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9c10151508
The change in [0] has propagated now everywhere, so we can use `utf8.encode()` instead of the longer `const Utf8Encoder.convert()`. Also it cleans up code like ``` TypedData bytes; bytes.buffer.asByteData(); ``` as that is not guaranteed to be correct, the correct version would be ``` TypedData bytes; bytes.buffer.asByteData(bytes.offsetInBytes, bytes.lengthInBytes); ``` a shorter hand for that is: ``` TypedData bytes; ByteData.sublistView(bytes); ``` [0] https://github.com/dart-lang/sdk/issues/52801
61 lines
1.9 KiB
Dart
61 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 'dart:async';
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import 'dart:convert';
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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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TestWidgetsFlutterBinding.ensureInitialized();
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ByteData makeByteData(String str) {
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return ByteData.sublistView(utf8.encode(str));
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}
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test('default binary messenger calls callback once', () async {
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int countInbound = 0;
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int countOutbound = 0;
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const String channel = 'foo';
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final ByteData bar = makeByteData('bar');
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final Completer<void> done = Completer<void>();
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ServicesBinding.instance.channelBuffers.push(
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channel,
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bar,
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(ByteData? message) async {
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expect(message, isNull);
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countOutbound += 1;
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done.complete();
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},
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);
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expect(countInbound, equals(0));
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expect(countOutbound, equals(0));
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ServicesBinding.instance.defaultBinaryMessenger.setMessageHandler(
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channel,
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(ByteData? message) async {
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expect(message, bar);
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countInbound += 1;
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return null;
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},
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);
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expect(countInbound, equals(0));
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expect(countOutbound, equals(0));
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await done.future;
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expect(countInbound, equals(1));
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expect(countOutbound, equals(1));
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});
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test('can check the mock handler', () {
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Future<ByteData?> handler(ByteData? call) => Future<ByteData?>.value();
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final TestDefaultBinaryMessenger messenger = TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger;
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expect(messenger.checkMockMessageHandler('test_channel', null), true);
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expect(messenger.checkMockMessageHandler('test_channel', handler), false);
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messenger.setMockMessageHandler('test_channel', handler);
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expect(messenger.checkMockMessageHandler('test_channel', handler), true);
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messenger.setMockMessageHandler('test_channel', null);
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});
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}
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