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2c21d795a4
This patch adds `@checked` everywhere is needed to remove the `strong_mode_invalid_method_override` strong mode error.
111 lines
3.4 KiB
Dart
111 lines
3.4 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_test/flutter_test.dart';
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import 'package:flutter/widgets.dart';
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class TestScrollConfigurationDelegate extends ScrollConfigurationDelegate {
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TestScrollConfigurationDelegate(this.flag);
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final bool flag;
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@override
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TargetPlatform get platform => defaultTargetPlatform;
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@override
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ExtentScrollBehavior createScrollBehavior() {
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return flag
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? new BoundedBehavior(platform: platform)
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: new UnboundedBehavior(platform: platform);
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}
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@override
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bool updateShouldNotify(TestScrollConfigurationDelegate old) => flag != old.flag;
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}
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void main() {
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test('BoundedBehavior min scroll offset', () {
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BoundedBehavior behavior = new BoundedBehavior(
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contentExtent: 150.0,
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containerExtent: 75.0,
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minScrollOffset: -100.0,
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platform: TargetPlatform.iOS
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);
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expect(behavior.minScrollOffset, equals(-100.0));
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expect(behavior.maxScrollOffset, equals(-25.0));
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double scrollOffset = behavior.updateExtents(
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contentExtent: 125.0,
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containerExtent: 50.0,
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scrollOffset: -80.0
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);
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expect(behavior.minScrollOffset, equals(-100.0));
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expect(behavior.maxScrollOffset, equals(-25.0));
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expect(scrollOffset, equals(-80.0));
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scrollOffset = behavior.updateExtents(
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minScrollOffset: 50.0,
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scrollOffset: scrollOffset
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);
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expect(behavior.minScrollOffset, equals(50.0));
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expect(behavior.maxScrollOffset, equals(125.0));
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expect(scrollOffset, equals(50.0));
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});
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testWidgets('Inherited ScrollConfiguration changed', (WidgetTester tester) async {
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final GlobalKey scrollableKey = new GlobalKey(debugLabel: 'scrollable');
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TestScrollConfigurationDelegate delegate;
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ExtentScrollBehavior behavior;
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await tester.pumpWidget(
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new ScrollConfiguration(
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delegate: new TestScrollConfigurationDelegate(true),
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child: new ScrollableViewport(
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scrollableKey: scrollableKey,
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child: new Builder(
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builder: (BuildContext context) {
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delegate = ScrollConfiguration.of(context);
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behavior = Scrollable.of(context).scrollBehavior;
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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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)
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);
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expect(delegate, isNotNull);
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expect(delegate.flag, isTrue);
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expect(behavior, new isInstanceOf<BoundedBehavior>());
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expect(behavior.contentExtent, equals(1000.0));
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expect(behavior.containerExtent, 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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delegate: new TestScrollConfigurationDelegate(false),
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child: new ScrollableViewport(
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scrollableKey: scrollableKey,
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child: new Builder(
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builder: (BuildContext context) {
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delegate = ScrollConfiguration.of(context);
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behavior = Scrollable.of(context).scrollBehavior;
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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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)
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);
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expect(delegate, isNotNull);
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expect(delegate.flag, isFalse);
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expect(behavior, new isInstanceOf<UnboundedBehavior>());
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// Regression test for https://github.com/flutter/flutter/issues/5856
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expect(behavior.contentExtent, equals(1000.0));
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expect(behavior.containerExtent, equals(600.0));
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});
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}
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