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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_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(
Directionality(
textDirection: TextDirection.ltr,
child: ListView(
children: <Widget>[
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));
});
}