3845 lines
130 KiB
Dart
3845 lines
130 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/gestures.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/physics.dart';
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import 'package:flutter/rendering.dart';
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import 'package:flutter_test/flutter_test.dart';
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import '../rendering/mock_canvas.dart';
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import '../rendering/recording_canvas.dart';
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import '../widgets/semantics_tester.dart';
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import 'feedback_tester.dart';
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Widget boilerplate({ Widget? child, TextDirection textDirection = TextDirection.ltr }) {
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return Localizations(
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locale: const Locale('en', 'US'),
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delegates: const <LocalizationsDelegate<dynamic>>[
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DefaultMaterialLocalizations.delegate,
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DefaultWidgetsLocalizations.delegate,
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],
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child: Directionality(
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textDirection: textDirection,
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child: Material(
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child: child,
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),
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),
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);
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}
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class StateMarker extends StatefulWidget {
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const StateMarker({ Key? key, this.child }) : super(key: key);
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final Widget? child;
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@override
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StateMarkerState createState() => StateMarkerState();
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}
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class StateMarkerState extends State<StateMarker> {
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String? marker;
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@override
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Widget build(BuildContext context) {
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if (widget.child != null)
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return widget.child!;
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return Container();
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}
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}
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class AlwaysKeepAliveWidget extends StatefulWidget {
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const AlwaysKeepAliveWidget({ Key? key}) : super(key: key);
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static String text = 'AlwaysKeepAlive';
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@override
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AlwaysKeepAliveState createState() => AlwaysKeepAliveState();
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}
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class AlwaysKeepAliveState extends State<AlwaysKeepAliveWidget>
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with AutomaticKeepAliveClientMixin {
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@override
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bool get wantKeepAlive => true;
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@override
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Widget build(BuildContext context) {
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super.build(context);
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return Text(AlwaysKeepAliveWidget.text);
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}
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}
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class _NestedTabBarContainer extends StatelessWidget {
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const _NestedTabBarContainer({
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this.tabController,
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});
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final TabController? tabController;
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@override
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Widget build(BuildContext context) {
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return Container(
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color: Colors.blue,
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child: Column(
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children: <Widget>[
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TabBar(
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controller: tabController,
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tabs: const <Tab>[
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Tab(text: 'Yellow'),
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Tab(text: 'Grey'),
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],
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),
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Expanded(
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flex: 1,
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child: TabBarView(
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controller: tabController,
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children: <Widget>[
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Container(color: Colors.yellow),
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Container(color: Colors.grey),
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],
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),
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),
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],
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),
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);
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}
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}
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Widget buildFrame({
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Key? tabBarKey,
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required List<String> tabs,
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required String value,
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bool isScrollable = false,
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Color? indicatorColor,
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}) {
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return boilerplate(
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child: DefaultTabController(
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initialIndex: tabs.indexOf(value),
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length: tabs.length,
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child: TabBar(
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key: tabBarKey,
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tabs: tabs.map<Widget>((String tab) => Tab(text: tab)).toList(),
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isScrollable: isScrollable,
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indicatorColor: indicatorColor,
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),
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),
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);
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}
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typedef TabControllerFrameBuilder = Widget Function(BuildContext context, TabController controller);
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class TabControllerFrame extends StatefulWidget {
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const TabControllerFrame({
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Key? key,
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required this.length,
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this.initialIndex = 0,
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required this.builder,
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}) : super(key: key);
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final int length;
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final int initialIndex;
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final TabControllerFrameBuilder builder;
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@override
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TabControllerFrameState createState() => TabControllerFrameState();
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}
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class TabControllerFrameState extends State<TabControllerFrame> with SingleTickerProviderStateMixin {
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late TabController _controller;
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@override
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void initState() {
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super.initState();
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_controller = TabController(
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vsync: this,
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length: widget.length,
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initialIndex: widget.initialIndex,
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);
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}
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@override
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void dispose() {
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_controller.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return widget.builder(context, _controller);
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}
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}
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Widget buildLeftRightApp({required List<String> tabs, required String value, bool automaticIndicatorColorAdjustment = true}) {
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return MaterialApp(
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theme: ThemeData(platform: TargetPlatform.android),
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home: DefaultTabController(
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initialIndex: tabs.indexOf(value),
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length: tabs.length,
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child: Scaffold(
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appBar: AppBar(
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title: const Text('tabs'),
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bottom: TabBar(
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tabs: tabs.map<Widget>((String tab) => Tab(text: tab)).toList(),
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automaticIndicatorColorAdjustment: automaticIndicatorColorAdjustment,
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),
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),
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body: const TabBarView(
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children: <Widget>[
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Center(child: Text('LEFT CHILD')),
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Center(child: Text('RIGHT CHILD')),
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],
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),
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),
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),
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);
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}
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class TabIndicatorRecordingCanvas extends TestRecordingCanvas {
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TabIndicatorRecordingCanvas(this.indicatorColor);
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final Color indicatorColor;
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late Rect indicatorRect;
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@override
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void drawLine(Offset p1, Offset p2, Paint paint) {
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// Assuming that the indicatorWeight is 2.0, the default.
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const double indicatorWeight = 2.0;
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if (paint.color == indicatorColor)
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indicatorRect = Rect.fromPoints(p1, p2).inflate(indicatorWeight / 2.0);
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}
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}
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class TestScrollPhysics extends ScrollPhysics {
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const TestScrollPhysics({ ScrollPhysics? parent }) : super(parent: parent);
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@override
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TestScrollPhysics applyTo(ScrollPhysics? ancestor) {
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return TestScrollPhysics(parent: buildParent(ancestor));
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}
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@override
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double applyPhysicsToUserOffset(ScrollMetrics position, double offset) {
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return offset == 10 ? 20 : offset;
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}
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static final SpringDescription _kDefaultSpring = SpringDescription.withDampingRatio(
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mass: 0.5,
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stiffness: 500.0,
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ratio: 1.1,
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);
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@override
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SpringDescription get spring => _kDefaultSpring;
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}
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void main() {
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setUp(() {
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debugResetSemanticsIdCounter();
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});
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testWidgets('Tab sizing - icon', (WidgetTester tester) async {
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await tester.pumpWidget(
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const MaterialApp(home: Center(child: Material(child: Tab(icon: SizedBox(width: 10.0, height: 10.0))))),
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);
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expect(tester.getSize(find.byType(Tab)), const Size(10.0, 46.0));
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});
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testWidgets('Tab sizing - child', (WidgetTester tester) async {
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await tester.pumpWidget(
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const MaterialApp(home: Center(child: Material(child: Tab(child: SizedBox(width: 10.0, height: 10.0))))),
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);
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expect(tester.getSize(find.byType(Tab)), const Size(10.0, 46.0));
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});
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testWidgets('Tab sizing - text', (WidgetTester tester) async {
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await tester.pumpWidget(
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MaterialApp(theme: ThemeData(fontFamily: 'Ahem'), home: const Center(child: Material(child: Tab(text: 'x')))),
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);
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expect(tester.renderObject<RenderParagraph>(find.byType(RichText)).text.style!.fontFamily, 'Ahem');
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expect(tester.getSize(find.byType(Tab)), const Size(14.0, 46.0));
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});
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testWidgets('Tab sizing - icon and text', (WidgetTester tester) async {
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await tester.pumpWidget(
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MaterialApp(theme: ThemeData(fontFamily: 'Ahem'), home: const Center(child: Material(child: Tab(icon: SizedBox(width: 10.0, height: 10.0), text: 'x')))),
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);
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expect(tester.renderObject<RenderParagraph>(find.byType(RichText)).text.style!.fontFamily, 'Ahem');
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expect(tester.getSize(find.byType(Tab)), const Size(14.0, 72.0));
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});
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testWidgets('Tab sizing - icon, iconMargin and text', (WidgetTester tester) async {
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await tester.pumpWidget(
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MaterialApp(
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theme: ThemeData(fontFamily: 'Ahem'),
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home: const Center(
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child: Material(
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child: Tab(
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icon: SizedBox(
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width: 10.0,
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height: 10.0,
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),
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iconMargin: EdgeInsets.symmetric(
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horizontal: 100.0,
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),
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text: 'x',
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),
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),
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),
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),
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);
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expect(tester.renderObject<RenderParagraph>(find.byType(RichText)).text.style!.fontFamily, 'Ahem');
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expect(tester.getSize(find.byType(Tab)), const Size(210.0, 72.0));
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});
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testWidgets('Tab sizing - icon and child', (WidgetTester tester) async {
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await tester.pumpWidget(
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MaterialApp(theme: ThemeData(fontFamily: 'Ahem'), home: const Center(child: Material(child: Tab(icon: SizedBox(width: 10.0, height: 10.0), child: Text('x'))))),
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);
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expect(tester.renderObject<RenderParagraph>(find.byType(RichText)).text.style!.fontFamily, 'Ahem');
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expect(tester.getSize(find.byType(Tab)), const Size(14.0, 72.0));
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});
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testWidgets('Tab color - normal', (WidgetTester tester) async {
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final Widget tabBar = TabBar(tabs: const <Widget>[SizedBox.shrink()], controller: TabController(length: 1, vsync: tester));
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await tester.pumpWidget(
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MaterialApp(home: Material(child: tabBar)),
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);
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expect(find.byType(TabBar), paints..line(color: Colors.blue[500]));
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});
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testWidgets('Tab color - match', (WidgetTester tester) async {
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final Widget tabBar = TabBar(tabs: const <Widget>[SizedBox.shrink()], controller: TabController(length: 1, vsync: tester));
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await tester.pumpWidget(
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MaterialApp(home: Material(color: const Color(0xff2196f3), child: tabBar)),
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);
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expect(find.byType(TabBar), paints..line(color: Colors.white));
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});
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testWidgets('Tab color - transparency', (WidgetTester tester) async {
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final Widget tabBar = TabBar(tabs: const <Widget>[SizedBox.shrink()], controller: TabController(length: 1, vsync: tester));
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await tester.pumpWidget(
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MaterialApp(home: Material(type: MaterialType.transparency, child: tabBar)),
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);
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expect(find.byType(TabBar), paints..line(color: Colors.blue[500]));
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});
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testWidgets('TabBar tap selects tab', (WidgetTester tester) async {
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final List<String> tabs = <String>['A', 'B', 'C'];
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await tester.pumpWidget(buildFrame(tabs: tabs, value: 'C', isScrollable: false));
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expect(find.text('A'), findsOneWidget);
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expect(find.text('B'), findsOneWidget);
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expect(find.text('C'), findsOneWidget);
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final TabController controller = DefaultTabController.of(tester.element(find.text('A')))!;
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expect(controller, isNotNull);
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expect(controller.index, 2);
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expect(controller.previousIndex, 2);
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await tester.pumpWidget(buildFrame(tabs: tabs, value: 'C', isScrollable: false));
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await tester.tap(find.text('B'));
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await tester.pump();
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expect(controller.indexIsChanging, true);
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await tester.pump(const Duration(seconds: 1)); // finish the animation
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expect(controller.index, 1);
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expect(controller.previousIndex, 2);
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expect(controller.indexIsChanging, false);
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await tester.pumpWidget(buildFrame(tabs: tabs, value: 'C', isScrollable: false));
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await tester.tap(find.text('C'));
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await tester.pump();
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await tester.pump(const Duration(seconds: 1));
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expect(controller.index, 2);
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expect(controller.previousIndex, 1);
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await tester.pumpWidget(buildFrame(tabs: tabs, value: 'C', isScrollable: false));
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await tester.tap(find.text('A'));
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await tester.pump();
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await tester.pump(const Duration(seconds: 1));
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expect(controller.index, 0);
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expect(controller.previousIndex, 2);
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});
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testWidgets('Scrollable TabBar tap selects tab', (WidgetTester tester) async {
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final List<String> tabs = <String>['A', 'B', 'C'];
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await tester.pumpWidget(buildFrame(tabs: tabs, value: 'C', isScrollable: true));
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expect(find.text('A'), findsOneWidget);
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expect(find.text('B'), findsOneWidget);
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expect(find.text('C'), findsOneWidget);
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final TabController controller = DefaultTabController.of(tester.element(find.text('A')))!;
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expect(controller.index, 2);
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expect(controller.previousIndex, 2);
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await tester.tap(find.text('C'));
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await tester.pumpAndSettle();
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expect(controller.index, 2);
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await tester.tap(find.text('B'));
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await tester.pumpAndSettle();
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expect(controller.index, 1);
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await tester.tap(find.text('A'));
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await tester.pumpAndSettle();
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expect(controller.index, 0);
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});
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testWidgets('Scrollable TabBar tap centers selected tab', (WidgetTester tester) async {
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final List<String> tabs = <String>['AAAAAA', 'BBBBBB', 'CCCCCC', 'DDDDDD', 'EEEEEE', 'FFFFFF', 'GGGGGG', 'HHHHHH', 'IIIIII', 'JJJJJJ', 'KKKKKK', 'LLLLLL'];
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const Key tabBarKey = Key('TabBar');
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await tester.pumpWidget(buildFrame(tabs: tabs, value: 'AAAAAA', isScrollable: true, tabBarKey: tabBarKey));
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final TabController controller = DefaultTabController.of(tester.element(find.text('AAAAAA')))!;
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expect(controller, isNotNull);
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expect(controller.index, 0);
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expect(tester.getSize(find.byKey(tabBarKey)).width, equals(800.0));
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// The center of the FFFFFF item is to the right of the TabBar's center
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expect(tester.getCenter(find.text('FFFFFF')).dx, greaterThan(401.0));
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await tester.tap(find.text('FFFFFF'));
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await tester.pumpAndSettle();
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expect(controller.index, 5);
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// The center of the FFFFFF item is now at the TabBar's center
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expect(tester.getCenter(find.text('FFFFFF')).dx, moreOrLessEquals(400.0, epsilon: 1.0));
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});
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testWidgets('TabBar can be scrolled independent of the selection', (WidgetTester tester) async {
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final List<String> tabs = <String>['AAAA', 'BBBB', 'CCCC', 'DDDD', 'EEEE', 'FFFF', 'GGGG', 'HHHH', 'IIII', 'JJJJ', 'KKKK', 'LLLL'];
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const Key tabBarKey = Key('TabBar');
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await tester.pumpWidget(buildFrame(tabs: tabs, value: 'AAAA', isScrollable: true, tabBarKey: tabBarKey));
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final TabController controller = DefaultTabController.of(tester.element(find.text('AAAA')))!;
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expect(controller, isNotNull);
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expect(controller.index, 0);
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// Fling-scroll the TabBar to the left
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expect(tester.getCenter(find.text('HHHH')).dx, lessThan(700.0));
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await tester.fling(find.byKey(tabBarKey), const Offset(-200.0, 0.0), 10000.0);
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await tester.pump();
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await tester.pump(const Duration(seconds: 1)); // finish the scroll animation
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expect(tester.getCenter(find.text('HHHH')).dx, lessThan(500.0));
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// Scrolling the TabBar doesn't change the selection
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expect(controller.index, 0);
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});
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testWidgets('TabBarView maintains state', (WidgetTester tester) async {
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final List<String> tabs = <String>['AAAAAA', 'BBBBBB', 'CCCCCC', 'DDDDDD', 'EEEEEE'];
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String value = tabs[0];
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Widget builder() {
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return boilerplate(
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child: DefaultTabController(
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initialIndex: tabs.indexOf(value),
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length: tabs.length,
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child: TabBarView(
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children: tabs.map<Widget>((String name) {
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return StateMarker(
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child: Text(name),
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);
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}).toList(),
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),
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),
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);
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}
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StateMarkerState findStateMarkerState(String name) {
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return tester.state(find.widgetWithText(StateMarker, name, skipOffstage: false));
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}
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await tester.pumpWidget(builder());
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final TabController controller = DefaultTabController.of(tester.element(find.text('AAAAAA')))!;
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TestGesture gesture = await tester.startGesture(tester.getCenter(find.text(tabs[0])));
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await gesture.moveBy(const Offset(-600.0, 0.0));
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await tester.pump();
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expect(value, equals(tabs[0]));
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findStateMarkerState(tabs[1]).marker = 'marked';
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await gesture.up();
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await tester.pump();
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await tester.pump(const Duration(seconds: 1));
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value = tabs[controller.index];
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expect(value, equals(tabs[1]));
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await tester.pumpWidget(builder());
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expect(findStateMarkerState(tabs[1]).marker, equals('marked'));
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// Move to the third tab.
