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8f797fc379
Reverts flutter/flutter#141138 Initiated by: itsjustkevin This change reverts the following previous change: Original Description: Fixes https://github.com/flutter/flutter/issues/141119 The change is breaking, because now controller is nullable. Migration path: https://github.com/flutter/website/pull/10033 Packages to fix:
67 lines
2.7 KiB
Dart
67 lines
2.7 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/material.dart';
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import 'package:flutter_api_samples/widgets/page_view/page_view.0.dart' as example;
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets('PageView swipe gestures on mobile platforms', (WidgetTester tester) async {
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await tester.pumpWidget(
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const example.PageViewExampleApp(),
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);
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// Verify that first page is shown initially.
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expect(find.text('First Page'), findsOneWidget);
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// Swipe to the left.
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await tester.fling(find.text('First Page'), const Offset(-300.0, 0.0), 3000);
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await tester.pumpAndSettle();
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// Verify that the second page is shown.
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expect(find.text('Second Page'), findsOneWidget);
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// Swipe back to the right.
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await tester.fling(find.text('Second Page'), const Offset(300.0, 0.0), 3000);
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await tester.pumpAndSettle();
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// Verify that first page is shown.
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expect(find.text('First Page'), findsOneWidget);
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}, variant: TargetPlatformVariant.mobile());
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testWidgets('PageView navigation using forward/backward buttons on desktop platforms', (WidgetTester tester) async {
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await tester.pumpWidget(
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const example.PageViewExampleApp(),
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);
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// Verify that first page is shown along with forward/backward buttons in page indicator.
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expect(find.text('First Page'), findsOneWidget);
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expect(find.byType(TabPageSelector), findsOneWidget);
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// Tap forward button on page indicator area.
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await tester.tap(find.byIcon(Icons.arrow_right_rounded));
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await tester.pumpAndSettle();
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// Verify that second page is shown.
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expect(find.text('Second Page'), findsOneWidget);
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// Verify that page indicator index is updated.
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final TabPageSelector pageIndicator = tester.widget<TabPageSelector>(find.byType(TabPageSelector));
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expect(pageIndicator.controller?.index, 1);
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// Verify that page view index is also updated with same index to page indicator.
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final PageView pageView = tester.widget<PageView>(find.byType(PageView));
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expect(pageView.controller.page, 1);
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// Tap backward button on page indicator area.
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await tester.tap(find.byIcon(Icons.arrow_left_rounded));
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await tester.pumpAndSettle();
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// Verify that first page is shown.
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expect(find.text('First Page'), findsOneWidget);
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// Tap backward button one more time.
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await tester.tap(find.byIcon(Icons.arrow_left_rounded));
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await tester.pumpAndSettle();
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// Verify that first page is still shown.
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expect(find.text('First Page'), findsOneWidget);
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}, variant: TargetPlatformVariant.desktop());
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}
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