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788a0e3d2f
Hopefully soon, [flutter.dev/go/dart-patterns](https://flutter.dev/go/dart-patterns) will have lots of good feedback; in the meantime, I'll focus refactoring efforts on uncontroversial things :) Previously, I was under the impression that I could solve issue #143803 with [just 1 PR](https://github.com/flutter/flutter/pull/143804). It turns out that I had overlooked quite a bit! <br> ```dart // before if (chunkEvents != null) { chunkEvents.listen((ImageChunkEvent event) { reportImageChunkEvent(event); }, ); } // after chunkEvents?.listen(reportImageChunkEvent); ```
56 lines
1.5 KiB
Dart
56 lines
1.5 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 'dart:ui' as ui;
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import 'package:flutter/foundation.dart';
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import 'package:flutter/gestures.dart';
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import 'package:flutter_test/flutter_test.dart';
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typedef HandleEventCallback = void Function(PointerEvent event);
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class TestGestureFlutterBinding extends BindingBase with GestureBinding {
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HandleEventCallback? callback;
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@override
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void handleEvent(PointerEvent event, HitTestEntry entry) {
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callback?.call(event);
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super.handleEvent(event, entry);
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}
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static const ui.PointerDataPacket packet = ui.PointerDataPacket(
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data: <ui.PointerData>[
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ui.PointerData(change: ui.PointerChange.down),
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ui.PointerData(change: ui.PointerChange.up),
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],
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);
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Future<void> test(VoidCallback callback) {
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return _binding.lockEvents(() async {
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GestureBinding.instance.platformDispatcher.onPointerDataPacket?.call(packet);
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callback();
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});
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}
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}
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late TestGestureFlutterBinding _binding;
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void main() {
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_binding = TestGestureFlutterBinding();
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test('Pointer events are locked during reassemble', () async {
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final List<PointerEvent> events = <PointerEvent>[];
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_binding.callback = events.add;
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bool tested = false;
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await _binding.test(() {
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expect(events.length, 0);
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tested = true;
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});
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expect(tested, isTrue);
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expect(events.length, 2);
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expect(events[0], isA<PointerDownEvent>());
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expect(events[1], isA<PointerUpEvent>());
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});
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}
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