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3a43fc88b6
This patch removes unnecessary uses of scrollableKey from tests. Scrollable2 will likely use a different mechanism for identifying itself, so we want to focus on the uses of scrollableKey that will need to be addressed in the new implementation.
112 lines
3.4 KiB
Dart
112 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/foundation.dart' show defaultTargetPlatform;
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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 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 key = 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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key: key,
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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, const 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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key: key,
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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, const 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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