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042eaf6b90
This PR adds an another example for SliverAppBar, showing the use of stretch and onStretchTrigger https://user-images.githubusercontent.com/68919043/235420973-2bfb9871-9e05-4d87-9538-941d43178c76.mp4 Fixes #125651 ### Adds sample code for SliverAppBar [stretch, onStretchTrigger] This PR adds an another simple and easily understandable example code for SliverAppBar.
47 lines
1.7 KiB
Dart
47 lines
1.7 KiB
Dart
// Copyright 2014 The Flutter 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/material.dart';
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import 'package:flutter_api_samples/material/app_bar/sliver_app_bar.4.dart'
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as example;
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import 'package:flutter_test/flutter_test.dart';
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const Offset _kOffset = Offset(0.0, 200.0);
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void main() {
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testWidgets('SliverAppbar can be stretched', (WidgetTester tester) async {
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await tester.pumpWidget(
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const example.StretchableSliverAppBar(),
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);
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final Finder switchFinder = find.byType(Switch);
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Switch materialSwitch = tester.widget<Switch>(switchFinder);
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expect(materialSwitch.value, true);
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expect(find.widgetWithText(SliverAppBar, 'SliverAppBar'), findsOneWidget);
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expect(tester.getBottomLeft(find.text('SliverAppBar')).dy, 184.0);
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await tester.drag(find.text('0'), _kOffset,
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touchSlopY: 0, warnIfMissed: false);
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 500));
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expect(find.widgetWithText(SliverAppBar, 'SliverAppBar'), findsOneWidget);
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expect(
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tester.getBottomLeft(find.text('SliverAppBar')).dy, 187.63506380825314);
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await tester.tap(switchFinder);
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await tester.pumpAndSettle();
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materialSwitch = tester.widget<Switch>(switchFinder);
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expect(materialSwitch.value, false);
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await tester.drag(find.text('0'), _kOffset,
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touchSlopY: 0, warnIfMissed: false);
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 500));
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expect(find.text('SliverAppBar'), findsOneWidget);
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expect(tester.getBottomLeft(find.text('SliverAppBar')).dy, 184.0);
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});
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}
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