// 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/widgets.dart'; import 'package:test/test.dart'; void main() { test('BoundedBehavior min scroll offset', () { BoundedBehavior behavior = new BoundedBehavior( contentExtent: 150.0, containerExtent: 75.0, minScrollOffset: -100.0 ); expect(behavior.minScrollOffset, equals(-100.0)); expect(behavior.maxScrollOffset, equals(-25.0)); double scrollOffset = behavior.updateExtents( contentExtent: 125.0, containerExtent: 50.0, scrollOffset: -80.0 ); expect(behavior.minScrollOffset, equals(-100.0)); expect(behavior.maxScrollOffset, equals(-25.0)); expect(scrollOffset, equals(-80.0)); scrollOffset = behavior.updateExtents( minScrollOffset: 50.0, scrollOffset: scrollOffset ); expect(behavior.minScrollOffset, equals(50.0)); expect(behavior.maxScrollOffset, equals(125.0)); expect(scrollOffset, equals(50.0)); }); }