultWidgetsLocalizations.delegate, ], child: Directionality( textDirection: TextDirection.ltr, child: MediaQuery( data: topPadding100, child: Scaffold( primary: true, appBar: AppBar(title: const Text('title')), ), ), ), )); expect(appBarTop(tester), 0.0); expect(tester.getTopLeft(find.text('title')).dy, greaterThan(100.0)); expect(appBarHeight(tester), kToolbarHeight + 100.0); await tester.pumpWidget( Localizations( locale: const Locale('en', 'US'), delegates: const <LocalizationsDelegate<dynamic>>[ DefaultMaterialLocalizations.delegate, DefaultWidgetsLocalizations.delegate, ], child: Directionality( textDirection: TextDirection.ltr, child: MediaQuery( data: topPadding100, child: Scaffold( primary: false, appBar: AppBar( bottom: PreferredSize( preferredSize: const Size.fromHeight(200.0), child: Container(), ), ), ), ), ), )); expect(appBarTop(tester), 0.0); expect(appBarHeight(tester), kToolbarHeight + 200.0); await tester.pumpWidget( Localizations( locale: const Locale('en', 'US'), delegates: const <LocalizationsDelegate<dynamic>>[ DefaultMaterialLocalizations.delegate, DefaultWidgetsLocalizations.delegate, ], child: Directionality( textDirection: TextDirection.ltr, child: MediaQuery( data: topPadding100, child: Scaffold( primary: true, appBar: AppBar( bottom: PreferredSize( preferredSize: const Size.fromHeight(200.0), child: Container(), ), ), ), ), ), )); expect(appBarTop(tester), 0.0); expect(appBarHeight(tester), kToolbarHeight + 100.0 + 200.0); await tester.pumpWidget( Localizations( locale: const Locale('en', 'US'), delegates: const <LocalizationsDelegate<dynamic>>[ DefaultMaterialLocalizations.delegate, DefaultWidgetsLocalizations.delegate, ], child: Directionality( textDirection: TextDirection.ltr, child: MediaQuery( data: topPadding100, child: AppBar( primary: false, title: const Text('title'), ), ), ), ), ); expect(appBarTop(tester), 0.0); expect(tester.getTopLeft(find.text('title')).dy, lessThan(100.0)); }); testWidgets('AppBar updates when you add a drawer', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( home: Scaffold( appBar: AppBar(), ), ), ); expect(find.byIcon(Icons.menu), findsNothing); await tester.pumpWidget( MaterialApp( home: Scaffold( drawer: const Drawer(), appBar: AppBar(), ), ), ); expect(find.byIcon(Icons.menu), findsOneWidget); }); testWidgets('AppBar does not draw menu for drawer if automaticallyImplyLeading is false', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( home: Scaffold( drawer: const Drawer(), appBar: AppBar(automaticallyImplyLeading: false), ), ), ); expect(find.byIcon(Icons.menu), findsNothing); }); testWidgets('AppBar handles loose children 0', (WidgetTester tester) async { final GlobalKey key = GlobalKey(); await tester.pumpWidget( MaterialApp( home: Center( child: AppBar( leading: Placeholder(key: key), title: const Text('Abc'), actions: const <Widget>[ Placeholder(fallbackWidth: 10.0), Placeholder(fallbackWidth: 10.0), Placeholder(fallbackWidth: 10.0), ], ), ), ), ); expect(tester.renderObject<RenderBox>(find.byKey(key)).localToGlobal(Offset.zero), const Offset(0.0, 0.0)); expect(tester.renderObject<RenderBox>(find.byKey(key)).size, const Size(56.0, 56.0)); }); testWidgets('AppBar handles loose children 1', (WidgetTester tester) async { final GlobalKey key = GlobalKey(); await tester.pumpWidget( MaterialApp( home: Center( child: AppBar( leading: Placeholder(key: key), title: const Text('Abc'), actions: const <Widget>[ Placeholder(fallbackWidth: 10.0), Placeholder(fallbackWidth: 10.0), Placeholder(fallbackWidth: 10.0), ], flexibleSpace: DecoratedBox( decoration: BoxDecoration( gradient: LinearGradient( begin: const Alignment(0.0, -1.0), end: const Alignment(-0.04, 1.0), colors: <Color>[Colors.blue.shade500, Colors.blue.shade800], ), ), ), ), ), ), ); expect(tester.renderObject<RenderBox>(find.byKey(key)).localToGlobal(Offset.zero), const Offset(0.0, 0.0)); expect(tester.renderObject<RenderBox>(find.byKey(key)).size, const Size(56.0, 56.0)); }); testWidgets('AppBar handles loose children 2', (WidgetTester tester) async { final GlobalKey key = GlobalKey(); await tester.pumpWidget( MaterialApp( home: Center( child: AppBar( leading: Placeholder(key: key), title: const Text('Abc'), actions: const <Widget>[ Placeholder(fallbackWidth: 10.0), Placeholder(fallbackWidth: 10.0), Placeholder(fallbackWidth: 10.0), ], flexibleSpace: DecoratedBox( decoration: BoxDecoration( gradient: LinearGradient( begin: const Alignment(0.0, -1.0), end: const Alignment(-0.04, 1.0), colors: <Color>[Colors.blue.shade500, Colors.blue.shade800], ), ), ), bottom: PreferredSize( preferredSize: const Size(0.0, kToolbarHeight), child: Container( height: 50.0, padding: const EdgeInsets.all(4.0), child: const Placeholder( strokeWidth: 2.0, color: Color(0xFFFFFFFF), ), ), ), ), ), ), ); expect(tester.renderObject<RenderBox>(find.byKey(key)).localToGlobal(Offset.zero), const Offset(0.0, 0.0)); expect(tester.renderObject<RenderBox>(find.byKey(key)).size, const Size(56.0, 56.0)); }); testWidgets('AppBar handles loose children 3', (WidgetTester tester) async { final GlobalKey key = GlobalKey(); await tester.pumpWidget( MaterialApp( home: Center( child: AppBar( leading: Placeholder(key: key), title: const Text('Abc'), actions: const <Widget>[ Placeholder(fallbackWidth: 10.0), Placeholder(fallbackWidth: 10.0), Placeholder(fallbackWidth: 10.0), ], bottom: PreferredSize( preferredSize: const Size(0.0, kToolbarHeight), child: Container( height: 50.0, padding: const EdgeInsets.all(4.0), child: const Placeholder( strokeWidth: 2.0, color: Color(0xFFFFFFFF), ), ), ), ), ), ), ); expect(tester.renderObject<RenderBox>(find.byKey(key)).localToGlobal(Offset.zero), const Offset(0.0, 0.0)); expect(tester.renderObject<RenderBox>(find.byKey(key)).size, const Size(56.0, 56.0)); }); testWidgets('AppBar positioning of leading and trailing widgets with top padding', (WidgetTester tester) async { const MediaQueryData topPadding100 = MediaQueryData(padding: EdgeInsets.only(top: 100.0)); final Key leadingKey = UniqueKey(); final Key titleKey = UniqueKey(); final Key trailingKey = UniqueKey(); await tester.pumpWidget( Localizations( locale: const Locale('en', 'US'), delegates: const <LocalizationsDelegate<dynamic>>[ DefaultMaterialLocalizations.delegate, DefaultWidgetsLocalizations.delegate, ], child: Directionality( textDirection: TextDirection.rtl, child: MediaQuery( data: topPadding100, child: Scaffold( primary: false, appBar: AppBar( leading: Placeholder(key: leadingKey), title: Placeholder(key: titleKey), actions: <Widget>[ Placeholder(key: trailingKey) ], ), ), ), ), )); expect(tester.getTopLeft(find.byType(AppBar)), const Offset(0.0, 0.0)); expect(tester.getTopLeft(find.byKey(leadingKey)), const Offset(800.0 - 56.0, 100.0)); expect(tester.getTopLeft(find.byKey(titleKey)), const Offset(416.0, 100.0)); expect(tester.getTopLeft(find.byKey(trailingKey)), const Offset(0.0, 