64 lines
1.7 KiB
Dart
64 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_test/flutter_test.dart';
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void main() {
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test('Can dispose ScrollPosition when hasPixels is false', () {
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final ScrollPosition position = ScrollPositionWithSingleContext(
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initialPixels: null,
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keepScrollOffset: false,
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physics: const AlwaysScrollableScrollPhysics(),
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context: ScrollableState(),
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);
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expect(position.hasPixels, false);
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position.dispose(); // Should not throw/assert.
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});
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testWidgets('scrollable in hidden overlay does not crash when unhidden', (WidgetTester tester) async {
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// Regression test for https://github.com/flutter/flutter/issues/44269.
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final TabController controller = TabController(vsync: const TestVSync(), length: 1);
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final OverlayEntry entry1 = OverlayEntry(
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maintainState: true,
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opaque: true,
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builder: (BuildContext context) {
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return TabBar(
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isScrollable: true,
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controller: controller,
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tabs: const <Tab>[
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Tab(text: 'Main'),
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],
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);
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},
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);
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final OverlayEntry entry2 = OverlayEntry(
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maintainState: true,
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opaque: true,
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builder: (BuildContext context) {
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return const Text('number2');
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},
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);
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await tester.pumpWidget(
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MaterialApp(
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home: Material(
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child: Overlay(
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initialEntries: <OverlayEntry>[
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entry1,
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entry2,
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],
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),
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),
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),
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);
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entry2.remove();
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await tester.pump();
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expect(tester.takeException(), isNull);
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});
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}
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