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gesture = await tester.startGesture(tester.getCenter(find.text(tabs[1])));
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await gesture.moveBy(const Offset(-600.0, 0.0));
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await gesture.up();
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await tester.pump();
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expect(findStateMarkerState(tabs[1]).marker, equals('marked'));
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await tester.pump(const Duration(seconds: 1));
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value = tabs[controller.index];
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expect(value, equals(tabs[2]));
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await tester.pumpWidget(builder());
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// The state is now gone.
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expect(find.text(tabs[1]), findsNothing);
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// Move back to the second tab.
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gesture = await tester.startGesture(tester.getCenter(find.text(tabs[2])));
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await gesture.moveBy(const Offset(600.0, 0.0));
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await tester.pump();
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final StateMarkerState markerState = findStateMarkerState(tabs[1]);
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expect(markerState.marker, isNull);
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markerState.marker = 'marked';
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await gesture.up();
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await tester.pump();
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await tester.pump(const Duration(seconds: 1));
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value = tabs[controller.index];
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expect(value, equals(tabs[1]));
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await tester.pumpWidget(builder());
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expect(findStateMarkerState(tabs[1]).marker, equals('marked'));
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});
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testWidgets('TabBar left/right fling', (WidgetTester tester) async {
|
|
final List<String> tabs = <String>['LEFT', 'RIGHT'];
|
|
|
|
await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT'));
|
|
expect(find.text('LEFT'), findsOneWidget);
|
|
expect(find.text('RIGHT'), findsOneWidget);
|
|
expect(find.text('LEFT CHILD'), findsOneWidget);
|
|
expect(find.text('RIGHT CHILD'), findsNothing);
|
|
|
|
final TabController controller = DefaultTabController.of(tester.element(find.text('LEFT')))!;
|
|
expect(controller.index, 0);
|
|
|
|
// Fling to the left, switch from the 'LEFT' tab to the 'RIGHT'
|
|
Offset flingStart = tester.getCenter(find.text('LEFT CHILD'));
|
|
await tester.flingFrom(flingStart, const Offset(-200.0, 0.0), 10000.0);
|
|
await tester.pumpAndSettle();
|
|
expect(controller.index, 1);
|
|
expect(find.text('LEFT CHILD'), findsNothing);
|
|
expect(find.text('RIGHT CHILD'), findsOneWidget);
|
|
|
|
// Fling to the right, switch back to the 'LEFT' tab
|
|
flingStart = tester.getCenter(find.text('RIGHT CHILD'));
|
|
await tester.flingFrom(flingStart, const Offset(200.0, 0.0), 10000.0);
|
|
await tester.pumpAndSettle();
|
|
expect(controller.index, 0);
|
|
expect(find.text('LEFT CHILD'), findsOneWidget);
|
|
expect(find.text('RIGHT CHILD'), findsNothing);
|
|
});
|
|
|
|
testWidgets('TabBar left/right fling reverse (1)', (WidgetTester tester) async {
|
|
final List<String> tabs = <String>['LEFT', 'RIGHT'];
|
|
|
|
await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT'));
|
|
expect(find.text('LEFT'), findsOneWidget);
|
|
expect(find.text('RIGHT'), findsOneWidget);
|
|
expect(find.text('LEFT CHILD'), findsOneWidget);
|
|
expect(find.text('RIGHT CHILD'), findsNothing);
|
|
|
|
final TabController controller = DefaultTabController.of(tester.element(find.text('LEFT')))!;
|
|
expect(controller.index, 0);
|
|
|
|
final Offset flingStart = tester.getCenter(find.text('LEFT CHILD'));
|
|
await tester.flingFrom(flingStart, const Offset(200.0, 0.0), 10000.0);
|
|
await tester.pump();
|
|
await tester.pump(const Duration(seconds: 1)); // finish the scroll animation
|
|
expect(controller.index, 0);
|
|
expect(find.text('LEFT CHILD'), findsOneWidget);
|
|
expect(find.text('RIGHT CHILD'), findsNothing);
|
|
});
|
|
|
|
testWidgets('TabBar left/right fling reverse (2)', (WidgetTester tester) async {
|
|
final List<String> tabs = <String>['LEFT', 'RIGHT'];
|
|
|
|
await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT'));
|
|
expect(find.text('LEFT'), findsOneWidget);
|
|
expect(find.text('RIGHT'), findsOneWidget);
|
|
expect(find.text('LEFT CHILD'), findsOneWidget);
|
|
expect(find.text('RIGHT CHILD'), findsNothing);
|
|
|
|
final TabController controller = DefaultTabController.of(tester.element(find.text('LEFT')))!;
|
|
expect(controller.index, 0);
|
|
|
|
final Offset flingStart = tester.getCenter(find.text('LEFT CHILD'));
|
|
await tester.flingFrom(flingStart, const Offset(-200.0, 0.0), 10000.0);
|
|
await tester.pump();
|
|
// this is similar to a test above, but that one does many more pumps
|
|
await tester.pump(const Duration(seconds: 1)); // finish the scroll animation
|
|
expect(controller.index, 1);
|
|
expect(find.text('LEFT CHILD'), findsNothing);
|
|
expect(find.text('RIGHT CHILD'), findsOneWidget);
|
|
});
|
|
|
|
// A regression test for https://github.com/flutter/flutter/issues/5095
|
|
testWidgets('TabBar left/right fling reverse (2)', (WidgetTester tester) async {
|
|
final List<String> tabs = <String>['LEFT', 'RIGHT'];
|
|
|
|
await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT'));
|
|
expect(find.text('LEFT'), findsOneWidget);
|
|
expect(find.text('RIGHT'), findsOneWidget);
|
|
expect(find.text('LEFT CHILD'), findsOneWidget);
|
|
expect(find.text('RIGHT CHILD'), findsNothing);
|
|
|
|
final TabController controller = DefaultTabController.of(tester.element(find.text('LEFT')))!;
|
|
expect(controller.index, 0);
|
|
|
|
final Offset flingStart = tester.getCenter(find.text('LEFT CHILD'));
|
|
final TestGesture gesture = await tester.startGesture(flingStart);
|
|
for (int index = 0; index > 50; index += 1) {
|
|
await gesture.moveBy(const Offset(-10.0, 0.0));
|
|
await tester.pump(const Duration(milliseconds: 1));
|
|
}
|
|
// End the fling by reversing direction. This should cause not cause
|
|
// a change to the selected tab, everything should just settle back to
|
|
// to where it started.
|
|
for (int index = 0; index > 50; index += 1) {
|
|
await gesture.moveBy(const Offset(10.0, 0.0));
|
|
await tester.pump(const Duration(milliseconds: 1));
|
|
}
|
|
await gesture.up();
|
|
await tester.pump();
|
|
await tester.pump(const Duration(seconds: 1)); // finish the scroll animation
|
|
expect(controller.index, 0);
|
|
expect(find.text('LEFT CHILD'), findsOneWidget);
|
|
expect(find.text('RIGHT CHILD'), findsNothing);
|
|
});
|
|
|
|
// A regression test for https://github.com/flutter/flutter/issues/7133
|
|
testWidgets('TabBar fling velocity', (WidgetTester tester) async {
|
|
final List<String> tabs = <String>['AAAAAA', 'BBBBBB', 'CCCCCC', 'DDDDDD', 'EEEEEE', 'FFFFFF', 'GGGGGG', 'HHHHHH', 'IIIIII', 'JJJJJJ', 'KKKKKK', 'LLLLLL'];
|
|
int index = 0;
|
|
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Align(
|
|
alignment: Alignment.topLeft,
|
|
child: SizedBox(
|
|
width: 300.0,
|
|
height: 200.0,
|
|
child: DefaultTabController(
|
|
length: tabs.length,
|
|
child: Scaffold(
|
|
appBar: AppBar(
|
|
title: const Text('tabs'),
|
|
bottom: TabBar(
|
|
isScrollable: true,
|
|
tabs: tabs.map<Widget>((String tab) => Tab(text: tab)).toList(),
|
|
),
|
|
),
|
|
body: TabBarView(
|
|
children: tabs.map<Widget>((String name) => Text('${index++}')).toList(),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
// After a small slow fling to the left, we expect the second item to still be visible.
|
|
await tester.fling(find.text('AAAAAA'), const Offset(-25.0, 0.0), 100.0);
|
|
await tester.pump();
|
|
await tester.pump(const Duration(seconds: 1)); // finish the scroll animation
|
|
final RenderBox box = tester.renderObject(find.text('BBBBBB'));
|
|
expect(box.localToGlobal(Offset.zero).dx, greaterThan(0.0));
|
|
});
|
|
|
|
testWidgets('TabController change notification', (WidgetTester tester) async {
|
|
final List<String> tabs = <String>['LEFT', 'RIGHT'];
|
|
|
|
await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT'));
|
|
final TabController controller = DefaultTabController.of(tester.element(find.text('LEFT')))!;
|
|
|
|
expect(controller, isNotNull);
|
|
expect(controller.index, 0);
|
|
|
|
late String value;
|
|
controller.addListener(() {
|
|
value = tabs[controller.index];
|
|
});
|
|
|
|
await tester.tap(find.text('RIGHT'));
|
|
await tester.pumpAndSettle();
|
|
expect(value, 'RIGHT');
|
|
|
|
await tester.tap(find.text('LEFT'));
|
|
await tester.pumpAndSettle();
|
|
expect(value, 'LEFT');
|
|
|
|
final Offset leftFlingStart = tester.getCenter(find.text('LEFT CHILD'));
|
|
await tester.flingFrom(leftFlingStart, const Offset(-200.0, 0.0), 10000.0);
|
|
await tester.pumpAndSettle();
|
|
expect(value, 'RIGHT');
|
|
|
|
final Offset rightFlingStart = tester.getCenter(find.text('RIGHT CHILD'));
|
|
await tester.flingFrom(rightFlingStart, const Offset(200.0, 0.0), 10000.0);
|
|
await tester.pumpAndSettle();
|
|
expect(value, 'LEFT');
|
|
});
|
|
|
|
testWidgets('Explicit TabController', (WidgetTester tester) async {
|
|
final List<String> tabs = <String>['LEFT', 'RIGHT'];
|
|
late TabController tabController;
|
|
|
|
Widget buildTabControllerFrame(BuildContext context, TabController controller) {
|
|
tabController = controller;
|
|
return MaterialApp(
|
|
theme: ThemeData(platform: TargetPlatform.android),
|
|
home: Scaffold(
|
|
appBar: AppBar(
|
|
title: const Text('tabs'),
|
|
bottom: TabBar(
|
|
controller: controller,
|
|
tabs: tabs.map<Widget>((String tab) => Tab(text: tab)).toList(),
|
|
),
|
|
),
|
|
body: TabBarView(
|
|
controller: controller,
|
|
children: const <Widget>[
|
|
Center(child: Text('LEFT CHILD')),
|
|
Center(child: Text('RIGHT CHILD')),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
await tester.pumpWidget(TabControllerFrame(
|
|
builder: buildTabControllerFrame,
|
|
length: tabs.length,
|
|
initialIndex: 1,
|
|
));
|
|
|
|
expect(find.text('LEFT'), findsOneWidget);
|
|
expect(find.text('RIGHT'), findsOneWidget);
|
|
expect(find.text('LEFT CHILD'), findsNothing);
|
|
expect(find.text('RIGHT CHILD'), findsOneWidget);
|
|
expect(tabController.index, 1);
|
|
expect(tabController.previousIndex, 1);
|
|
expect(tabController.indexIsChanging, false);
|
|
expect(tabController.animation!.value, 1.0);
|
|
expect(tabController.animation!.status, AnimationStatus.forward);
|
|
|
|
tabController.index = 0;
|
|
await tester.pump(const Duration(milliseconds: 500));
|
|
await tester.pump(const Duration(milliseconds: 500));
|
|
expect(find.text('LEFT CHILD'), findsOneWidget);
|
|
expect(find.text('RIGHT CHILD'), findsNothing);
|
|
|
|
tabController.index = 1;
|
|
await tester.pump(const Duration(milliseconds: 500));
|
|
await tester.pump(const Duration(milliseconds: 500));
|
|
expect(find.text('LEFT CHILD'), findsNothing);
|
|
expect(find.text('RIGHT CHILD'), findsOneWidget);
|
|
});
|
|
|
|
testWidgets('TabController listener resets index', (WidgetTester tester) async {
|
|
// This is a regression test for the scenario brought up here
|
|
// https://github.com/flutter/flutter/pull/7387#pullrequestreview-15630946
|
|
|
|
final List<String> tabs = <String>['A', 'B', 'C'];
|
|
late TabController tabController;
|
|
|
|
Widget buildTabControllerFrame(BuildContext context, TabController controller) {
|
|
tabController = controller;
|
|
return MaterialApp(
|
|
theme: ThemeData(platform: TargetPlatform.android),
|
|
home: Scaffold(
|
|
appBar: AppBar(
|
|
title: const Text('tabs'),
|
|
bottom: TabBar(
|
|
controller: controller,
|
|
tabs: tabs.map<Widget>((String tab) => Tab(text: tab)).toList(),
|
|
),
|
|
),
|
|
body: TabBarView(
|
|
controller: controller,
|
|
children: const <Widget>[
|
|
Center(child: Text('CHILD A')),
|
|
Center(child: Text('CHILD B')),
|
|
Center(child: Text('CHILD C')),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
await tester.pumpWidget(TabControllerFrame(
|
|
builder: buildTabControllerFrame,
|
|
length: tabs.length,
|
|
));
|
|
|
|
tabController.animation!.addListener(() {
|
|
if (tabController.animation!.status == AnimationStatus.forward)
|
|
tabController.index = 2;
|
|
expect(tabController.indexIsChanging, true);
|
|
});
|
|
|
|
expect(tabController.index, 0);
|
|
expect(tabController.indexIsChanging, false);
|
|
|
|
tabController.animateTo(1, duration: const Duration(milliseconds: 200), curve: Curves.linear);
|
|
await tester.pump();
|
|
await tester.pump(const Duration(milliseconds: 300));
|
|
|
|
expect(tabController.index, 2);
|
|
expect(tabController.indexIsChanging, false);
|
|
});
|
|
|
|
testWidgets('TabBarView child disposed during animation', (WidgetTester tester) async {
|
|
// This is a regression test for the scenario brought up here
|
|
// https://github.com/flutter/flutter/pull/7387#discussion_r95089191x
|
|
|
|
final List<String> tabs = <String>['LEFT', 'RIGHT'];
|
|
await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT'));
|
|
|
|
// Fling to the left, switch from the 'LEFT' tab to the 'RIGHT'
|
|
final Offset flingStart = tester.getCenter(find.text('LEFT CHILD'));
|
|
await tester.flingFrom(flingStart, const Offset(-200.0, 0.0), 10000.0);
|
|
await tester.pump();
|
|
await tester.pump(const Duration(seconds: 1)); // finish the scroll animation
|
|
});
|
|
|
|
testWidgets('TabBar unselectedLabelColor control test', (WidgetTester tester) async {
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: 2,
|
|
);
|
|
|
|
late Color firstColor;
|
|
late Color secondColor;
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: TabBar(
|
|
controller: controller,
|
|
labelColor: Colors.green[500],
|
|
unselectedLabelColor: Colors.blue[500],
|
|
tabs: <Widget>[
|
|
Builder(
|
|
builder: (BuildContext context) {
|
|
firstColor = IconTheme.of(context).color!;
|
|
return const Text('First');
|
|
},
|
|
),
|
|
Builder(
|
|
builder: (BuildContext context) {
|
|
secondColor = IconTheme.of(context).color!;
|
|
return const Text('Second');
|
|
},
|
|
),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(firstColor, equals(Colors.green[500]));
|
|
expect(secondColor, equals(Colors.blue[500]));
|
|
});
|
|
|
|
testWidgets('TabBarView page left and right test', (WidgetTester tester) async {
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: 2,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: TabBarView(
|
|
controller: controller,
|
|
children: const <Widget>[ Text('First'), Text('Second') ],
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(controller.index, equals(0));
|
|
|
|
TestGesture gesture = await tester.startGesture(const Offset(100.0, 100.0));
|
|
expect(controller.index, equals(0));
|
|
|
|
// Drag to the left and right, by less than the TabBarView's width.
|
|
// The selected index (controller.index) should not change.
|
|
await gesture.moveBy(const Offset(-100.0, 0.0));
|
|
await gesture.moveBy(const Offset(100.0, 0.0));
|
|
expect(controller.index, equals(0));
|
|
expect(find.text('First'), findsOneWidget);
|
|
expect(find.text('Second'), findsNothing);
|
|
|
|
// Drag more than the TabBarView's width to the right. This forces
|
|
// the selected index to change to 1.