100.0)); }); testWidgets('SliverAppBar positioning of leading and trailing widgets with top padding', (WidgetTester tester) async { const MediaQueryData topPadding100 = MediaQueryData(padding: EdgeInsets.only(top: 100.0)); final Key leadingKey = UniqueKey(); final Key titleKey = UniqueKey(); final Key trailingKey = UniqueKey(); await tester.pumpWidget( Localizations( locale: const Locale('en', 'US'), delegates: const <LocalizationsDelegate<dynamic>>[ DefaultMaterialLocalizations.delegate, DefaultWidgetsLocalizations.delegate, ], child: Directionality( textDirection: TextDirection.rtl, child: MediaQuery( data: topPadding100, child: CustomScrollView( primary: true, slivers: <Widget>[ SliverAppBar( leading: Placeholder(key: leadingKey), title: Placeholder(key: titleKey), actions: <Widget>[ Placeholder(key: trailingKey) ], ), ], ), ), ), )); expect(tester.getTopLeft(find.byType(AppBar)), const Offset(0.0, 0.0)); expect(tester.getTopLeft(find.byKey(leadingKey)), const Offset(800.0 - 56.0, 100.0)); expect(tester.getTopLeft(find.byKey(titleKey)), const Offset(416.0, 100.0)); expect(tester.getTopLeft(find.byKey(trailingKey)), const Offset(0.0, 100.0)); }); testWidgets('SliverAppBar positioning of leading and trailing widgets with bottom padding', (WidgetTester tester) async { const MediaQueryData topPadding100 = MediaQueryData(padding: EdgeInsets.only(top: 100.0, bottom: 50.0)); final Key leadingKey = UniqueKey(); final Key titleKey = UniqueKey(); final Key trailingKey = UniqueKey(); await tester.pumpWidget( Localizations( locale: const Locale('en', 'US'), delegates: const <LocalizationsDelegate<dynamic>>[ DefaultMaterialLocalizations.delegate, DefaultWidgetsLocalizations.delegate, ], child: Directionality( textDirection: TextDirection.rtl, child: MediaQuery( data: topPadding100, child: CustomScrollView( primary: true, slivers: <Widget>[ SliverAppBar( leading: Placeholder(key: leadingKey), title: Placeholder(key: titleKey), actions: <Widget>[ Placeholder(key: trailingKey) ], ), ], ), ), ), )); expect(tester.getRect(find.byType(AppBar)), const Rect.fromLTRB(0.0, 0.0, 800.00, 100.0 + 56.0)); expect(tester.getRect(find.byKey(leadingKey)), const Rect.fromLTRB(800.0 - 56.0, 100.0, 800.0, 100.0 + 56.0)); expect(tester.getRect(find.byKey(trailingKey)), const Rect.fromLTRB(0.0, 100.0, 400.0, 100.0 + 56.0)); }); testWidgets('SliverAppBar provides correct semantics in LTR', (WidgetTester tester) async { final SemanticsTester semantics = SemanticsTester(tester); await tester.pumpWidget( MaterialApp( home: Center( child: AppBar( leading: const Text('Leading'), title: const Text('Title'), actions: const <Widget>[ Text('Action 1'), Text('Action 2'), Text('Action 3'), ], bottom: const PreferredSize( preferredSize: Size(0.0, kToolbarHeight), child: Text('Bottom'), ), ), ), ), ); expect(semantics, hasSemantics( TestSemantics.root( children: <TestSemantics>[ TestSemantics( children: <TestSemantics>[ TestSemantics( flags: <SemanticsFlag>[SemanticsFlag.scopesRoute], children: <TestSemantics>[ TestSemantics( children: <TestSemantics>[ TestSemantics( label: 'Leading', textDirection: TextDirection.ltr, ), TestSemantics( flags: <SemanticsFlag>[ SemanticsFlag.namesRoute, SemanticsFlag.isHeader, ], label: 'Title', textDirection: TextDirection.ltr, ), TestSemantics( label: 'Action 1', textDirection: TextDirection.ltr, ), TestSemantics( label: 'Action 2', textDirection: TextDirection.ltr, ), TestSemantics( label: 'Action 