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// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
@TestOn('chrome') // Uses web-only Flutter SDK
library;
import 'dart:ui_web' as ui_web;
import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:flutter_web_plugins/flutter_web_plugins.dart';
class TestPlugin {
static void registerWith(Registrar registrar) {
final MethodChannel channel = MethodChannel(
'test_plugin',
const StandardMethodCodec(),
registrar.messenger,
);
final TestPlugin testPlugin = TestPlugin();
channel.setMethodCallHandler(testPlugin.handleMethodCall);
}
static final List<String> calledMethods = <String>[];
Future<void> handleMethodCall(MethodCall call) async {
calledMethods.add(call.method);
}
}
void main() {
// Disabling tester emulation because this test relies on real message channel communication.
ui_web.debugEmulateFlutterTesterEnvironment = false;
group('Plugin Registry', () {
setUp(() {
TestWidgetsFlutterBinding.ensureInitialized();
webPluginRegistry.registerMessageHandler();
final Registrar registrar = webPluginRegistry.registrarFor(TestPlugin);
TestPlugin.registerWith(registrar);
});
test('can register a plugin', () {
TestPlugin.calledMethods.clear();
const MethodChannel frameworkChannel =
MethodChannel('test_plugin');
frameworkChannel.invokeMethod<void>('test1');
expect(TestPlugin.calledMethods, equals(<String>['test1']));
});
test('can send a message from the plugin to the framework', () async {
const StandardMessageCodec codec = StandardMessageCodec();
final List<String> loggedMessages = <String>[];
ServicesBinding.instance.defaultBinaryMessenger
.setMessageHandler('test_send', (ByteData? data) {
loggedMessages.add(codec.decodeMessage(data)! as String);
return Future<ByteData?>.value();
});
await pluginBinaryMessenger.send(
'test_send', codec.encodeMessage('hello'));
expect(loggedMessages, equals(<String>['hello']));
await pluginBinaryMessenger.send(
'test_send', codec.encodeMessage('world'));
expect(loggedMessages, equals(<String>['hello', 'world']));
ServicesBinding.instance.defaultBinaryMessenger
.setMessageHandler('test_send', null);
});
});
}