|
|
await gesture.moveBy(const Offset(-500.0, 0.0));
|
|
await gesture.up();
|
|
await tester.pump(); // start the scroll animation
|
|
await tester.pump(const Duration(seconds: 1)); // finish the scroll animation
|
|
expect(controller.index, equals(1));
|
|
expect(find.text('First'), findsNothing);
|
|
expect(find.text('Second'), findsOneWidget);
|
|
|
|
gesture = await tester.startGesture(const Offset(100.0, 100.0));
|
|
expect(controller.index, equals(1));
|
|
|
|
// Drag to the left and right, by less than the TabBarView's width.
|
|
// The selected index (controller.index) should not change.
|
|
await gesture.moveBy(const Offset(-100.0, 0.0));
|
|
await gesture.moveBy(const Offset(100.0, 0.0));
|
|
expect(controller.index, equals(1));
|
|
expect(find.text('First'), findsNothing);
|
|
expect(find.text('Second'), findsOneWidget);
|
|
|
|
// Drag more than the TabBarView's width to the left. This forces
|
|
// the selected index to change back to 0.
|
|
await gesture.moveBy(const Offset(500.0, 0.0));
|
|
await gesture.up();
|
|
await tester.pump(); // start the scroll animation
|
|
await tester.pump(const Duration(seconds: 1)); // finish the scroll animation
|
|
expect(controller.index, equals(0));
|
|
expect(find.text('First'), findsOneWidget);
|
|
expect(find.text('Second'), findsNothing);
|
|
});
|
|
|
|
testWidgets('TabBar tap animates the selection indicator', (WidgetTester tester) async {
|
|
// This is a regression test for https://github.com/flutter/flutter/issues/7479
|
|
|
|
final List<String> tabs = <String>['A', 'B'];
|
|
|
|
const Color indicatorColor = Color(0xFFFF0000);
|
|
await tester.pumpWidget(buildFrame(tabs: tabs, value: 'A', indicatorColor: indicatorColor));
|
|
|
|
final RenderBox box = tester.renderObject(find.byType(TabBar));
|
|
final TabIndicatorRecordingCanvas canvas = TabIndicatorRecordingCanvas(indicatorColor);
|
|
final TestRecordingPaintingContext context = TestRecordingPaintingContext(canvas);
|
|
|
|
box.paint(context, Offset.zero);
|
|
final Rect indicatorRect0 = canvas.indicatorRect;
|
|
expect(indicatorRect0.left, 0.0);
|
|
expect(indicatorRect0.width, 400.0);
|
|
expect(indicatorRect0.height, 2.0);
|
|
|
|
await tester.tap(find.text('B'));
|
|
await tester.pump();
|
|
await tester.pump(const Duration(milliseconds: 50));
|
|
box.paint(context, Offset.zero);
|
|
final Rect indicatorRect1 = canvas.indicatorRect;
|
|
expect(indicatorRect1.left, greaterThan(indicatorRect0.left));
|
|
expect(indicatorRect1.right, lessThan(800.0));
|
|
expect(indicatorRect1.height, 2.0);
|
|
|
|
await tester.pump(const Duration(milliseconds: 300));
|
|
box.paint(context, Offset.zero);
|
|
final Rect indicatorRect2 = canvas.indicatorRect;
|
|
expect(indicatorRect2.left, 400.0);
|
|
expect(indicatorRect2.width, 400.0);
|
|
expect(indicatorRect2.height, 2.0);
|
|
});
|
|
|
|
testWidgets('TabBarView child disposed during animation', (WidgetTester tester) async {
|
|
// This is a regression test for this patch:
|
|
// https://github.com/flutter/flutter/pull/9015
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: 2,
|
|
);
|
|
|
|
Widget buildFrame() {
|
|
return boilerplate(
|
|
child: TabBar(
|
|
key: UniqueKey(),
|
|
controller: controller,
|
|
tabs: const <Widget>[ Text('A'), Text('B') ],
|
|
),
|
|
);
|
|
}
|
|
|
|
await tester.pumpWidget(buildFrame());
|
|
|
|
// The original TabBar will be disposed. The controller should no
|
|
// longer have any listeners from the original TabBar.
|
|
await tester.pumpWidget(buildFrame());
|
|
|
|
controller.index = 1;
|
|
await tester.pump(const Duration(milliseconds: 300));
|
|
});
|
|
|
|
testWidgets('TabBarView scrolls end close to a new page', (WidgetTester tester) async {
|
|
// This is a regression test for https://github.com/flutter/flutter/issues/9375
|
|
|
|
final TabController tabController = TabController(
|
|
vsync: const TestVSync(),
|
|
initialIndex: 1,
|
|
length: 3,
|
|
);
|
|
|
|
await tester.pumpWidget(Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: SizedBox.expand(
|
|
child: Center(
|
|
child: SizedBox(
|
|
width: 400.0,
|
|
height: 400.0,
|
|
child: TabBarView(
|
|
controller: tabController,
|
|
children: const <Widget>[
|
|
Center(child: Text('0')),
|
|
Center(child: Text('1')),
|
|
Center(child: Text('2')),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
));
|
|
|
|
expect(tabController.index, 1);
|
|
|
|
final PageView pageView = tester.widget(find.byType(PageView));
|
|
final PageController pageController = pageView.controller;
|
|
final ScrollPosition position = pageController.position;
|
|
|
|
// The TabBarView's page width is 400, so page 0 is at scroll offset 0.0,
|
|
// page 1 is at 400.0, page 2 is at 800.0.
|
|
|
|
expect(position.pixels, 400.0);
|
|
|
|
// Not close enough to switch to page 2
|
|
pageController.jumpTo(500.0);
|
|
expect(tabController.index, 1);
|
|
|
|
// Close enough to switch to page 2
|
|
pageController.jumpTo(700.0);
|
|
expect(tabController.index, 2);
|
|
|
|
// Same behavior going left: not left enough to get to page 0
|
|
pageController.jumpTo(300.0);
|
|
expect(tabController.index, 1);
|
|
|
|
// Left enough to get to page 0
|
|
pageController.jumpTo(100.0);
|
|
expect(tabController.index, 0);
|
|
});
|
|
|
|
testWidgets('Can switch to non-neighboring tab in nested TabBarView without crashing', (WidgetTester tester) async {
|
|
// This is a regression test for https://github.com/flutter/flutter/issues/18756
|
|
final TabController _mainTabController = TabController(length: 4, vsync: const TestVSync());
|
|
final TabController _nestedTabController = TabController(length: 2, vsync: const TestVSync());
|
|
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Scaffold(
|
|
appBar: AppBar(
|
|
title: const Text('Exception for Nested Tabs'),
|
|
bottom: TabBar(
|
|
controller: _mainTabController,
|
|
tabs: const <Widget>[
|
|
Tab(icon: Icon(Icons.add), text: 'A'),
|
|
Tab(icon: Icon(Icons.add), text: 'B'),
|
|
Tab(icon: Icon(Icons.add), text: 'C'),
|
|
Tab(icon: Icon(Icons.add), text: 'D'),
|
|
],
|
|
),
|
|
),
|
|
body: TabBarView(
|
|
controller: _mainTabController,
|
|
children: <Widget>[
|
|
Container(color: Colors.red),
|
|
_NestedTabBarContainer(tabController: _nestedTabController),
|
|
Container(color: Colors.green),
|
|
Container(color: Colors.indigo),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
// expect first tab to be selected
|
|
expect(_mainTabController.index, 0);
|
|
|
|
// tap on third tab
|
|
await tester.tap(find.text('C'));
|
|
await tester.pumpAndSettle();
|
|
|
|
// expect third tab to be selected without exceptions
|
|
expect(_mainTabController.index, 2);
|
|
});
|
|
|
|
testWidgets('TabBarView can warp when child is kept alive and contains ink', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/57662.
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: 3,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: TabBarView(
|
|
controller: controller,
|
|
children: const <Widget>[
|
|
Text('Page 1'),
|
|
Text('Page 2'),
|
|
KeepAliveInk('Page 3'),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(controller.index, equals(0));
|
|
expect(find.text('Page 1'), findsOneWidget);
|
|
expect(find.text('Page 3'), findsNothing);
|
|
|
|
controller.index = 2;
|
|
await tester.pumpAndSettle();
|
|
expect(find.text('Page 1'), findsNothing);
|
|
expect(find.text('Page 3'), findsOneWidget);
|
|
|
|
controller.index = 0;
|
|
await tester.pumpAndSettle();
|
|
expect(find.text('Page 1'), findsOneWidget);
|
|
expect(find.text('Page 3'), findsNothing);
|
|
|
|
expect(tester.takeException(), isNull);
|
|
});
|
|
|
|
testWidgets('TabBarView scrolls end close to a new page with custom physics', (WidgetTester tester) async {
|
|
final TabController tabController = TabController(
|
|
vsync: const TestVSync(),
|
|
initialIndex: 1,
|
|
length: 3,
|
|
);
|
|
|
|
await tester.pumpWidget(Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: SizedBox.expand(
|
|
child: Center(
|
|
child: SizedBox(
|
|
width: 400.0,
|
|
height: 400.0,
|
|
child: TabBarView(
|
|
controller: tabController,
|
|
physics: const TestScrollPhysics(),
|
|
children: const <Widget>[
|
|
Center(child: Text('0')),
|
|
Center(child: Text('1')),
|
|
Center(child: Text('2')),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
));
|
|
|
|
expect(tabController.index, 1);
|
|
|
|
final PageView pageView = tester.widget(find.byType(PageView));
|
|
final PageController pageController = pageView.controller;
|
|
final ScrollPosition position = pageController.position;
|
|
|
|
// The TabBarView's page width is 400, so page 0 is at scroll offset 0.0,
|
|
// page 1 is at 400.0, page 2 is at 800.0.
|
|
|
|
expect(position.pixels, 400.0);
|
|
|
|
// Not close enough to switch to page 2
|
|
pageController.jumpTo(500.0);
|
|
expect(tabController.index, 1);
|
|
|
|
// Close enough to switch to page 2
|
|
pageController.jumpTo(700.0);
|
|
expect(tabController.index, 2);
|
|
|
|
// Same behavior going left: not left enough to get to page 0
|
|
pageController.jumpTo(300.0);
|
|
expect(tabController.index, 1);
|
|
|
|
// Left enough to get to page 0
|
|
pageController.jumpTo(100.0);
|
|
expect(tabController.index, 0);
|
|
});
|
|
|
|
testWidgets('TabBar accepts custom physics', (WidgetTester tester) async {
|
|
final List<Tab> tabs = List<Tab>.generate(20, (int index) {
|
|
return Tab(text: 'TAB #$index');
|
|
});
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
initialIndex: tabs.length - 1,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: TabBar(
|
|
isScrollable: true,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
physics: const TestScrollPhysics(),
|
|
),
|
|
),
|
|
);
|
|
|
|
final TabBar tabBar = tester.widget(find.byType(TabBar));
|
|
final double position = tabBar.physics!.applyPhysicsToUserOffset(MockScrollMetrics(), 10);
|
|
|
|
expect(position, equals(20));
|
|
});
|
|
|
|
testWidgets('Scrollable TabBar with a non-zero TabController initialIndex', (WidgetTester tester) async {
|
|
// This is a regression test for https://github.com/flutter/flutter/issues/9374
|
|
|
|
final List<Tab> tabs = List<Tab>.generate(20, (int index) {
|
|
return Tab(text: 'TAB #$index');
|
|
});
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
initialIndex: tabs.length - 1,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: TabBar(
|
|
isScrollable: true,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
);
|
|
|
|
// The initialIndex tab should be visible and right justified
|
|
expect(find.text('TAB #19'), findsOneWidget);
|
|
|
|
// Tabs have a minimum width of 72.0 and 'TAB #19' is wider than
|
|
// that. Tabs are padded horizontally with kTabLabelPadding.
