// Copyright 2015 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_test/flutter_test.dart'; import 'package:flutter/widgets.dart'; void main() { testWidgets('Scroll flings twice in a row does not crash', (WidgetTester tester) async { await tester.pumpWidget(new ListView( children: <Widget>[ new Container(height: 100000.0) ] )); final ScrollableState scrollable = tester.state<ScrollableState>(find.byType(Scrollable)); expect(scrollable.position.pixels, equals(0.0)); await tester.flingFrom(const Offset(200.0, 300.0), const Offset(0.0, -200.0), 500.0); await tester.pump(); await tester.pump(const Duration(seconds: 5)); expect(scrollable.position.pixels, greaterThan(0.0)); final double oldOffset = scrollable.position.pixels; await tester.flingFrom(const Offset(200.0, 300.0), const Offset(0.0, -200.0), 500.0); await tester.pump(); await tester.pump(const Duration(seconds: 5)); expect(scrollable.position.pixels, greaterThan(oldOffset)); }); }