anchor.diff:  import 'package:fixnum/fixnum.dart';
  -import 'package:flutter/widgets.dart' show WidgetsFlutterBinding;
   import 'package:flutter/services.dart';
  -import 'package:test/test.dart';
  +import 'package:flutter_test/flutter_test.dart';
   
   import 'package:phone_log/phone_log.dart';
   
   typedef Future<dynamic> Handler(MethodCall call);
   
   void main() {
  -  WidgetsFlutterBinding.ensureInitialized();
  -
     String invokedMethod;
     dynamic arguments;
     Handler mockChannel;
  
positive.code:           <String, String>{'startDate': '123456789', 'duration': '12'});
      });
  
      test('check permission', () async {
        channel.setMockMethodCallHandler(mockChannel);
  
        await phoneLog.checkPermission();
  
negative.code:       expect(permissionCannotRequest, PermissionStatus.deniedAndCannotRequest);
      });
  
      testWidgets('request permission', (WidgetTester tester) async {
        channel.setMockMethodCallHandler(mockChannel);
  
        await phoneLog.requestPermission();
  