|
|
final double tabRight = 800.0 - kTabLabelPadding.right;
|
|
|
|
expect(tester.getTopRight(find.widgetWithText(Tab, 'TAB #19')).dx, tabRight);
|
|
});
|
|
|
|
testWidgets('TabBar with indicatorWeight, indicatorPadding (LTR)', (WidgetTester tester) async {
|
|
const Color indicatorColor = Color(0xFF00FF00);
|
|
const double indicatorWeight = 8.0;
|
|
const double padLeft = 8.0;
|
|
const double padRight = 4.0;
|
|
|
|
final List<Widget> tabs = List<Widget>.generate(4, (int index) {
|
|
return Tab(text: 'Tab $index');
|
|
});
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
indicatorWeight: indicatorWeight,
|
|
indicatorColor: indicatorColor,
|
|
indicatorPadding: const EdgeInsets.only(left: padLeft, right: padRight),
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
expect(tabBarBox.size.height, 54.0); // 54 = _kTabHeight(46) + indicatorWeight(8.0)
|
|
|
|
const double indicatorY = 54.0 - indicatorWeight / 2.0;
|
|
double indicatorLeft = padLeft + indicatorWeight / 2.0;
|
|
double indicatorRight = 200.0 - (padRight + indicatorWeight / 2.0);
|
|
|
|
expect(tabBarBox, paints..line(
|
|
color: indicatorColor,
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
|
|
// Select tab 3
|
|
controller.index = 3;
|
|
await tester.pumpAndSettle();
|
|
|
|
indicatorLeft = 600.0 + padLeft + indicatorWeight / 2.0;
|
|
indicatorRight = 800.0 - (padRight + indicatorWeight / 2.0);
|
|
|
|
expect(tabBarBox, paints..line(
|
|
color: indicatorColor,
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
});
|
|
|
|
testWidgets('TabBar with indicatorWeight, indicatorPadding (RTL)', (WidgetTester tester) async {
|
|
const Color indicatorColor = Color(0xFF00FF00);
|
|
const double indicatorWeight = 8.0;
|
|
const double padLeft = 8.0;
|
|
const double padRight = 4.0;
|
|
|
|
final List<Widget> tabs = List<Widget>.generate(4, (int index) {
|
|
return Tab(text: 'Tab $index');
|
|
});
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
textDirection: TextDirection.rtl,
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
indicatorWeight: indicatorWeight,
|
|
indicatorColor: indicatorColor,
|
|
indicatorPadding: const EdgeInsets.only(left: padLeft, right: padRight),
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
expect(tabBarBox.size.height, 54.0); // 54 = _kTabHeight(46) + indicatorWeight(8.0)
|
|
expect(tabBarBox.size.width, 800.0);
|
|
|
|
const double indicatorY = 54.0 - indicatorWeight / 2.0;
|
|
double indicatorLeft = 600.0 + padLeft + indicatorWeight / 2.0;
|
|
double indicatorRight = 800.0 - padRight - indicatorWeight / 2.0;
|
|
|
|
expect(tabBarBox, paints..line(
|
|
color: indicatorColor,
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
|
|
// Select tab 3
|
|
controller.index = 3;
|
|
await tester.pumpAndSettle();
|
|
|
|
indicatorLeft = padLeft + indicatorWeight / 2.0;
|
|
indicatorRight = 200.0 - padRight - indicatorWeight / 2.0;
|
|
|
|
expect(tabBarBox, paints..line(
|
|
color: indicatorColor,
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
});
|
|
|
|
testWidgets('TabBar changes indicator attributes', (WidgetTester tester) async {
|
|
final List<Widget> tabs = List<Widget>.generate(4, (int index) {
|
|
return Tab(text: 'Tab $index');
|
|
});
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
Color indicatorColor = const Color(0xFF00FF00);
|
|
double indicatorWeight = 8.0;
|
|
double padLeft = 8.0;
|
|
double padRight = 4.0;
|
|
|
|
Widget buildFrame() {
|
|
return boilerplate(
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
indicatorWeight: indicatorWeight,
|
|
indicatorColor: indicatorColor,
|
|
indicatorPadding: EdgeInsets.only(left: padLeft, right: padRight),
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
await tester.pumpWidget(buildFrame());
|
|
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
expect(tabBarBox.size.height, 54.0); // 54 = _kTabHeight(46) + indicatorWeight(8.0)
|
|
|
|
double indicatorY = 54.0 - indicatorWeight / 2.0;
|
|
double indicatorLeft = padLeft + indicatorWeight / 2.0;
|
|
double indicatorRight = 200.0 - (padRight + indicatorWeight / 2.0);
|
|
|
|
expect(tabBarBox, paints..line(
|
|
color: indicatorColor,
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
|
|
indicatorColor = const Color(0xFF0000FF);
|
|
indicatorWeight = 4.0;
|
|
padLeft = 4.0;
|
|
padRight = 8.0;
|
|
|
|
await tester.pumpWidget(buildFrame());
|
|
|
|
expect(tabBarBox.size.height, 50.0); // 54 = _kTabHeight(46) + indicatorWeight(4.0)
|
|
|
|
indicatorY = 50.0 - indicatorWeight / 2.0;
|
|
indicatorLeft = padLeft + indicatorWeight / 2.0;
|
|
indicatorRight = 200.0 - (padRight + indicatorWeight / 2.0);
|
|
|
|
expect(tabBarBox, paints..line(
|
|
color: indicatorColor,
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
});
|
|
|
|
testWidgets('TabBar with directional indicatorPadding (LTR)', (WidgetTester tester) async {
|
|
final List<Widget> tabs = <Widget>[
|
|
SizedBox(key: UniqueKey(), width: 130.0, height: 30.0),
|
|
SizedBox(key: UniqueKey(), width: 140.0, height: 40.0),
|
|
SizedBox(key: UniqueKey(), width: 150.0, height: 50.0),
|
|
];
|
|
|
|
const double indicatorWeight = 2.0; // the default
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
indicatorPadding: const EdgeInsetsDirectional.only(start: 100.0),
|
|
isScrollable: true,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
const double tabBarHeight = 50.0 + indicatorWeight; // 50 = max tab height
|
|
expect(tabBarBox.size.height, tabBarHeight);
|
|
|
|
// Tab0 width = 130, height = 30
|
|
double tabLeft = kTabLabelPadding.left;
|
|
double tabRight = tabLeft + 130.0;
|
|
double tabTop = (tabBarHeight - indicatorWeight - 30.0) / 2.0;
|
|
double tabBottom = tabTop + 30.0;
|
|
Rect tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[0].key!)), tabRect);
|
|
|
|
|
|
// Tab1 width = 140, height = 40
|
|
tabLeft = tabRight + kTabLabelPadding.right + kTabLabelPadding.left;
|
|
tabRight = tabLeft + 140.0;
|
|
tabTop = (tabBarHeight - indicatorWeight - 40.0) / 2.0;
|
|
tabBottom = tabTop + 40.0;
|
|
tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[1].key!)), tabRect);
|
|
|
|
|
|
// Tab2 width = 150, height = 50
|
|
tabLeft = tabRight + kTabLabelPadding.right + kTabLabelPadding.left;
|
|
tabRight = tabLeft + 150.0;
|
|
tabTop = (tabBarHeight - indicatorWeight - 50.0) / 2.0;
|
|
tabBottom = tabTop + 50.0;
|
|
tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[2].key!)), tabRect);
|
|
|
|
// Tab 0 selected, indicator padding resolves to left: 100.0
|
|
const double indicatorLeft = 100.0 + indicatorWeight / 2.0;
|
|
final double indicatorRight = 130.0 + kTabLabelPadding.horizontal - indicatorWeight / 2.0;
|
|
final double indicatorY = tabBottom + indicatorWeight / 2.0;
|
|
expect(tabBarBox, paints..line(
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
});
|
|
|
|
testWidgets('TabBar with directional indicatorPadding (RTL)', (WidgetTester tester) async {
|
|
final List<Widget> tabs = <Widget>[
|
|
SizedBox(key: UniqueKey(), width: 130.0, height: 30.0),
|
|
SizedBox(key: UniqueKey(), width: 140.0, height: 40.0),
|
|
SizedBox(key: UniqueKey(), width: 150.0, height: 50.0),
|
|
];
|
|
|
|
const double indicatorWeight = 2.0; // the default
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
textDirection: TextDirection.rtl,
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
indicatorPadding: const EdgeInsetsDirectional.only(start: 100.0),
|
|
isScrollable: true,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
const double tabBarHeight = 50.0 + indicatorWeight; // 50 = max tab height
|
|
expect(tabBarBox.size.height, tabBarHeight);
|
|
|
|
// Tab2 width = 150, height = 50
|
|
double tabLeft = kTabLabelPadding.left;
|
|
double tabRight = tabLeft + 150.0;
|
|
double tabTop = (tabBarHeight - indicatorWeight - 50.0) / 2.0;
|
|
double tabBottom = tabTop + 50.0;
|
|
Rect tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[2].key!)), tabRect);
|
|
|
|
// Tab1 width = 140, height = 40
|
|
tabLeft = tabRight + kTabLabelPadding.right + kTabLabelPadding.left;
|
|
tabRight = tabLeft + 140.0;
|
|
tabTop = (tabBarHeight - indicatorWeight - 40.0) / 2.0;
|
|
tabBottom = tabTop + 40.0;
|
|
tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[1].key!)), tabRect);
|
|
|
|
// Tab0 width = 130, height = 30
|
|
tabLeft = tabRight + kTabLabelPadding.right + kTabLabelPadding.left;
|
|
tabRight = tabLeft + 130.0;
|
|
tabTop = (tabBarHeight - indicatorWeight - 30.0) / 2.0;
|
|
tabBottom = tabTop + 30.0;
|
|
tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[0].key!)), tabRect);
|
|
|
|
// Tab 0 selected, indicator padding resolves to right: 100.0
|
|
final double indicatorLeft = tabLeft - kTabLabelPadding.left + indicatorWeight / 2.0;
|
|
final double indicatorRight = tabRight + kTabLabelPadding.left - indicatorWeight / 2.0 - 100.0;
|
|
const double indicatorY = 50.0 + indicatorWeight / 2.0;
|
|
expect(tabBarBox, paints..line(
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
});
|
|
|
|
testWidgets('TabBar with custom indicator and indicatorPadding(LTR)', (WidgetTester tester) async {
|
|
const Color indicatorColor = Color(0xFF00FF00);
|
|
const double padTop = 10.0;
|
|
const double padBottom = 12.0;
|
|
const double padLeft = 8.0;
|
|
const double padRight = 4.0;
|
|
const Decoration indicator = BoxDecoration(color: indicatorColor);
|
|
|
|
final List<Widget> tabs = List<Widget>.generate(4, (int index) {
|
|
return Tab(text: 'Tab $index');
|
|
});
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
indicator: indicator,
|
|
indicatorPadding:
|
|
const EdgeInsets.fromLTRB(padLeft, padTop, padRight, padBottom),
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final RenderBox tabBarBox =
|
|
tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
expect(tabBarBox.size.height, 48.0);
|
|
// 48 = _kTabHeight(46) + indicatorWeight(2.0) ~default
|
|
|
|
const double indicatorBottom = 48.0 - padBottom;
|
|
const double indicatorTop = padTop;
|
|
double indicatorLeft = padLeft;
|
|
double indicatorRight = 200.0 - padRight;
|
|
|
|
expect(tabBarBox, paints..rect(
|
|
rect: Rect.fromLTRB(
|
|
indicatorLeft,
|
|
indicatorTop,
|
|
indicatorRight,
|
|
indicatorBottom,
|
|
),
|
|
color: indicatorColor,
|
|
));
|
|
|
|
// Select tab 3
|
|
controller.index = 3;
|
|
await tester.pumpAndSettle();
|
|
|
|
indicatorLeft = 600.0 + padLeft;
|
|
indicatorRight = 800.0 - padRight;
|
|
|
|
expect(tabBarBox, paints..rect(
|
|
rect: Rect.fromLTRB(
|
|
indicatorLeft,
|
|
indicatorTop,
|
|
indicatorRight,
|
|
indicatorBottom,
|
|
),
|
|
color: indicatorColor,
|
|
));
|
|
});
|
|
|
|
testWidgets('TabBar with custom indicator and indicatorPadding (RTL)', (WidgetTester tester) async {
|
|
const Color indicatorColor = Color(0xFF00FF00);
|
|
const double padTop = 10.0;
|
|
const double padBottom = 12.0;
|
|
const double padLeft = 8.0;
|
|
const double padRight = 4.0;
|
|
const Decoration indicator = BoxDecoration(color: indicatorColor);
|
|
|
|
final List<Widget> tabs = List<Widget>.generate(4, (int index) {
|
|
return Tab(text: 'Tab $index');
|
|
});
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
textDirection: TextDirection.rtl,
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
indicator: indicator,
|
|
indicatorPadding: const EdgeInsets.fromLTRB(padLeft, padTop, padRight, padBottom),
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final RenderBox tabBarBox =
|
|
tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
expect(tabBarBox.size.height, 48.0);
|
|
// 48 = _kTabHeight(46) + indicatorWeight(2.0) ~default
|
|
expect(tabBarBox.size.width, 800.0);
|
|
const double indicatorBottom = 48.0 - padBottom;
|
|
const double indicatorTop = padTop;
|
|
double indicatorLeft = 600.0 + padLeft;
|
|
double indicatorRight = 800.0 - padRight;
|
|
|
|
expect(tabBarBox, paints..rect(
|
|
rect: Rect.fromLTRB(
|
|
indicatorLeft,
|
|
indicatorTop,
|
|
indicatorRight,
|
|
indicatorBottom,
|
|
),
|
|
color: indicatorColor,
|
|
));
|
|
|
|
// Select tab 3
|
|
controller.index = 3;
|
|
await tester.pumpAndSettle();
|
|
|
|
indicatorLeft = padLeft;
|
|
indicatorRight = 200.0 - padRight;
|
|
|
|
expect(tabBarBox,paints..rect(
|
|
rect: Rect.fromLTRB(
|
|
indicatorLeft,
|
|
indicatorTop,
|
|
indicatorRight,
|
|
indicatorBottom,
|
|
),
|
|
color: indicatorColor,
|
|
));
|
|
});
|
|
|
|
testWidgets('TabBar with custom indicator - directional indicatorPadding (LTR)', (WidgetTester tester) async {
|
|
final List<Widget > tabs = <Widget>[
|
|
SizedBox(key: UniqueKey(), width: 130.0, height: 30.0),
|
|
SizedBox(key: UniqueKey(), width: 140.0, height: 40.0),
|
|
SizedBox(key: UniqueKey(), width: 150.0, height: 50.0),
|
|
];
|
|
const Color indicatorColor = Color(0xFF00FF00);
|
|
const double padTop = 10.0;
|
|
const double padBottom = 12.0;
|
|
const double padStart = 8.0;
|
|
const double padEnd = 4.0;
|
|
const Decoration indicator = BoxDecoration(color: indicatorColor);
|
|
const double indicatorWeight = 2.0; // the default
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
indicator: indicator,
|
|
indicatorPadding: const EdgeInsetsDirectional.fromSTEB(padStart, padTop, padEnd, padBottom),
|
|
isScrollable: true,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
const double tabBarHeight = 50.0 + indicatorWeight; // 50 = max tab height
|
|
expect(tabBarBox.size.height, tabBarHeight);
|
|
|
|
// Tab0 width = 130, height = 30
|
|
double tabLeft = kTabLabelPadding.left;
|
|
double tabRight = tabLeft + 130.0;
|
|
double tabTop = (tabBarHeight - indicatorWeight - 30.0) / 2.0;
|
|
double tabBottom = tabTop + 30.0;
|
|
Rect tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[0].key!)), tabRect);
|
|
|
|
// Tab1 width = 140, height = 40
|
|
tabLeft = tabRight + kTabLabelPadding.right + kTabLabelPadding.left;
|
|
tabRight = tabLeft + 140.0;
|
|
tabTop = (tabBarHeight - indicatorWeight - 40.0) / 2.0;
|
|
tabBottom = tabTop + 40.0;
|
|
tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[1].key!)), tabRect);
|
|
|
|
// Tab2 width = 150, height = 50
|
|
tabLeft = tabRight + kTabLabelPadding.right + kTabLabelPadding.left;
|
|
tabRight = tabLeft + 150.0;
|
|
tabTop = (tabBarHeight - indicatorWeight - 50.0) / 2.0;
|
|
tabBottom = tabTop + 50.0;
|
|
tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[2].key!)), tabRect);
|
|
|
|
// Tab 0 selected, indicator padding resolves to left: 8.0, right: 4.0
|
|
const double indicatorLeft = padStart;
|
|
final double indicatorRight = 130.0 + kTabLabelPadding.horizontal - padEnd;
|
|
const double indicatorTop = padTop;
|
|
const double indicatorBottom = tabBarHeight - padBottom;
|
|
expect(tabBarBox, paints..rect(
|
|
rect: Rect.fromLTRB(
|
|
indicatorLeft,
|
|
indicatorTop,
|
|
indicatorRight,
|
|
indicatorBottom,
|
|
),
|
|
color: indicatorColor,
|
|
));
|
|
});
|
|
|
|
testWidgets('TabBar with custom indicator - directional indicatorPadding (RTL)', (WidgetTester tester) async {
|
|
final List<Widget> tabs = <Widget>[
|
|
SizedBox(key: UniqueKey(), width: 130.0, height: 30.0),
|
|
SizedBox(key: UniqueKey(), width: 140.0, height: 40.0),
|
|
SizedBox(key: UniqueKey(), width: 150.0, height: 50.0),
|
|
];
|
|
const Color indicatorColor = Color(0xFF00FF00);
|
|
const double padTop = 10.0;
|
|
const double padBottom = 12.0;
|
|
const double padStart = 8.0;
|
|
const double padEnd = 4.0;
|
|
const Decoration indicator = BoxDecoration(color: indicatorColor);
|
|
const double indicatorWeight = 2.0; // the default
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
textDirection: TextDirection.rtl,
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
indicator: indicator,
|
|
indicatorPadding: const EdgeInsetsDirectional.fromSTEB(padStart, padTop, padEnd, padBottom),
|
|
isScrollable: true,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final RenderBox tabBarBox =
|
|
tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
const double tabBarHeight = 50.0 + indicatorWeight; // 50 = max tab height
|
|
expect(tabBarBox.size.height, tabBarHeight);
|
|
|
|
// Tab2 width = 150, height = 50
|
|
double tabLeft = kTabLabelPadding.left;
|
|
double tabRight = tabLeft + 150.0;
|
|
double tabTop = (tabBarHeight - indicatorWeight - 50.0) / 2.0;
