FlutterSmartScanPlugin/test/flutter_smartscan_plugin_test.dart

import 'package:flutter_test/flutter_test.dart';
import 'package:flutter_smartscan_plugin/flutter_smartscan_plugin.dart';
import 'package:flutter_smartscan_plugin/flutter_smartscan_plugin_platform_interface.dart';
import 'package:flutter_smartscan_plugin/plugin_method_channel_native.dart';
import 'package:plugin_platform_interface/plugin_platform_interface.dart';

class MockFlutterSmartscanPluginPlatform
    with MockPlatformInterfaceMixin
    implements FlutterSmartscanPluginPlatform {
  @override
  Future<String?> getPlatformVersion() => Future.value('42');
}

void main() {
  final FlutterSmartscanPluginPlatform initialPlatform =
      FlutterSmartscanPluginPlatform.instance;

  test('$MethodChannelFlutterSmartscanPlugin is the default instance', () {
    expect(
        initialPlatform, isInstanceOf<MethodChannelFlutterSmartscanPlugin>());
  });

  test('getPlatformVersion', () async {
    FlutterSmartscanPlugin flutterSmartscanPlugin = FlutterSmartscanPlugin();
    MockFlutterSmartscanPluginPlatform fakePlatform =
        MockFlutterSmartscanPluginPlatform();
    FlutterSmartscanPluginPlatform.instance = fakePlatform;

    expect(await flutterSmartscanPlugin.getPlatformVersion(), '42');
  });
}