| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'package:flutter/cupertino.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| import '../rendering/mock_canvas.dart'; |
| |
| void main() { |
| testWidgets('Scrollbar never goes away until finger lift', (WidgetTester tester) async { |
| await tester.pumpWidget(const Directionality( |
| textDirection: TextDirection.ltr, |
| child: CupertinoScrollbar( |
| child: SingleChildScrollView( |
| child: SizedBox(width: 4000.0, height: 4000.0), |
| ), |
| ), |
| )); |
| final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(SingleChildScrollView))); |
| await gesture.moveBy(const Offset(0.0, -10.0)); |
| await tester.pump(); |
| // Scrollbar fully showing |
| await tester.pump(const Duration(milliseconds: 500)); |
| expect(find.byType(CupertinoScrollbar), paints..rrect( |
| color: const Color(0x99777777), |
| )); |
| |
| await tester.pump(const Duration(seconds: 3)); |
| await tester.pump(const Duration(seconds: 3)); |
| // Still there. |
| expect(find.byType(CupertinoScrollbar), paints..rrect( |
| color: const Color(0x99777777), |
| )); |
| |
| await gesture.up(); |
| await tester.pump(const Duration(milliseconds: 200)); |
| await tester.pump(const Duration(milliseconds: 200)); |
| |
| // Opacity going down now. |
| expect(find.byType(CupertinoScrollbar), paints..rrect( |
| color: const Color(0x15777777), |
| )); |
| }); |
| |
| testWidgets('Scrollbar is not smaller than minLength with large scroll views', |
| (WidgetTester tester) async { |
| await tester.pumpWidget(const Directionality( |
| textDirection: TextDirection.ltr, |
| child: CupertinoScrollbar( |
| child: SingleChildScrollView( |
| child: SizedBox(width: 800.0, height: 20000.0), |
| ), |
| ), |
| )); |
| final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(SingleChildScrollView))); |
| await gesture.moveBy(const Offset(0.0, -10.0)); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 200)); |
| |
| // Height is 36.0. |
| final Rect scrollbarRect = Rect.fromLTWH(795.0, 4.28659793814433, 2.5, 36.0); |
| expect(find.byType(CupertinoScrollbar), paints..rrect( |
| rrect: RRect.fromRectAndRadius(scrollbarRect, const Radius.circular(1.25)), |
| )); |
| }); |
| } |