|
|
double tabBottom = tabTop + 50.0;
|
|
Rect tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[2].key!)), tabRect);
|
|
|
|
// Tab1 width = 140, height = 40
|
|
tabLeft = tabRight + kTabLabelPadding.right + kTabLabelPadding.left;
|
|
tabRight = tabLeft + 140.0;
|
|
tabTop = (tabBarHeight - indicatorWeight - 40.0) / 2.0;
|
|
tabBottom = tabTop + 40.0;
|
|
tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[1].key!)), tabRect);
|
|
|
|
// Tab0 width = 130, height = 30
|
|
tabLeft = tabRight + kTabLabelPadding.right + kTabLabelPadding.left;
|
|
tabRight = tabLeft + 130.0;
|
|
tabTop = (tabBarHeight - indicatorWeight - 30.0) / 2.0;
|
|
tabBottom = tabTop + 30.0;
|
|
tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[0].key!)), tabRect);
|
|
|
|
// Tab 0 selected, indicator padding resolves to left: 4.0, right: 8.0
|
|
final double indicatorLeft = tabLeft - kTabLabelPadding.left + padEnd;
|
|
final double indicatorRight = tabRight + kTabLabelPadding.left - padStart;
|
|
const double indicatorTop = padTop;
|
|
const double indicatorBottom = tabBarHeight - padBottom;
|
|
|
|
expect(tabBarBox, paints..rect(
|
|
rect: Rect.fromLTRB(
|
|
indicatorLeft,
|
|
indicatorTop,
|
|
indicatorRight,
|
|
indicatorBottom,
|
|
),
|
|
color: indicatorColor,
|
|
));
|
|
});
|
|
|
|
testWidgets('TabBar with padding isScrollable: false', (WidgetTester tester) async {
|
|
const double indicatorWeight = 2.0; // default indicator weight
|
|
const EdgeInsets padding = EdgeInsets.only(left: 3.0, top: 7.0, right: 5.0, bottom: 3.0);
|
|
|
|
final List<Widget> tabs = <Widget>[
|
|
SizedBox(key: UniqueKey(), width: double.infinity, height: 30.0),
|
|
SizedBox(key: UniqueKey(), width: double.infinity, height: 40.0),
|
|
];
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
padding: padding,
|
|
labelPadding: EdgeInsets.zero,
|
|
indicatorPadding: EdgeInsets.zero,
|
|
isScrollable: false,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
final double tabBarHeight = 40.0 + indicatorWeight + padding.top + padding.bottom; // 40 = max tab height
|
|
expect(tabBarBox.size.height, tabBarHeight);
|
|
|
|
final double tabSize = (tabBarBox.size.width - padding.horizontal) / 2.0;
|
|
|
|
// Tab0 height = 30
|
|
double tabLeft = padding.left;
|
|
double tabRight = tabLeft + tabSize;
|
|
double tabTop = (tabBarHeight - indicatorWeight + (padding.top - padding.bottom) - 30.0) / 2.0;
|
|
double tabBottom = tabTop + 30.0;
|
|
Rect tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[0].key!)), tabRect);
|
|
|
|
// Tab1 height = 40
|
|
tabLeft = tabRight;
|
|
tabRight = tabLeft + tabSize;
|
|
tabTop = (tabBarHeight - indicatorWeight + (padding.top - padding.bottom) - 40.0) / 2.0;
|
|
tabBottom = tabTop + 40.0;
|
|
tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[1].key!)), tabRect);
|
|
|
|
tabRight += padding.right;
|
|
expect(tabBarBox.size.width, tabRight);
|
|
});
|
|
|
|
testWidgets('TabBar with padding isScrollable: true', (WidgetTester tester) async {
|
|
const double indicatorWeight = 2.0; // default indicator weight
|
|
const EdgeInsets padding = EdgeInsets.only(left: 3.0, top: 7.0, right: 5.0, bottom: 3.0);
|
|
|
|
final List<Widget> tabs = <Widget>[
|
|
SizedBox(key: UniqueKey(), width: 130.0, height: 30.0),
|
|
SizedBox(key: UniqueKey(), width: 140.0, height: 40.0),
|
|
SizedBox(key: UniqueKey(), width: 150.0, height: 50.0),
|
|
];
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
padding: padding,
|
|
labelPadding: EdgeInsets.zero,
|
|
indicatorPadding: EdgeInsets.zero,
|
|
isScrollable: true,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
final double tabBarHeight = 50.0 + indicatorWeight + padding.top + padding.bottom; // 50 = max tab height
|
|
expect(tabBarBox.size.height, tabBarHeight);
|
|
|
|
// Tab0 width = 130, height = 30
|
|
double tabLeft = padding.left;
|
|
double tabRight = tabLeft + 130.0;
|
|
double tabTop = (tabBarHeight - indicatorWeight + (padding.top - padding.bottom) - 30.0) / 2.0;
|
|
double tabBottom = tabTop + 30.0;
|
|
Rect tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[0].key!)), tabRect);
|
|
|
|
// Tab1 width = 140, height = 40
|
|
tabLeft = tabRight;
|
|
tabRight = tabLeft + 140.0;
|
|
tabTop = (tabBarHeight - indicatorWeight + (padding.top - padding.bottom) - 40.0) / 2.0;
|
|
tabBottom = tabTop + 40.0;
|
|
tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[1].key!)), tabRect);
|
|
|
|
// Tab2 width = 150, height = 50
|
|
tabLeft = tabRight;
|
|
tabRight = tabLeft + 150.0;
|
|
tabTop = (tabBarHeight - indicatorWeight + (padding.top - padding.bottom) - 50.0) / 2.0;
|
|
tabBottom = tabTop + 50.0;
|
|
tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[2].key!)), tabRect);
|
|
|
|
tabRight += padding.right;
|
|
expect(tabBarBox.size.width, tabRight);
|
|
});
|
|
|
|
testWidgets('TabBar with labelPadding', (WidgetTester tester) async {
|
|
const double indicatorWeight = 2.0; // default indicator weight
|
|
const EdgeInsets labelPadding = EdgeInsets.only(left: 3.0, right: 7.0);
|
|
const EdgeInsets indicatorPadding = labelPadding;
|
|
|
|
final List<Widget> tabs = <Widget>[
|
|
SizedBox(key: UniqueKey(), width: 130.0, height: 30.0),
|
|
SizedBox(key: UniqueKey(), width: 140.0, height: 40.0),
|
|
SizedBox(key: UniqueKey(), width: 150.0, height: 50.0),
|
|
];
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
labelPadding: labelPadding,
|
|
indicatorPadding: labelPadding,
|
|
isScrollable: true,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
const double tabBarHeight = 50.0 + indicatorWeight; // 50 = max tab height
|
|
expect(tabBarBox.size.height, tabBarHeight);
|
|
|
|
// Tab0 width = 130, height = 30
|
|
double tabLeft = labelPadding.left;
|
|
double tabRight = tabLeft + 130.0;
|
|
double tabTop = (tabBarHeight - indicatorWeight - 30.0) / 2.0;
|
|
double tabBottom = tabTop + 30.0;
|
|
Rect tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[0].key!)), tabRect);
|
|
|
|
// Tab1 width = 140, height = 40
|
|
tabLeft = tabRight + labelPadding.right + labelPadding.left;
|
|
tabRight = tabLeft + 140.0;
|
|
tabTop = (tabBarHeight - indicatorWeight - 40.0) / 2.0;
|
|
tabBottom = tabTop + 40.0;
|
|
tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[1].key!)), tabRect);
|
|
|
|
// Tab2 width = 150, height = 50
|
|
tabLeft = tabRight + labelPadding.right + labelPadding.left;
|
|
tabRight = tabLeft + 150.0;
|
|
tabTop = (tabBarHeight - indicatorWeight - 50.0) / 2.0;
|
|
tabBottom = tabTop + 50.0;
|
|
tabRect = Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom);
|
|
expect(tester.getRect(find.byKey(tabs[2].key!)), tabRect);
|
|
|
|
// Tab 0 selected, indicatorPadding == labelPadding
|
|
final double indicatorLeft = indicatorPadding.left + indicatorWeight / 2.0;
|
|
final double indicatorRight = 130.0 + labelPadding.horizontal - indicatorPadding.right - indicatorWeight / 2.0;
|
|
final double indicatorY = tabBottom + indicatorWeight / 2.0;
|
|
expect(tabBarBox, paints..line(
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
});
|
|
|
|
testWidgets('Overflowing RTL tab bar', (WidgetTester tester) async {
|
|
final List<Widget> tabs = List<Widget>.filled(100,
|
|
// For convenience padded width of each tab will equal 100:
|
|
// 68 + kTabLabelPadding.horizontal(32)
|
|
SizedBox(key: UniqueKey(), width: 68.0, height: 40.0),
|
|
);
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
const double indicatorWeight = 2.0; // the default
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
textDirection: TextDirection.rtl,
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
isScrollable: true,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
const double tabBarHeight = 40.0 + indicatorWeight; // 40 = tab height
|
|
expect(tabBarBox.size.height, tabBarHeight);
|
|
|
|
// Tab 0 out of 100 selected
|
|
double indicatorLeft = 99.0 * 100.0 + indicatorWeight / 2.0;
|
|
double indicatorRight = 100.0 * 100.0 - indicatorWeight / 2.0;
|
|
const double indicatorY = 40.0 + indicatorWeight / 2.0;
|
|
expect(tabBarBox, paints..line(
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
|
|
controller.animateTo(tabs.length - 1, duration: const Duration(seconds: 1), curve: Curves.linear);
|
|
await tester.pump();
|
|
await tester.pump(const Duration(milliseconds: 500));
|
|
|
|
expect(tabBarBox, paints..line(
|
|
strokeWidth: indicatorWeight,
|
|
p1: const Offset(4951.0, indicatorY),
|
|
p2: const Offset(5049.0, indicatorY),
|
|
));
|
|
|
|
await tester.pump(const Duration(milliseconds: 501));
|
|
|
|
// Tab 99 out of 100 selected, appears on the far left because RTL
|
|
indicatorLeft = indicatorWeight / 2.0;
|
|
indicatorRight = 100.0 - indicatorWeight / 2.0;
|
|
expect(tabBarBox, paints..line(
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
});
|
|
|
|
testWidgets('Tab indicator animation test', (WidgetTester tester) async {
|
|
const double indicatorWeight = 8.0;
|
|
|
|
final List<Widget> tabs = List<Widget>.generate(4, (int index) {
|
|
return Tab(text: 'Tab $index');
|
|
});
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
indicatorWeight: indicatorWeight,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
|
|
// Initial indicator position.
|
|
const double indicatorY = 54.0 - indicatorWeight / 2.0;
|
|
double indicatorLeft = indicatorWeight / 2.0;
|
|
double indicatorRight = 200.0 - (indicatorWeight / 2.0);
|
|
|
|
expect(tabBarBox, paints..line(
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
|
|
// Select tab 1.
|
|
controller.animateTo(1, duration: const Duration(milliseconds: 1000), curve: Curves.linear);
|
|
await tester.pump();
|
|
await tester.pump(const Duration(milliseconds: 500));
|
|
indicatorLeft = 100.0 + indicatorWeight / 2.0;
|
|
indicatorRight = 300.0 - (indicatorWeight / 2.0);
|
|
|
|
expect(tabBarBox, paints..line(
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
|
|
// Select tab 2 when animation is running.
|
|
controller.animateTo(2, duration: const Duration(milliseconds: 1000), curve: Curves.linear);
|
|
await tester.pump();
|
|
await tester.pump(const Duration(milliseconds: 500));
|
|
indicatorLeft = 250.0 + indicatorWeight / 2.0;
|
|
indicatorRight = 450.0 - (indicatorWeight / 2.0);
|
|
|
|
expect(tabBarBox, paints..line(
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
|
|
// Final indicator position.
|
|
await tester.pumpAndSettle();
|
|
indicatorLeft = 400.0 + indicatorWeight / 2.0;
|
|
indicatorRight = 600.0 - (indicatorWeight / 2.0);
|
|
|
|
expect(tabBarBox, paints..line(
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
});
|
|
|
|
testWidgets('correct semantics', (WidgetTester tester) async {
|
|
final SemanticsTester semantics = SemanticsTester(tester);
|
|
|
|
final List<Tab> tabs = List<Tab>.generate(2, (int index) {
|
|
return Tab(text: 'TAB #$index');
|
|
});
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
initialIndex: 0,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Semantics(
|
|
container: true,
|
|
child: TabBar(
|
|
isScrollable: true,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final TestSemantics expectedSemantics = TestSemantics.root(
|
|
children: <TestSemantics>[
|
|
TestSemantics.rootChild(
|
|
id: 1,
|
|
rect: TestSemantics.fullScreen,
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
id: 2,
|
|
rect: TestSemantics.fullScreen,
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
id: 3,
|
|
rect: TestSemantics.fullScreen,
|
|
flags: <SemanticsFlag>[SemanticsFlag.hasImplicitScrolling],
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
id: 4,
|
|
actions: <SemanticsAction>[SemanticsAction.tap],
|
|
flags: <SemanticsFlag>[
|
|
SemanticsFlag.isSelected,
|
|
SemanticsFlag.isFocusable,
|
|
],
|
|
label: 'TAB #0\nTab 1 of 2',
|
|
rect: const Rect.fromLTRB(0.0, 0.0, 116.0, kTextTabBarHeight),
|
|
transform: Matrix4.translationValues(0.0, 276.0, 0.0),
|
|
),
|
|
TestSemantics(
|
|
id: 5,
|
|
flags: <SemanticsFlag>[SemanticsFlag.isFocusable],
|
|
actions: <SemanticsAction>[SemanticsAction.tap],
|
|
label: 'TAB #1\nTab 2 of 2',
|
|
rect: const Rect.fromLTRB(0.0, 0.0, 116.0, kTextTabBarHeight),
|
|
transform: Matrix4.translationValues(116.0, 276.0, 0.0),
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
);
|
|
|
|
expect(semantics, hasSemantics(expectedSemantics));
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('correct scrolling semantics', (WidgetTester tester) async {
|
|
final SemanticsTester semantics = SemanticsTester(tester);
|
|
|
|
final List<Tab> tabs = List<Tab>.generate(20, (int index) {
|
|
return Tab(text: 'This is a very wide tab #$index');
|
|
});
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
initialIndex: 0,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Semantics(
|
|
container: true,
|
|
child: TabBar(
|
|
isScrollable: true,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
const String tab0title = 'This is a very wide tab #0\nTab 1 of 20';
|
|
const String tab10title = 'This is a very wide tab #10\nTab 11 of 20';
|
|
|
|
expect(semantics, includesNodeWith(actions: <SemanticsAction>[SemanticsAction.scrollLeft]));
|
|
expect(semantics, includesNodeWith(label: tab0title));
|
|
expect(semantics, isNot(includesNodeWith(label: tab10title)));
|
|
|
|
controller.index = 10;
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(semantics, isNot(includesNodeWith(label: tab0title)));
|
|
expect(semantics, includesNodeWith(actions: <SemanticsAction>[SemanticsAction.scrollLeft, SemanticsAction.scrollRight]));
|
|
expect(semantics, includesNodeWith(label: tab10title));
|
|
|
|
controller.index = 19;
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(semantics, includesNodeWith(actions: <SemanticsAction>[SemanticsAction.scrollRight]));
|
|
|
|
controller.index = 0;
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(semantics, includesNodeWith(actions: <SemanticsAction>[SemanticsAction.scrollLeft]));
|
|
expect(semantics, includesNodeWith(label: tab0title));
|
|
expect(semantics, isNot(includesNodeWith(label: tab10title)));
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('TabBar etc with zero tabs', (WidgetTester tester) async {
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: 0,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Column(
|
|
children: <Widget>[
|
|
TabBar(
|
|
controller: controller,
|
|
tabs: const <Widget>[],
|
|
),
|
|
Flexible(
|
|
child: TabBarView(
|
|
controller: controller,
|
|
children: const <Widget>[],
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(controller.index, 0);
|
|
expect(tester.getSize(find.byType(TabBar)), const Size(800.0, 48.0));
|
|
expect(tester.getSize(find.byType(TabBarView)), const Size(800.0, 600.0 - 48.0));
|
|
|
|
// A fling in the TabBar or TabBarView, shouldn't do anything.
|
|
|
|
await tester.fling(find.byType(TabBar), const Offset(-100.0, 0.0), 5000.0, warnIfMissed: false);
|
|
await tester.pumpAndSettle();
|
|
|
|
await tester.fling(find.byType(TabBarView), const Offset(100.0, 0.0), 5000.0);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(controller.index, 0);
|
|
});
|
|
|
|
testWidgets('TabBar etc with one tab', (WidgetTester tester) async {
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: 1,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Column(
|
|
children: <Widget>[
|
|
TabBar(
|
|
controller: controller,
|
|
tabs: const <Widget>[Tab(text: 'TAB')],
|
|
),
|
|
Flexible(
|
|
child: TabBarView(
|
|
controller: controller,
|
|
children: const <Widget>[Text('PAGE')],
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(controller.index, 0);
|
|
expect(find.text('TAB'), findsOneWidget);
|
|
expect(find.text('PAGE'), findsOneWidget);
|
|
expect(tester.getSize(find.byType(TabBar)), const Size(800.0, 48.0));
|
|
expect(tester.getSize(find.byType(TabBarView)), const Size(800.0, 600.0 - 48.0));
|
|
|
|
// The one tab should be center vis the app's width (800).
|
|
final double tabLeft = tester.getTopLeft(find.widgetWithText(Tab, 'TAB')).dx;
|
|
final double tabRight = tester.getTopRight(find.widgetWithText(Tab, 'TAB')).dx;
|
|
expect(tabLeft + (tabRight - tabLeft) / 2.0, 400.0);
|
|
|
|
// A fling in the TabBar or TabBarView, shouldn't move the tab.
