67 lines
1.9 KiB
Dart
67 lines
1.9 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/services.dart';
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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final TestWidgetsFlutterBinding binding = TestWidgetsFlutterBinding.ensureInitialized();
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group('Undo Interactions', () {
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test('UndoManagerClient handleUndo', () async {
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// Assemble an UndoManagerClient so we can verify its change in state.
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final client = _FakeUndoManagerClient();
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UndoManager.client = client;
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expect(client.latestMethodCall, isEmpty);
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// Send handleUndo message with "undo" as the direction.
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ByteData? messageBytes = const JSONMessageCodec().encodeMessage(<String, dynamic>{
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'args': <dynamic>['undo'],
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'method': 'UndoManagerClient.handleUndo',
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});
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await binding.defaultBinaryMessenger.handlePlatformMessage(
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'flutter/undomanager',
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messageBytes,
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null,
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);
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expect(client.latestMethodCall, 'handlePlatformUndo(${UndoDirection.undo})');
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// Send handleUndo message with "undo" as the direction.
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messageBytes = const JSONMessageCodec().encodeMessage(<String, dynamic>{
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'args': <dynamic>['redo'],
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'method': 'UndoManagerClient.handleUndo',
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});
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await binding.defaultBinaryMessenger.handlePlatformMessage(
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'flutter/undomanager',
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messageBytes,
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(ByteData? _) {},
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);
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expect(client.latestMethodCall, 'handlePlatformUndo(${UndoDirection.redo})');
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});
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});
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}
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class _FakeUndoManagerClient with UndoManagerClient {
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String latestMethodCall = '';
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@override
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void undo() {}
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@override
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void redo() {}
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@override
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bool get canUndo => false;
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@override
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bool get canRedo => false;
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@override
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void handlePlatformUndo(UndoDirection direction) {
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latestMethodCall = 'handlePlatformUndo($direction)';
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}
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}
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