| 1 | // Copyright 2014 The Flutter Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
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| 3 | // found in the LICENSE file. |
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| 4 | |
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| 5 | @TestOn('chrome' ) // Uses web-only Flutter SDK |
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| 6 | library; |
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| 7 | |
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| 8 | import 'dart:ui_web' as ui_web; |
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| 9 | |
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| 10 | import 'package:flutter/services.dart' ; |
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| 11 | import 'package:flutter_test/flutter_test.dart' ; |
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| 12 | import 'package:flutter_web_plugins/flutter_web_plugins.dart' ; |
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| 13 | |
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| 14 | class TestPlugin { |
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| 15 | static void registerWith(Registrar registrar) { |
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| 16 | final MethodChannel channel = MethodChannel( |
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| 17 | 'test_plugin' , |
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| 18 | const StandardMethodCodec(), |
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| 19 | registrar.messenger, |
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| 20 | ); |
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| 21 | final TestPlugin testPlugin = TestPlugin(); |
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| 22 | channel.setMethodCallHandler(testPlugin.handleMethodCall); |
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| 23 | } |
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| 24 | |
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| 25 | static final List<String> calledMethods = <String>[]; |
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| 26 | |
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| 27 | Future<void> handleMethodCall(MethodCall call) async { |
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| 28 | calledMethods.add(call.method); |
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| 29 | } |
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| 30 | } |
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| 31 | |
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| 32 | void main() { |
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| 33 | // Disabling tester emulation because this test relies on real message channel communication. |
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| 34 | ui_web.debugEmulateFlutterTesterEnvironment = false; |
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| 35 | |
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| 36 | group('Plugin Registry' , () { |
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| 37 | setUp(() { |
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| 38 | TestWidgetsFlutterBinding.ensureInitialized(); |
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| 39 | webPluginRegistry.registerMessageHandler(); |
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| 40 | final Registrar registrar = webPluginRegistry.registrarFor(TestPlugin); |
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| 41 | TestPlugin.registerWith(registrar); |
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| 42 | }); |
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| 43 | |
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| 44 | test('can register a plugin' , () { |
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| 45 | TestPlugin.calledMethods.clear(); |
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| 46 | |
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| 47 | const MethodChannel frameworkChannel = |
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| 48 | MethodChannel('test_plugin' ); |
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| 49 | frameworkChannel.invokeMethod<void>('test1' ); |
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| 50 | |
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| 51 | expect(TestPlugin.calledMethods, equals(<String>['test1' ])); |
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| 52 | }); |
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| 53 | |
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| 54 | test('can send a message from the plugin to the framework' , () async { |
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| 55 | const StandardMessageCodec codec = StandardMessageCodec(); |
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| 56 | |
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| 57 | final List<String> loggedMessages = <String>[]; |
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| 58 | ServicesBinding.instance.defaultBinaryMessenger |
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| 59 | .setMessageHandler('test_send' , (ByteData? data) { |
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| 60 | loggedMessages.add(codec.decodeMessage(data)! as String); |
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| 61 | return Future<ByteData?>.value(); |
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| 62 | }); |
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| 63 | |
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| 64 | await pluginBinaryMessenger.send( |
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| 65 | 'test_send' , codec.encodeMessage('hello' )); |
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| 66 | expect(loggedMessages, equals(<String>['hello' ])); |
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| 67 | |
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| 68 | await pluginBinaryMessenger.send( |
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| 69 | 'test_send' , codec.encodeMessage('world' )); |
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| 70 | expect(loggedMessages, equals(<String>['hello' , 'world' ])); |
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| 71 | |
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| 72 | ServicesBinding.instance.defaultBinaryMessenger |
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| 73 | .setMessageHandler('test_send' , null); |
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| 74 | }); |
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| 75 | }); |
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| 76 | } |
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| 77 | |
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