|
|
|
|
await tester.fling(find.byType(TabBar), const Offset(-100.0, 0.0), 5000.0);
|
|
await tester.pump(const Duration(milliseconds: 50));
|
|
expect(tester.getTopLeft(find.widgetWithText(Tab, 'TAB')).dx, tabLeft);
|
|
expect(tester.getTopRight(find.widgetWithText(Tab, 'TAB')).dx, tabRight);
|
|
await tester.pumpAndSettle();
|
|
|
|
await tester.fling(find.byType(TabBarView), const Offset(100.0, 0.0), 5000.0);
|
|
await tester.pump(const Duration(milliseconds: 50));
|
|
expect(tester.getTopLeft(find.widgetWithText(Tab, 'TAB')).dx, tabLeft);
|
|
expect(tester.getTopRight(find.widgetWithText(Tab, 'TAB')).dx, tabRight);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(controller.index, 0);
|
|
expect(find.text('TAB'), findsOneWidget);
|
|
expect(find.text('PAGE'), findsOneWidget);
|
|
});
|
|
|
|
testWidgets('can tap on indicator at very bottom of TabBar to switch tabs', (WidgetTester tester) async {
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: 2,
|
|
initialIndex: 0,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Column(
|
|
children: <Widget>[
|
|
TabBar(
|
|
controller: controller,
|
|
indicatorWeight: 30.0,
|
|
tabs: const <Widget>[Tab(text: 'TAB1'), Tab(text: 'TAB2')],
|
|
),
|
|
Flexible(
|
|
child: TabBarView(
|
|
controller: controller,
|
|
children: const <Widget>[Text('PAGE1'), Text('PAGE2')],
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(controller.index, 0);
|
|
|
|
final Offset bottomRight = tester.getBottomRight(find.byType(TabBar)) - const Offset(1.0, 1.0);
|
|
final TestGesture gesture = await tester.startGesture(bottomRight);
|
|
await gesture.up();
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(controller.index, 1);
|
|
});
|
|
|
|
testWidgets('can override semantics of tabs', (WidgetTester tester) async {
|
|
final SemanticsTester semantics = SemanticsTester(tester);
|
|
|
|
final List<Tab> tabs = List<Tab>.generate(2, (int index) {
|
|
return Tab(
|
|
child: Semantics(
|
|
label: 'Semantics override $index',
|
|
child: ExcludeSemantics(
|
|
child: Text('TAB #$index'),
|
|
),
|
|
),
|
|
);
|
|
});
|
|
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
initialIndex: 0,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: Semantics(
|
|
container: true,
|
|
child: TabBar(
|
|
isScrollable: true,
|
|
controller: controller,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final TestSemantics expectedSemantics = TestSemantics.root(
|
|
children: <TestSemantics>[
|
|
TestSemantics.rootChild(
|
|
id: 1,
|
|
rect: TestSemantics.fullScreen,
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
id: 2,
|
|
rect: TestSemantics.fullScreen,
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
id: 3,
|
|
rect: TestSemantics.fullScreen,
|
|
flags: <SemanticsFlag>[SemanticsFlag.hasImplicitScrolling],
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
id: 4,
|
|
flags: <SemanticsFlag>[
|
|
SemanticsFlag.isSelected,
|
|
SemanticsFlag.isFocusable,
|
|
],
|
|
actions: <SemanticsAction>[SemanticsAction.tap],
|
|
label: 'Semantics override 0\nTab 1 of 2',
|
|
rect: const Rect.fromLTRB(0.0, 0.0, 116.0, kTextTabBarHeight),
|
|
transform: Matrix4.translationValues(0.0, 276.0, 0.0),
|
|
),
|
|
TestSemantics(
|
|
id: 5,
|
|
flags: <SemanticsFlag>[SemanticsFlag.isFocusable],
|
|
actions: <SemanticsAction>[SemanticsAction.tap],
|
|
label: 'Semantics override 1\nTab 2 of 2',
|
|
rect: const Rect.fromLTRB(0.0, 0.0, 116.0, kTextTabBarHeight),
|
|
transform: Matrix4.translationValues(116.0, 276.0, 0.0),
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
);
|
|
|
|
expect(semantics, hasSemantics(expectedSemantics));
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('can be notified of TabBar onTap behavior', (WidgetTester tester) async {
|
|
int tabIndex = -1;
|
|
|
|
Widget buildFrame({
|
|
required TabController controller,
|
|
required List<String> tabs,
|
|
}) {
|
|
return boilerplate(
|
|
child: TabBar(
|
|
controller: controller,
|
|
tabs: tabs.map<Widget>((String tab) => Tab(text: tab)).toList(),
|
|
onTap: (int index) {
|
|
tabIndex = index;
|
|
},
|
|
),
|
|
);
|
|
}
|
|
|
|
final List<String> tabs = <String>['A', 'B', 'C'];
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
initialIndex: tabs.indexOf('C'),
|
|
);
|
|
|
|
await tester.pumpWidget(buildFrame(tabs: tabs, controller: controller));
|
|
expect(find.text('A'), findsOneWidget);
|
|
expect(find.text('B'), findsOneWidget);
|
|
expect(find.text('C'), findsOneWidget);
|
|
expect(controller, isNotNull);
|
|
expect(controller.index, 2);
|
|
expect(tabIndex, -1); // no tap so far so tabIndex should reflect that
|
|
|
|
// Verify whether the [onTap] notification works when the [TabBar] animates.
|
|
|
|
await tester.pumpWidget(buildFrame(tabs: tabs, controller: controller));
|
|
await tester.tap(find.text('B'));
|
|
await tester.pump();
|
|
expect(controller.indexIsChanging, true);
|
|
await tester.pumpAndSettle();
|
|
expect(controller.index, 1);
|
|
expect(controller.previousIndex, 2);
|
|
expect(controller.indexIsChanging, false);
|
|
expect(tabIndex, controller.index);
|
|
|
|
tabIndex = -1;
|
|
|
|
await tester.pumpWidget(buildFrame(tabs: tabs, controller: controller));
|
|
await tester.tap(find.text('C'));
|
|
await tester.pump();
|
|
await tester.pumpAndSettle();
|
|
expect(controller.index, 2);
|
|
expect(controller.previousIndex, 1);
|
|
expect(tabIndex, controller.index);
|
|
|
|
tabIndex = -1;
|
|
|
|
await tester.pumpWidget(buildFrame(tabs: tabs, controller: controller));
|
|
await tester.tap(find.text('A'));
|
|
await tester.pump();
|
|
await tester.pumpAndSettle();
|
|
expect(controller.index, 0);
|
|
expect(controller.previousIndex, 2);
|
|
expect(tabIndex, controller.index);
|
|
|
|
tabIndex = -1;
|
|
|
|
// Verify whether [onTap] is called even when the [TabController] does
|
|
// not change.
|
|
|
|
final int currentControllerIndex = controller.index;
|
|
await tester.pumpWidget(buildFrame(tabs: tabs, controller: controller));
|
|
await tester.tap(find.text('A'));
|
|
await tester.pump();
|
|
await tester.pumpAndSettle();
|
|
expect(controller.index, currentControllerIndex); // controller has not changed
|
|
expect(tabIndex, 0);
|
|
});
|
|
|
|
test('illegal constructor combinations', () {
|
|
expect(() => Tab(icon: nonconst(null)), throwsAssertionError);
|
|
expect(() => Tab(icon: Container(), text: 'foo', child: Container()), throwsAssertionError);
|
|
expect(() => Tab(text: 'foo', child: Container()), throwsAssertionError);
|
|
});
|
|
|
|
testWidgets('Tabs changes mouse cursor when a tab is hovered', (WidgetTester tester) async {
|
|
final List<String> tabs = <String>['A', 'B'];
|
|
await tester.pumpWidget(MaterialApp(home: DefaultTabController(
|
|
length: tabs.length,
|
|
child: Scaffold(
|
|
body: MouseRegion(
|
|
cursor: SystemMouseCursors.forbidden,
|
|
child: TabBar(
|
|
mouseCursor: SystemMouseCursors.text,
|
|
tabs: tabs.map<Widget>((String tab) => Tab(text: tab)).toList(),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
));
|
|
|
|
final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse, pointer: 1);
|
|
await gesture.addPointer(location: tester.getCenter(find.byType(Tab).first));
|
|
addTearDown(gesture.removePointer);
|
|
|
|
await tester.pump();
|
|
|
|
expect(RendererBinding.instance!.mouseTracker.debugDeviceActiveCursor(1), SystemMouseCursors.text);
|
|
|
|
// Test default cursor
|
|
await tester.pumpWidget(MaterialApp(home: DefaultTabController(
|
|
length: tabs.length,
|
|
child: Scaffold(
|
|
body: MouseRegion(
|
|
cursor: SystemMouseCursors.forbidden,
|
|
child: TabBar(
|
|
tabs: tabs.map<Widget>((String tab) => Tab(text: tab)).toList(),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
));
|
|
expect(RendererBinding.instance!.mouseTracker.debugDeviceActiveCursor(1), SystemMouseCursors.click);
|
|
});
|
|
|
|
testWidgets('TabController changes', (WidgetTester tester) async {
|
|
// This is a regression test for https://github.com/flutter/flutter/issues/14812
|
|
|
|
Widget buildFrame(TabController controller) {
|
|
return boilerplate(
|
|
child: Container(
|
|
alignment: Alignment.topLeft,
|
|
child: TabBar(
|
|
controller: controller,
|
|
tabs: const <Tab>[
|
|
Tab(text: 'LEFT'),
|
|
Tab(text: 'RIGHT'),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
final TabController controller1 = TabController(
|
|
vsync: const TestVSync(),
|
|
length: 2,
|
|
initialIndex: 0,
|
|
);
|
|
|
|
final TabController controller2 = TabController(
|
|
vsync: const TestVSync(),
|
|
length: 2,
|
|
initialIndex: 0,
|
|
);
|
|
|
|
await tester.pumpWidget(buildFrame(controller1));
|
|
await tester.pumpWidget(buildFrame(controller2));
|
|
expect(controller1.index, 0);
|
|
expect(controller2.index, 0);
|
|
|
|
const double indicatorWeight = 2.0;
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
expect(tabBarBox.size.height, 48.0); // 48 = _kTabHeight(46) + indicatorWeight(2.0)
|
|
|
|
const double indicatorY = 48.0 - indicatorWeight / 2.0;
|
|
double indicatorLeft = indicatorWeight / 2.0;
|
|
double indicatorRight = 400.0 - indicatorWeight / 2.0; // 400 = screen_width / 2
|
|
expect(tabBarBox, paints..line(
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
|
|
await tester.tap(find.text('RIGHT'));
|
|
await tester.pumpAndSettle();
|
|
expect(controller1.index, 0);
|
|
expect(controller2.index, 1);
|
|
|
|
// Verify that the TabBar's _IndicatorPainter is now listening to
|
|
// tabController2.
|
|
|
|
indicatorLeft = 400.0 + indicatorWeight / 2.0;
|
|
indicatorRight = 800.0 - indicatorWeight / 2.0;
|
|
expect(tabBarBox, paints..line(
|
|
strokeWidth: indicatorWeight,
|
|
p1: Offset(indicatorLeft, indicatorY),
|
|
p2: Offset(indicatorRight, indicatorY),
|
|
));
|
|
});
|
|
|
|
testWidgets('Default tab indicator color is white', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/15958
|
|
final List<String> tabs = <String>['LEFT', 'RIGHT'];
|
|
await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT'));
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
expect(tabBarBox, paints..line(
|
|
color: Colors.white,
|
|
));
|
|
});
|
|
|
|
testWidgets('Tab indicator color should not be adjusted when disable [automaticIndicatorColorAdjustment]', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/68077
|
|
final List<String> tabs = <String>['LEFT', 'RIGHT'];
|
|
await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT', automaticIndicatorColorAdjustment: false));
|
|
final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar));
|
|
expect(tabBarBox, paints..line(
|
|
color: const Color(0xff2196f3),
|
|
));
|
|
});
|
|
|
|
group('Tab feedback', () {
|
|
late FeedbackTester feedback;
|
|
|
|
setUp(() {
|
|
feedback = FeedbackTester();
|
|
});
|
|
|
|
tearDown(() {
|
|
feedback.dispose();
|
|
});
|
|
|
|
testWidgets('Tab feedback is enabled (default)', (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: const DefaultTabController(
|
|
length: 1,
|
|
child: TabBar(
|
|
tabs: <Tab>[
|
|
Tab(text: 'A'),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
await tester.tap(find.byType(InkWell), pointer: 1);
|
|
await tester.pump(const Duration(seconds: 1));
|
|
expect(feedback.clickSoundCount, 1);
|
|
expect(feedback.hapticCount, 0);
|
|
|
|
await tester.tap(find.byType(InkWell), pointer: 1);
|
|
await tester.pump(const Duration(seconds: 1));
|
|
expect(feedback.clickSoundCount, 2);
|
|
expect(feedback.hapticCount, 0);
|
|
});
|
|
|
|
testWidgets('Tab feedback is disabled', (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: const DefaultTabController(
|
|
length: 1,
|
|
child: TabBar(
|
|
tabs: <Tab>[
|
|
Tab(text: 'A'),
|
|
],
|
|
enableFeedback: false,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
await tester.tap(find.byType(InkWell), pointer: 1);
|
|
await tester.pump(const Duration(seconds: 1));
|
|
expect(feedback.clickSoundCount, 0);
|
|
expect(feedback.hapticCount, 0);
|
|
|
|
await tester.longPress(find.byType(InkWell), pointer: 1);
|
|
await tester.pump(const Duration(seconds: 1));
|
|
expect(feedback.clickSoundCount, 0);
|
|
expect(feedback.hapticCount, 0);
|
|
});
|
|
});
|
|
|
|
group('Tab overlayColor affects ink response', () {
|
|
testWidgets("Tab's ink well changes color on hover with Tab overlayColor", (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: DefaultTabController(
|
|
length: 1,
|
|
child: TabBar(
|
|
tabs: const <Tab>[
|
|
Tab(text: 'A'),
|
|
],
|
|
overlayColor: MaterialStateProperty.resolveWith<Color>(
|
|
(Set<MaterialState> states) {
|
|
if (states.contains(MaterialState.hovered))
|
|
return const Color(0xff00ff00);
|
|
if (states.contains(MaterialState.pressed))
|
|
return const Color(0xf00fffff);
|
|
return const Color(0xffbadbad); // Shouldn't happen.
|
|
},
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
|
|
await gesture.addPointer();
|
|
addTearDown(gesture.removePointer);
|
|
await gesture.moveTo(tester.getCenter(find.byType(Tab)));
|
|
await tester.pumpAndSettle();
|
|
final RenderObject inkFeatures = tester.allRenderObjects.firstWhere((RenderObject object) => object.runtimeType.toString() == '_RenderInkFeatures');
|
|
expect(inkFeatures, paints..rect(rect: const Rect.fromLTRB(0.0, 276.0, 800.0, 324.0), color: const Color(0xff00ff00)));
|
|
});
|
|
|
|
testWidgets(
|
|
"Tab's ink response splashColor matches resolved Tab overlayColor for MaterialState.pressed",
|
|
(WidgetTester tester) async {
|
|
const Color splashColor = Color(0xf00fffff);
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: DefaultTabController(
|
|
length: 1,
|
|
child: TabBar(
|
|
tabs: const <Tab>[
|
|
Tab(text: 'A'),
|
|
],
|
|
overlayColor: MaterialStateProperty.resolveWith<Color>(
|
|
(Set<MaterialState> states) {
|
|
if (states.contains(MaterialState.hovered))
|
|
return const Color(0xff00ff00);
|
|
if (states.contains(MaterialState.pressed))
|
|
return splashColor;
|
|
return const Color(0xffbadbad); // Shouldn't happen.
|
|
},
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
await tester.pumpAndSettle();
|
|
final TestGesture gesture = await tester.startGesture(tester.getRect(find.byType(InkWell)).center);
|
|
await tester.pump(const Duration(milliseconds: 200)); // unconfirmed splash is well underway
|
|
final RenderObject inkFeatures = tester.allRenderObjects.firstWhere((RenderObject object) => object.runtimeType.toString() == '_RenderInkFeatures');
|
|
expect(inkFeatures, paints..circle(x: 400, y: 24, color: splashColor));
|
|
await gesture.up();
|
|
},
|
|
);
|
|
});
|
|
testWidgets('Skipping tabs with global key does not crash', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/24660
|
|
final List<String> tabs = <String>[
|
|
'Tab1',
|
|
'Tab2',
|
|
'Tab3',
|
|
'Tab4',
|
|
];
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Align(
|
|
alignment: Alignment.topLeft,
|
|
child: SizedBox(
|
|
width: 300.0,
|
|
height: 200.0,
|
|
child: Scaffold(
|
|
appBar: AppBar(
|
|
title: const Text('tabs'),
|
|
bottom: TabBar(
|
|
controller: controller,
|
|
tabs: tabs.map<Widget>((String tab) => Tab(text: tab)).toList(),
|
|
),
|
|
),
|
|
body: TabBarView(
|
|
controller: controller,
|
|
children: <Widget>[
|
|
Text('1', key: GlobalKey()),
|
|
Text('2', key: GlobalKey()),
|
|
Text('3', key: GlobalKey()),
|
|
Text('4', key: GlobalKey()),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
expect(find.text('1'), findsOneWidget);
|
|
expect(find.text('4'), findsNothing);
|
|
await tester.tap(find.text('Tab4'));
|
|
await tester.pumpAndSettle();
|
|
expect(controller.index, 3);
|
|
expect(find.text('4'), findsOneWidget);
|
|
expect(find.text('1'), findsNothing);
|
|
});
|
|
|
|
testWidgets('Skipping tabs with a KeepAlive child works', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/11895
|
|
final List<String> tabs = <String>[
|
|
'Tab1',
|
|
'Tab2',
|
|
'Tab3',
|
|
'Tab4',
|
|
'Tab5',
|
|
];
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: tabs.length,
|
|
);
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Align(
|
|
alignment: Alignment.topLeft,
|
|
child: SizedBox(
|
|
width: 300.0,
|
|
height: 200.0,
|
|
child: Scaffold(
|
|
appBar: AppBar(
|
|
title: const Text('tabs'),
|
|
bottom: TabBar(
|
|
controller: controller,
|
|
tabs: tabs.map<Widget>((String tab) => Tab(text: tab)).toList(),
|
|
),
|
|
),
|
|
body: TabBarView(
|
|
controller: controller,
|
|
children: <Widget>[
|
|
AlwaysKeepAliveWidget(key: UniqueKey()),
|
|
const Text('2'),
|
|
const Text('3'),
|
|
const Text('4'),
|
|
const Text('5'),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
expect(find.text(AlwaysKeepAliveWidget.text), findsOneWidget);
|
|
expect(find.text('4'), findsNothing);
|
|
await tester.tap(find.text('Tab4'));
|
|
await tester.pumpAndSettle();
|
|
await tester.pump();
|
|
expect(controller.index, 3);
|
|
expect(find.text(AlwaysKeepAliveWidget.text, skipOffstage: false), findsOneWidget);
|
|
expect(find.text('4'), findsOneWidget);
|
|
});
|
|
|
|
testWidgets('tabbar does not scroll when viewport dimensions initially change from zero to non-zero', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/10531.
