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// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import 'package:flutter_api_samples/material/tabs/tab_bar.1.dart' as example;
import 'package:flutter_test/flutter_test.dart';
void main() {
testWidgets('Switch tabs in the TabBar', (WidgetTester tester) async {
await tester.pumpWidget(
const example.TabBarApp(),
);
final TabBar tabBar = tester.widget<TabBar>(find.byType(TabBar));
expect(tabBar.tabs.length, 3);
final Finder tab1 = find.widgetWithIcon(Tab, Icons.cloud_outlined);
final Finder tab2 = find.widgetWithIcon(Tab, Icons.beach_access_sharp);
final Finder tab3 = find.widgetWithIcon(Tab, Icons.brightness_5_sharp);
const String tabBarViewText1 = "It's cloudy here";
const String tabBarViewText2 = "It's rainy here";
const String tabBarViewText3 = "It's sunny here";
expect(find.text(tabBarViewText1), findsOneWidget);
expect(find.text(tabBarViewText2), findsNothing);
expect(find.text(tabBarViewText3), findsNothing);
await tester.tap(tab1);
await tester.pumpAndSettle();
expect(find.text(tabBarViewText1), findsOneWidget);
expect(find.text(tabBarViewText2), findsNothing);
expect(find.text(tabBarViewText3), findsNothing);
await tester.tap(tab2);
await tester.pumpAndSettle();
expect(find.text(tabBarViewText1), findsNothing);
expect(find.text(tabBarViewText2), findsOneWidget);
expect(find.text(tabBarViewText3), findsNothing);
await tester.tap(tab3);
await tester.pumpAndSettle();
expect(find.text(tabBarViewText1), findsNothing);
expect(find.text(tabBarViewText2), findsNothing);
expect(find.text(tabBarViewText3), findsOneWidget);
});
}