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e0b12ca17e
Rename all the "2" classes related to scrolling to remove the "2". Now that the old scrolling code is gone, we don't need to use the suffix.
72 lines
2.1 KiB
Dart
72 lines
2.1 KiB
Dart
// Copyright 2015 The Chromium 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/widgets.dart';
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import 'package:flutter_test/flutter_test.dart';
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class TestScrollBehavior extends ScrollBehavior {
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TestScrollBehavior(this.flag);
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final bool flag;
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@override
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ScrollPhysics getScrollPhysics(BuildContext context) {
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return flag
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? const ClampingScrollPhysics()
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: const BouncingScrollPhysics();
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}
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@override
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bool shouldNotify(TestScrollBehavior old) => flag != old.flag;
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}
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void main() {
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testWidgets('Inherited ScrollConfiguration changed', (WidgetTester tester) async {
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final GlobalKey key = new GlobalKey(debugLabel: 'scrollable');
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TestScrollBehavior behavior;
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ScrollPosition position;
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Widget scrollView = new SingleChildScrollView(
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key: key,
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child: new Builder(
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builder: (BuildContext context) {
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behavior = ScrollConfiguration.of(context);
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position = Scrollable.of(context).position;
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return new Container(height: 1000.0);
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},
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),
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);
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await tester.pumpWidget(
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new ScrollConfiguration(
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behavior: new TestScrollBehavior(true),
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child: scrollView,
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),
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);
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expect(behavior, isNotNull);
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expect(behavior.flag, isTrue);
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expect(position.physics, const isInstanceOf<ClampingScrollPhysics>());
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ScrollMetrics metrics = position.getMetrics();
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expect(metrics.extentAfter, equals(400.0));
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expect(metrics.viewportDimension, equals(600.0));
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// Same Scrollable, different ScrollConfiguration
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await tester.pumpWidget(
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new ScrollConfiguration(
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behavior: new TestScrollBehavior(false),
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child: scrollView,
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),
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);
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expect(behavior, isNotNull);
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expect(behavior.flag, isFalse);
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expect(position.physics, const isInstanceOf<BouncingScrollPhysics>());
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// Regression test for https://github.com/flutter/flutter/issues/5856
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metrics = position.getMetrics();
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expect(metrics.extentAfter, equals(400.0));
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expect(metrics.viewportDimension, equals(600.0));
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});
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}
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