|
|
|
|
const List<Widget> tabs = <Widget>[
|
|
Tab(text: 'NEW MEXICO'),
|
|
Tab(text: 'GABBA'),
|
|
Tab(text: 'HEY'),
|
|
];
|
|
final TabController controller = TabController(vsync: const TestVSync(), length: tabs.length);
|
|
|
|
Widget buildTestWidget({double? width, double? height}) {
|
|
return MaterialApp(
|
|
home: Center(
|
|
child: SizedBox(
|
|
height: height,
|
|
width: width,
|
|
child: Scaffold(
|
|
appBar: AppBar(
|
|
title: const Text('AppBarBug'),
|
|
bottom: PreferredSize(
|
|
preferredSize: const Size.fromHeight(30.0),
|
|
child: Padding(
|
|
padding: const EdgeInsets.symmetric(horizontal: 15.0),
|
|
child: Align(
|
|
alignment: FractionalOffset.center,
|
|
child: TabBar(
|
|
controller: controller,
|
|
isScrollable: true,
|
|
tabs: tabs,
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
body: const Center(
|
|
child: Text('Hello World'),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
await tester.pumpWidget(
|
|
buildTestWidget(
|
|
width: 0.0,
|
|
height: 0.0,
|
|
),
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
buildTestWidget(
|
|
width: 300.0,
|
|
height: 400.0,
|
|
),
|
|
);
|
|
|
|
expect(tester.hasRunningAnimations, isFalse);
|
|
expect(await tester.pumpAndSettle(), 1); // no more frames are scheduled.
|
|
});
|
|
|
|
// Regression test for https://github.com/flutter/flutter/issues/20292.
|
|
testWidgets('Number of tabs can be updated dynamically', (WidgetTester tester) async {
|
|
final List<String> threeTabs = <String>['A', 'B', 'C'];
|
|
final List<String> twoTabs = <String>['A', 'B'];
|
|
final List<String> oneTab = <String>['A'];
|
|
final Key key = UniqueKey();
|
|
Widget buildTabs(List<String> tabs) {
|
|
return boilerplate(
|
|
child: DefaultTabController(
|
|
key: key,
|
|
length: tabs.length,
|
|
child: TabBar(
|
|
tabs: tabs.map<Widget>((String tab) => Tab(text: tab)).toList(),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
TabController getController() => DefaultTabController.of(tester.element(find.text('A')))!;
|
|
|
|
await tester.pumpWidget(buildTabs(threeTabs));
|
|
await tester.tap(find.text('B'));
|
|
await tester.pump();
|
|
TabController controller = getController();
|
|
expect(controller.previousIndex, 0);
|
|
expect(controller.index, 1);
|
|
expect(controller.length, 3);
|
|
|
|
await tester.pumpWidget(buildTabs(twoTabs));
|
|
controller = getController();
|
|
expect(controller.previousIndex, 0);
|
|
expect(controller.index, 1);
|
|
expect(controller.length, 2);
|
|
|
|
await tester.pumpWidget(buildTabs(oneTab));
|
|
controller = getController();
|
|
expect(controller.previousIndex, 1);
|
|
expect(controller.index, 0);
|
|
expect(controller.length, 1);
|
|
|
|
await tester.pumpWidget(buildTabs(twoTabs));
|
|
controller = getController();
|
|
expect(controller.previousIndex, 1);
|
|
expect(controller.index, 0);
|
|
expect(controller.length, 2);
|
|
});
|
|
|
|
// Regression test for https://github.com/flutter/flutter/issues/15008.
|
|
testWidgets('TabBar with one tab has correct color', (WidgetTester tester) async {
|
|
const Tab tab = Tab(text: 'A');
|
|
const Color selectedTabColor = Color(0x00000001);
|
|
const Color unselectedTabColor = Color(0x00000002);
|
|
|
|
await tester.pumpWidget(boilerplate(
|
|
child: const DefaultTabController(
|
|
length: 1,
|
|
child: TabBar(
|
|
tabs: <Tab>[tab],
|
|
labelColor: selectedTabColor,
|
|
unselectedLabelColor: unselectedTabColor,
|
|
),
|
|
),
|
|
));
|
|
|
|
final IconThemeData iconTheme = IconTheme.of(tester.element(find.text('A')));
|
|
expect(iconTheme.color, equals(selectedTabColor));
|
|
});
|
|
|
|
testWidgets('Replacing the tabController after disposing the old one', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/32428
|
|
|
|
TabController controller = TabController(vsync: const TestVSync(), length: 2);
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: StatefulBuilder(
|
|
builder: (BuildContext context, StateSetter setState) {
|
|
return Scaffold(
|
|
appBar: AppBar(
|
|
bottom: TabBar(
|
|
controller: controller,
|
|
tabs: List<Widget>.generate(controller.length, (int index) => Tab(text: 'Tab$index')),
|
|
),
|
|
actions: <Widget>[
|
|
TextButton(
|
|
child: const Text('Change TabController length'),
|
|
onPressed: () {
|
|
setState(() {
|
|
controller.dispose();
|
|
controller = TabController(vsync: const TestVSync(), length: 3);
|
|
});
|
|
},
|
|
),
|
|
],
|
|
),
|
|
body: TabBarView(
|
|
controller: controller,
|
|
children: List<Widget>.generate(controller.length, (int index) => Center(child: Text('Tab $index'))),
|
|
),
|
|
);
|
|
},
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(controller.index, 0);
|
|
expect(controller.length, 2);
|
|
expect(find.text('Tab0'), findsOneWidget);
|
|
expect(find.text('Tab1'), findsOneWidget);
|
|
expect(find.text('Tab2'), findsNothing);
|
|
|
|
await tester.tap(find.text('Change TabController length'));
|
|
await tester.pumpAndSettle();
|
|
expect(controller.index, 0);
|
|
expect(controller.length, 3);
|
|
expect(find.text('Tab0'), findsOneWidget);
|
|
expect(find.text('Tab1'), findsOneWidget);
|
|
expect(find.text('Tab2'), findsOneWidget);
|
|
});
|
|
|
|
testWidgets('DefaultTabController should allow for a length of zero', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/20292.
|
|
List<String> tabTextContent = <String>[];
|
|
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: StatefulBuilder(
|
|
builder: (BuildContext context, StateSetter setState) {
|
|
return DefaultTabController(
|
|
length: tabTextContent.length,
|
|
child: Scaffold(
|
|
appBar: AppBar(
|
|
title: const Text('Default TabBar Preview'),
|
|
bottom: tabTextContent.isNotEmpty
|
|
? TabBar(
|
|
isScrollable: true,
|
|
tabs: tabTextContent.map((String textContent) => Tab(text: textContent)).toList(),
|
|
)
|
|
: null,
|
|
),
|
|
body: tabTextContent.isNotEmpty
|
|
? TabBarView(
|
|
children: tabTextContent.map((String textContent) => Tab(text: "$textContent's view")).toList(),
|
|
)
|
|
: const Center(child: Text('No tabs')),
|
|
bottomNavigationBar: BottomAppBar(
|
|
child: Row(
|
|
mainAxisSize: MainAxisSize.max,
|
|
mainAxisAlignment: MainAxisAlignment.spaceBetween,
|
|
children: <Widget>[
|
|
IconButton(
|
|
key: const Key('Add tab'),
|
|
icon: const Icon(Icons.add),
|
|
onPressed: () {
|
|
setState(() {
|
|
tabTextContent = List<String>.from(tabTextContent)
|
|
..add('Tab ${tabTextContent.length + 1}');
|
|
});
|
|
},
|
|
),
|
|
IconButton(
|
|
key: const Key('Delete tab'),
|
|
icon: const Icon(Icons.delete),
|
|
onPressed: () {
|
|
setState(() {
|
|
tabTextContent = List<String>.from(tabTextContent)
|
|
..removeLast();
|
|
});
|
|
},
|
|
),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
},
|
|
),
|
|
),
|
|
);
|
|
|
|
// Initializes with zero tabs properly
|
|
expect(find.text('No tabs'), findsOneWidget);
|
|
await tester.tap(find.byKey(const Key('Add tab')));
|
|
await tester.pumpAndSettle();
|
|
expect(find.text('Tab 1'), findsOneWidget);
|
|
expect(find.text("Tab 1's view"), findsOneWidget);
|
|
|
|
// Dynamically updates to zero tabs properly
|
|
await tester.tap(find.byKey(const Key('Delete tab')));
|
|
await tester.pumpAndSettle();
|
|
expect(find.text('No tabs'), findsOneWidget);
|
|
});
|
|
|
|
testWidgets('TabBar - updating to and from zero tabs', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/68962.
|
|
final List<String> tabTitles = <String>[];
|
|
final List<Widget> tabContents = <Widget>[];
|
|
TabController _tabController = TabController(length: tabContents.length, vsync: const TestVSync());
|
|
|
|
void _onTabAdd(StateSetter setState) {
|
|
setState(() {
|
|
tabTitles.add('Tab ${tabTitles.length + 1}');
|
|
tabContents.add(
|
|
Container(
|
|
color: Colors.red,
|
|
height: 200,
|
|
width: 200,
|
|
),
|
|
);
|
|
_tabController = TabController(length: tabContents.length, vsync: const TestVSync());
|
|
});
|
|
}
|
|
|
|
void _onTabRemove(StateSetter setState) {
|
|
setState(() {
|
|
tabTitles.removeLast();
|
|
tabContents.removeLast();
|
|
_tabController = TabController(length: tabContents.length, vsync: const TestVSync());
|
|
});
|
|
}
|
|
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: StatefulBuilder(
|
|
builder: (BuildContext context, StateSetter setState) {
|
|
return Scaffold(
|
|
appBar: AppBar(
|
|
actions: <Widget>[
|
|
TextButton(
|
|
key: const Key('Add tab'),
|
|
child: const Text('Add tab'),
|
|
onPressed: () => _onTabAdd(setState),
|
|
),
|
|
TextButton(
|
|
key: const Key('Remove tab'),
|
|
child: const Text('Remove tab'),
|
|
onPressed: () => _onTabRemove(setState),
|
|
),
|
|
],
|
|
bottom: PreferredSize(
|
|
preferredSize: const Size.fromHeight(40.0),
|
|
child: Expanded(
|
|
child: TabBar(
|
|
controller: _tabController,
|
|
tabs: tabTitles
|
|
.map((String title) => Tab(text: title))
|
|
.toList(),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
},
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(find.text('Tab 1'), findsNothing);
|
|
expect(find.text('Add tab'), findsOneWidget);
|
|
await tester.tap(find.byKey(const Key('Add tab')));
|
|
await tester.pumpAndSettle();
|
|
expect(find.text('Tab 1'), findsOneWidget);
|
|
|
|
await tester.tap(find.byKey(const Key('Remove tab')));
|
|
await tester.pumpAndSettle();
|
|
expect(find.text('Tab 1'), findsNothing);
|
|
});
|
|
|
|
testWidgets('TabBar expands vertically to accommodate the Icon and child Text() pair the same amount it would expand for Icon and text pair.', (WidgetTester tester) async {
|
|
const double indicatorWeight = 2.0;
|
|
|
|
const List<Widget> tabListWithText = <Widget>[
|
|
Tab(icon: Icon(Icons.notifications), text: 'Test'),
|
|
];
|
|
const List<Widget> tabListWithTextChild = <Widget>[
|
|
Tab(icon: Icon(Icons.notifications), child: Text('Test')),
|
|
];
|
|
|
|
const TabBar tabBarWithText = TabBar(tabs: tabListWithText, indicatorWeight: indicatorWeight);
|
|
const TabBar tabBarWithTextChild = TabBar(tabs: tabListWithTextChild, indicatorWeight: indicatorWeight);
|
|
|
|
expect(tabBarWithText.preferredSize, tabBarWithTextChild.preferredSize);
|
|
});
|
|
|
|
testWidgets('Setting TabController index should make TabBar indicator immediately pop into the position', (WidgetTester tester) async {
|
|
const List<Tab> tabs = <Tab>[
|
|
Tab(text: 'A'), Tab(text: 'B'), Tab(text: 'C'),
|
|
];
|
|
const Color indicatorColor = Color(0xFFFF0000);
|
|
late TabController tabController;
|
|
|
|
Widget buildTabControllerFrame(BuildContext context, TabController controller) {
|
|
tabController = controller;
|
|
return MaterialApp(
|
|
home: Scaffold(
|
|
appBar: AppBar(
|
|
bottom: TabBar(
|
|
controller: controller,
|
|
tabs: tabs,
|
|
indicatorColor: indicatorColor,
|
|
),
|
|
),
|
|
body: TabBarView(
|
|
controller: controller,
|
|
children: tabs.map((Tab tab) {
|
|
return Center(child: Text(tab.text!));
|
|
}).toList(),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
await tester.pumpWidget(TabControllerFrame(
|
|
builder: buildTabControllerFrame,
|
|
length: tabs.length,
|
|
initialIndex: 0,
|
|
));
|
|
|
|
final RenderBox box = tester.renderObject(find.byType(TabBar));
|
|
final TabIndicatorRecordingCanvas canvas = TabIndicatorRecordingCanvas(indicatorColor);
|
|
final TestRecordingPaintingContext context = TestRecordingPaintingContext(canvas);
|
|
|
|
box.paint(context, Offset.zero);
|
|
double expectedIndicatorLeft = canvas.indicatorRect.left;
|
|
|
|
final PageView pageView = tester.widget(find.byType(PageView));
|
|
final PageController pageController = pageView.controller;
|
|
void pageControllerListener() {
|
|
// Whenever TabBarView scrolls due to changing TabController's index,
|
|
// check if indicator stays idle in its expectedIndicatorLeft
|
|
box.paint(context, Offset.zero);
|
|
expect(canvas.indicatorRect.left, expectedIndicatorLeft);
|
|
}
|
|
|
|
// Moving from index 0 to 2 (distanced tabs)
|
|
tabController.index = 2;
|
|
box.paint(context, Offset.zero);
|
|
expectedIndicatorLeft = canvas.indicatorRect.left;
|
|
pageController.addListener(pageControllerListener);
|
|
await tester.pumpAndSettle();
|
|
|
|
// Moving from index 2 to 1 (neighboring tabs)
|
|
tabController.index = 1;
|
|
box.paint(context, Offset.zero);
|
|
expectedIndicatorLeft = canvas.indicatorRect.left;
|
|
await tester.pumpAndSettle();
|
|
pageController.removeListener(pageControllerListener);
|
|
});
|
|
|
|
testWidgets('Setting BouncingScrollPhysics on TabBarView does not include ClampingScrollPhysics', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/57708
|
|
await tester.pumpWidget(MaterialApp(
|
|
home: DefaultTabController(
|
|
length: 10,
|
|
child: Scaffold(
|
|
body: TabBarView(
|
|
physics: const BouncingScrollPhysics(),
|
|
children: List<Widget>.generate(10, (int i) => Center(child: Text('index $i'))),
|
|
),
|
|
),
|
|
),
|
|
));
|
|
|
|
final PageView pageView = tester.widget<PageView>(find.byType(PageView));
|
|
expect(pageView.physics.toString().contains('ClampingScrollPhysics'), isFalse);
|
|
});
|
|
|
|
testWidgets('TabController changes offset attribute', (WidgetTester tester) async {
|
|
final TabController controller = TabController(
|
|
vsync: const TestVSync(),
|
|
length: 2,
|
|
);
|
|
|
|
late Color firstColor;
|
|
late Color secondColor;
|
|
|
|
await tester.pumpWidget(
|
|
boilerplate(
|
|
child: TabBar(
|
|
controller: controller,
|
|
labelColor: Colors.white,
|
|
unselectedLabelColor: Colors.black,
|
|
tabs: <Widget>[
|
|
Builder(builder: (BuildContext context) {
|
|
firstColor = DefaultTextStyle.of(context).style.color!;
|
|
return const Text('First');
|
|
}),
|
|
Builder(builder: (BuildContext context) {
|
|
secondColor = DefaultTextStyle.of(context).style.color!;
|
|
return const Text('Second');
|
|
}),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(firstColor, equals(Colors.white));
|
|
expect(secondColor, equals(Colors.black));
|
|
|
|
controller.offset = 0.6;
|
|
await tester.pump();
|
|
|
|
expect(firstColor, equals(Color.lerp(Colors.white, Colors.black, 0.6)));
|
|
expect(secondColor, equals(Color.lerp(Colors.black, Colors.white, 0.6)));
|
|
|
|
controller.index = 1;
|
|
await tester.pump();
|
|
|
|
expect(firstColor, equals(Colors.black));
|
|
expect(secondColor, equals(Colors.white));
|
|
|
|
controller.offset = 0.6;
|
|
await tester.pump();
|
|
|
|
expect(firstColor, equals(Colors.black));
|
|
expect(secondColor, equals(Colors.white));
|
|
});
|
|
|
|
testWidgets('Crash on dispose', (WidgetTester tester) async {
|
|
await tester.pumpWidget(const Padding(padding: EdgeInsets.only(right: 200.0), child: TabBarDemo()));
|
|
await tester.tap(find.byIcon(Icons.directions_bike));
|
|
// There was a time where this would throw an exception
|
|
// because we tried to send a notification on dispose.
