import 'package:flutter/services.dart'; import 'package:flutter_test/flutter_test.dart'; import 'package:vnote_device_plugin/vnote_device_plugin_method_channel.dart'; void main() { TestWidgetsFlutterBinding.ensureInitialized(); MethodChannelVnoteDevicePlugin platform = MethodChannelVnoteDevicePlugin(); const MethodChannel channel = MethodChannel('vnote_device_plugin'); setUp(() { TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger.setMockMethodCallHandler( channel, (MethodCall methodCall) async { return '42'; }, ); }); tearDown(() { TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger.setMockMethodCallHandler(channel, null); }); test('getPlatformVersion', () async { expect(await platform.getPlatformVersion(), '42'); }); }