3', textDirection: TextDirection.ltr, ), TestSemantics( label: 'Bottom', textDirection: TextDirection.ltr, ), ], ), ], ), ], ), ], ), ignoreRect: true, ignoreTransform: true, ignoreId: true, )); semantics.dispose(); }); testWidgets('SliverAppBar provides correct semantics in RTL', (WidgetTester tester) async { final SemanticsTester semantics = SemanticsTester(tester); await tester.pumpWidget( MaterialApp( home: Semantics( textDirection: TextDirection.rtl, child: Directionality( textDirection: TextDirection.rtl, child: Center( child: AppBar( leading: const Text('Leading'), title: const Text('Title'), actions: const <Widget>[ Text('Action 1'), Text('Action 2'), Text('Action 3'), ], bottom: const PreferredSize( preferredSize: Size(0.0, kToolbarHeight), child: Text('Bottom'), ), ), ), ), ), ), ); expect(semantics, hasSemantics( TestSemantics.root( children: <TestSemantics>[ TestSemantics( children: <TestSemantics>[ TestSemantics( flags: <SemanticsFlag>[SemanticsFlag.scopesRoute], children: <TestSemantics>[ TestSemantics( textDirection: TextDirection.rtl, children: <TestSemantics>[ TestSemantics( children: <TestSemantics>[ TestSemantics( label: 'Leading', textDirection: TextDirection.rtl, ), TestSemantics( flags: <SemanticsFlag>[ SemanticsFlag.namesRoute, SemanticsFlag.isHeader, ], label: 'Title', textDirection: TextDirection.rtl, ), TestSemantics( label: 'Action 1', textDirection: TextDirection.rtl, ), TestSemantics( label: 'Action 2', textDirection: TextDirection.rtl, ), TestSemantics( label: 'Action 3', textDirection: TextDirection.rtl, ), TestSemantics( label: 'Bottom', textDirection: TextDirection.rtl, ), ], ), ], ), ], ), ], ), ], ), ignoreRect: true, ignoreTransform: true, ignoreId: true, )); semantics.dispose(); }); testWidgets('AppBar draws a light system bar for a dark background', (WidgetTester tester) async { final ThemeData darkTheme = ThemeData.dark(); await tester.pumpWidget(MaterialApp( theme: darkTheme, home: Scaffold( appBar: AppBar(title: const Text('test')), ), )); expect(darkTheme.primaryColorBrightness, Brightness.dark); expect(SystemChrome.latestStyle, const SystemUiOverlayStyle( statusBarBrightness: Brightness.dark, statusBarIconBrightness: Brightness.light, )); }); testWidgets('AppBar draws a dark system bar for a light background', (WidgetTester tester) async { final ThemeData lightTheme = ThemeData(primaryColor: Colors.white); await tester.pumpWidget(MaterialApp( theme: lightTheme, home: Scaffold( appBar: AppBar(title: const Text('test')), ), )); expect(lightTheme.primaryColorBrightness, Brightness.light); expect(SystemChrome.latestStyle, const SystemUiOverlayStyle( statusBarBrightness: Brightness.light, statusBarIconBrightness: Brightness.dark, )); }); testWidgets('Changing SliverAppBar snap from true to false', (WidgetTester tester) async { // Regression test for https://github.com/flutter/flutter/issues/17598 const double appBarHeight = 256.0; bool snap = true; await tester.pumpWidget( MaterialApp( home: StatefulBuilder( builder: (BuildContext context, StateSetter setState) { return Scaffold( body: CustomScrollView( slivers: <Widget>[ SliverAppBar( expandedHeight: appBarHeight, pinned: false, floating: true, snap: snap, actions: <Widget>[ FlatButton( child: const Text('snap=false'), onPressed: () { setState(() { snap = false; }); }, ), ], flexibleSpace: FlexibleSpaceBar( background: Container( height: appBarHeight, color: Colors.orange, ), ), ), SliverList( delegate: SliverChildListDelegate( <Widget>[ Container(height: 1200.0, color: Colors.teal), ], ), ), ], ), ); }, ), ), ); TestGesture gesture = await tester.startGesture(const Offset(50.0, 400.0)); await gesture.moveBy(const Offset(0.0, -100.0)); await gesture.up(); await tester.tap(find.text('snap=false')); await tester.pumpAndSettle(); gesture = await tester.startGesture(const Offset(50.0, 400.0)); await gesture.moveBy(const Offset(0.0, -100.0)); await gesture.up(); await tester.pump(); }); testWidgets('AppBar shape default', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( home: AppBar( leading: const Text('L'), title: const Text('No Scaffold'), actions: const <Widget>[Text('A1'), Text('A2')], ), ), ); final Finder appBarFinder = find.byType(AppBar); AppBar getAppBarWidget(Finder finder) => tester.widget<AppBar>(finder); expect(getAppBarWidget(appBarFinder).shape, null); final Finder materialFinder = find.byType(Material); Material getMaterialWidget(Finder finder) => tester.widget<Material>(finder); expect(getMaterialWidget(materialFinder).shape, null); }); testWidgets('AppBar with shape', (WidgetTester tester) async { const RoundedRectangleBorder roundedRectangleBorder = RoundedRectangleBorder( borderRadius: BorderRadius.all(Radius.circular(15.0)) ); await tester.pumpWidget( MaterialApp( home: AppBar( leading: const Text('L'), title: const Text('No Scaffold'), actions: const <Widget>[Text('A1'), Text('A2')], shape: roundedRectangleBorder, ), ), ); final Finder appBarFinder = find.byType(AppBar); AppBar getAppBarWidget(Finder finder) => tester.widget<AppBar>(finder); expect(getAppBarWidget(appBarFinder).shape, roundedRectangleBorder); final Finder materialFinder = find.byType(Material); Material getMaterialWidget(Finder finder) => tester.widget<Material>(finder); expect(getMaterialWidget(materialFinder).shape, roundedRectangleBorder); }); testWidgets('SliverAppBar shape default', (WidgetTester tester) async { await tester.pumpWidget( const MaterialApp( home: CustomScrollView( slivers: <Widget>[ SliverAppBar( leading: Text('L'), title: Text('No Scaffold'), actions: <Widget>[Text('A1'), Text('A2')], ), ], ), ), ); final Finder sliverAppBarFinder = find.byType(SliverAppBar); SliverAppBar getSliverAppBarWidget(Finder finder) => tester.widget<SliverAppBar>(finder); expect(getSliverAppBarWidget(sliverAppBarFinder).shape, null); final Finder materialFinder = find.byType(Material); Material getMaterialWidget(Finder finder) => tester.widget<Material>(finder); expect(getMaterialWidget(materialFinder).shape, null); }); testWidgets('SliverAppBar with shape', (WidgetTester tester) async { const RoundedRectangleBorder roundedRectangleBorder = RoundedRectangleBorder( borderRadius: BorderRadius.all(Radius.circular(15.0)), ); await tester.pumpWidget( const MaterialApp( home: CustomScrollView( slivers: <Widget>[ SliverAppBar( leading: Text('L'), title: Text('No Scaffold'), actions: <Widget>[Text('A1'), Text('A2')], shape: roundedRectangleBorder, ), ], ), ), ); final Finder sliverAppBarFinder = find.byType(SliverAppBar); SliverAppBar getSliverAppBarWidget(Finder finder) => tester.widget<SliverAppBar>(finder); expect(getSliverAppBarWidget(sliverAppBarFinder).shape, roundedRectangleBorder); final Finder materialFinder = find.byType(Material); Material getMaterialWidget(Finder finder) => tester.widget<Material>(finder); expect(getMaterialWidget(materialFinder).shape, roundedRectangleBorder); }); }