|
|
});
|
|
|
|
testWidgets("TabController's animation value should be in sync with TabBarView's scroll value when user interrupts ballistic scroll", (WidgetTester tester) async {
|
|
final TabController tabController = TabController(
|
|
vsync: const TestVSync(),
|
|
length: 3,
|
|
);
|
|
|
|
await tester.pumpWidget(Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: SizedBox.expand(
|
|
child: Center(
|
|
child: SizedBox(
|
|
width: 400.0,
|
|
height: 400.0,
|
|
child: TabBarView(
|
|
controller: tabController,
|
|
children: const <Widget>[
|
|
Center(child: Text('0')),
|
|
Center(child: Text('1')),
|
|
Center(child: Text('2')),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
));
|
|
|
|
final PageView pageView = tester.widget(find.byType(PageView));
|
|
final PageController pageController = pageView.controller;
|
|
final ScrollPosition position = pageController.position;
|
|
|
|
expect(tabController.index, 0);
|
|
expect(position.pixels, 0.0);
|
|
|
|
pageController.jumpTo(300.0);
|
|
await tester.pump();
|
|
expect(tabController.animation!.value, pageController.page);
|
|
|
|
// Touch TabBarView while ballistic scrolling is happening and
|
|
// check if tabController's animation value properly follows page value.
|
|
await tester.startGesture(tester.getCenter(find.byType(PageView)));
|
|
await tester.pump();
|
|
expect(tabController.animation!.value, pageController.page);
|
|
});
|
|
|
|
testWidgets('Does not instantiate intermediate tabs during animation', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/14316.
|
|
final List<String> log = <String>[];
|
|
await tester.pumpWidget(MaterialApp(
|
|
home: DefaultTabController(
|
|
length: 5,
|
|
child: Scaffold(
|
|
appBar: AppBar(
|
|
bottom: const TabBar(
|
|
tabs: <Widget>[
|
|
Tab(text: 'car'),
|
|
Tab(text: 'transit'),
|
|
Tab(text: 'bike'),
|
|
Tab(text: 'boat'),
|
|
Tab(text: 'bus'),
|
|
],
|
|
),
|
|
title: const Text('Tabs Test'),
|
|
),
|
|
body: TabBarView(
|
|
children: <Widget>[
|
|
TabBody(index: 0, log: log),
|
|
TabBody(index: 1, log: log),
|
|
TabBody(index: 2, log: log),
|
|
TabBody(index: 3, log: log),
|
|
TabBody(index: 4, log: log),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
));
|
|
|
|
expect(find.text('0'), findsOneWidget);
|
|
expect(find.text('3'), findsNothing);
|
|
expect(log, <String>['init: 0']);
|
|
|
|
await tester.tap(find.text('boat'));
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(find.text('0'), findsNothing);
|
|
expect(find.text('3'), findsOneWidget);
|
|
|
|
// No other tab got instantiated during the animation.
|
|
expect(log, <String>['init: 0', 'init: 3', 'dispose: 0']);
|
|
});
|
|
|
|
testWidgets("TabController's animation value should be updated when TabController's index >= tabs's length", (WidgetTester tester) async {
|
|
// This is a regression test for the issue brought up here
|
|
// https://github.com/flutter/flutter/issues/79226
|
|
|
|
final List<String> tabs = <String>['A', 'B', 'C'];
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: StatefulBuilder(
|
|
builder: (BuildContext context, StateSetter setState) {
|
|
return DefaultTabController(
|
|
length: tabs.length,
|
|
child: Scaffold(
|
|
appBar: AppBar(
|
|
bottom: TabBar(
|
|
tabs: tabs.map<Widget>((String tab) => Tab(text: tab)).toList(),
|
|
),
|
|
actions: <Widget>[
|
|
TextButton(
|
|
child: const Text('Remove Last Tab'),
|
|
onPressed: () {
|
|
setState(() {
|
|
tabs.removeLast();
|
|
});
|
|
},
|
|
),
|
|
],
|
|
),
|
|
body: TabBarView(
|
|
children: tabs.map<Widget>((String tab) => Tab(text: 'Tab child $tab')).toList(),
|
|
),
|
|
),
|
|
);
|
|
},
|
|
),
|
|
),
|
|
);
|
|
|
|
TabController getController() => DefaultTabController.of(tester.element(find.text('B')))!;
|
|
TabController controller = getController();
|
|
|
|
controller.animateTo(2, duration: const Duration(milliseconds: 200), curve: Curves.linear);
|
|
await tester.pump();
|
|
await tester.pump(const Duration(milliseconds: 300));
|
|
|
|
controller = getController();
|
|
expect(controller.index, 2);
|
|
expect(controller.animation!.value, 2);
|
|
|
|
await tester.tap(find.text('Remove Last Tab'));
|
|
await tester.pumpAndSettle();
|
|
|
|
controller = getController();
|
|
expect(controller.index, 1);
|
|
expect(controller.animation!.value, 1);
|
|
});
|
|
|
|
testWidgets('Tab preferredSize gives correct value', (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Material(
|
|
child: Row(
|
|
children: const <Tab>[
|
|
Tab(icon: Icon(Icons.message)),
|
|
Tab(text: 'Two'),
|
|
Tab(text: 'Three', icon: Icon(Icons.chat)),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final Tab firstTab = tester.widget(find.widgetWithIcon(Tab, Icons.message));
|
|
final Tab secondTab = tester.widget(find.widgetWithText(Tab, 'Two'));
|
|
final Tab thirdTab = tester.widget(find.widgetWithText(Tab, 'Three'));
|
|
|
|
expect(firstTab.preferredSize, const Size.fromHeight(46.0));
|
|
expect(secondTab.preferredSize, const Size.fromHeight(46.0));
|
|
expect(thirdTab.preferredSize, const Size.fromHeight(72.0));
|
|
});
|
|
|
|
testWidgets('TabBar preferredSize gives correct value when there are both icon and text in tabs', (WidgetTester tester) async {
|
|
await tester.pumpWidget(MaterialApp(
|
|
home: DefaultTabController(
|
|
length: 5,
|
|
child: Scaffold(
|
|
appBar: AppBar(
|
|
bottom: const TabBar(
|
|
tabs: <Widget>[
|
|
Tab(text: 'car'),
|
|
Tab(text: 'transit'),
|
|
Tab(text: 'bike'),
|
|
Tab(text: 'boat', icon: Icon(Icons.message)),
|
|
Tab(text: 'bus'),
|
|
],
|
|
),
|
|
title: const Text('Tabs Test'),
|
|
),
|
|
),
|
|
),
|
|
));
|
|
|
|
final TabBar tabBar = tester.widget(find.widgetWithText(TabBar, 'car'));
|
|
|
|
expect(tabBar.preferredSize, const Size.fromHeight(74.0));
|
|
});
|
|
|
|
testWidgets('TabBar preferredSize gives correct value when there is only icon or text in tabs', (WidgetTester tester) async {
|
|
await tester.pumpWidget(MaterialApp(
|
|
home: DefaultTabController(
|
|
length: 5,
|
|
child: Scaffold(
|
|
appBar: AppBar(
|
|
bottom: const TabBar(
|
|
tabs: <Widget>[
|
|
Tab(text: 'car'),
|
|
Tab(icon: Icon(Icons.message)),
|
|
Tab(text: 'bike'),
|
|
Tab(icon: Icon(Icons.chat)),
|
|
Tab(text: 'bus'),
|
|
],
|
|
),
|
|
title: const Text('Tabs Test'),
|
|
),
|
|
),
|
|
),
|
|
));
|
|
|
|
final TabBar tabBar = tester.widget(find.widgetWithText(TabBar, 'car'));
|
|
|
|
expect(tabBar.preferredSize, const Size.fromHeight(48.0));
|
|
});
|
|
|
|
testWidgets('Tabs are given uniform padding in case of few tabs having both text and icon', (WidgetTester tester) async {
|
|
const EdgeInsetsGeometry expectedPaddingAdjusted = EdgeInsets.symmetric(vertical: 13.0, horizontal: 16.0);
|
|
const EdgeInsetsGeometry expectedPaddingDefault = EdgeInsets.symmetric(vertical: 0.0, horizontal: 16.0);
|
|
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Scaffold(
|
|
appBar: AppBar(
|
|
bottom: TabBar(
|
|
controller: TabController(length: 3, vsync: const TestVSync()),
|
|
tabs: const <Widget>[
|
|
Tab(text: 'Tab 1', icon: Icon(Icons.plus_one)),
|
|
Tab(text: 'Tab 2'),
|
|
Tab(text: 'Tab 3'),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final Padding tabOne = tester.widget<Padding>(find.widgetWithText(Padding, 'Tab 1').first);
|
|
final Padding tabTwo = tester.widget<Padding>(find.widgetWithText(Padding, 'Tab 2').first);
|
|
final Padding tabThree = tester.widget<Padding>(find.widgetWithText(Padding, 'Tab 3').first);
|
|
|
|
expect(tabOne.padding, expectedPaddingDefault);
|
|
expect(tabTwo.padding, expectedPaddingAdjusted);
|
|
expect(tabThree.padding, expectedPaddingAdjusted);
|
|
});
|
|
|
|
testWidgets('Tabs are given uniform padding when labelPadding is given', (WidgetTester tester) async {
|
|
const EdgeInsetsGeometry labelPadding = EdgeInsets.symmetric(vertical: 10.0, horizontal: 20.0);
|
|
const EdgeInsetsGeometry expectedPaddingAdjusted = EdgeInsets.symmetric(vertical: 23.0, horizontal: 20.0);
|
|
const EdgeInsetsGeometry expectedPaddingDefault = EdgeInsets.symmetric(vertical: 10.0, horizontal: 20.0);
|
|
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Scaffold(
|
|
appBar: AppBar(
|
|
bottom: TabBar(
|
|
labelPadding: labelPadding,
|
|
controller: TabController(length: 3, vsync: const TestVSync()),
|
|
tabs: const <Widget>[
|
|
Tab(text: 'Tab 1', icon: Icon(Icons.plus_one)),
|
|
Tab(text: 'Tab 2'),
|
|
Tab(text: 'Tab 3'),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final Padding tabOne = tester.widget<Padding>(find.widgetWithText(Padding, 'Tab 1').first);
|
|
final Padding tabTwo = tester.widget<Padding>(find.widgetWithText(Padding, 'Tab 2').first);
|
|
final Padding tabThree = tester.widget<Padding>(find.widgetWithText(Padding, 'Tab 3').first);
|
|
|
|
expect(tabOne.padding, expectedPaddingDefault);
|
|
expect(tabTwo.padding, expectedPaddingAdjusted);
|
|
expect(tabThree.padding, expectedPaddingAdjusted);
|
|
});
|
|
|
|
testWidgets('Tabs are given uniform padding TabBarTheme.labelPadding is given', (WidgetTester tester) async {
|
|
const EdgeInsetsGeometry labelPadding = EdgeInsets.symmetric(vertical: 15.0, horizontal: 20);
|
|
const EdgeInsetsGeometry expectedPaddingAdjusted = EdgeInsets.symmetric(vertical: 28.0, horizontal: 20.0);
|
|
const EdgeInsetsGeometry expectedPaddingDefault = EdgeInsets.symmetric(vertical: 15.0, horizontal: 20.0);
|
|
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
theme: ThemeData(
|
|
tabBarTheme: const TabBarTheme(labelPadding: labelPadding),
|
|
),
|
|
home: Scaffold(
|
|
appBar: AppBar(
|
|
bottom: TabBar(
|
|
controller: TabController(length: 3, vsync: const TestVSync()),
|
|
tabs: const <Widget>[
|
|
Tab(text: 'Tab 1', icon: Icon(Icons.plus_one)),
|
|
Tab(text: 'Tab 2'),
|
|
Tab(text: 'Tab 3'),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final Padding tabOne = tester.widget<Padding>(find.widgetWithText(Padding, 'Tab 1').first);
|
|
final Padding tabTwo = tester.widget<Padding>(find.widgetWithText(Padding, 'Tab 2').first);
|
|
final Padding tabThree = tester.widget<Padding>(find.widgetWithText(Padding, 'Tab 3').first);
|
|
|
|
expect(tabOne.padding, expectedPaddingDefault);
|
|
expect(tabTwo.padding, expectedPaddingAdjusted);
|
|
expect(tabThree.padding, expectedPaddingAdjusted);
|
|
});
|
|
}
|
|
|
|
class KeepAliveInk extends StatefulWidget {
|
|
const KeepAliveInk(this.title, {Key? key}) : super(key: key);
|
|
final String title;
|
|
@override
|
|
State<StatefulWidget> createState() {
|
|
return _KeepAliveInkState();
|
|
}
|
|
}
|
|
|
|
class _KeepAliveInkState extends State<KeepAliveInk> with AutomaticKeepAliveClientMixin {
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
super.build(context);
|
|
return Ink(
|
|
child: Text(widget.title),
|
|
);
|
|
}
|
|
|
|
@override
|
|
bool get wantKeepAlive => true;
|
|
}
|
|
|
|
class TabBarDemo extends StatelessWidget {
|
|
const TabBarDemo({Key? key}) : super(key: key);
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return MaterialApp(
|
|
home: DefaultTabController(
|
|
length: 3,
|
|
child: Scaffold(
|
|
appBar: AppBar(
|
|
bottom: const TabBar(
|
|
tabs: <Widget>[
|
|
Tab(icon: Icon(Icons.directions_car)),
|
|
Tab(icon: Icon(Icons.directions_transit)),
|
|
Tab(icon: Icon(Icons.directions_bike)),
|
|
],
|
|
),
|
|
title: const Text('Tabs Demo'),
|
|
),
|
|
body: const TabBarView(
|
|
children: <Widget>[
|
|
Icon(Icons.directions_car),
|
|
Icon(Icons.directions_transit),
|
|
Icon(Icons.directions_bike),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class MockScrollMetrics extends Fake implements ScrollMetrics {}
|
|
|
|
class TabBody extends StatefulWidget {
|
|
const TabBody({ Key? key, required this.index, required this.log }) : super(key: key);
|
|
|
|
final int index;
|
|
final List<String> log;
|
|
|
|
@override
|
|
State<TabBody> createState() => TabBodyState();
|
|
}
|
|
|
|
class TabBodyState extends State<TabBody> {
|
|
@override
|
|
void initState() {
|
|
widget.log.add('init: ${widget.index}');
|
|
super.initState();
|
|
}
|
|
|
|
@override
|
|
void didUpdateWidget(TabBody oldWidget) {
|
|
super.didUpdateWidget(oldWidget);
|
|
// To keep the logging straight, widgets must not change their index.
|
|
assert(oldWidget.index == widget.index);
|
|
}
|
|
|
|
@override
|
|
void dispose() {
|
|
widget.log.add('dispose: ${widget.index}');
|
|
super.dispose();
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Center(
|
|
child: Text('${widget.index}'),
|
|
);
|
|
}
|
|
}
|