WidgetModel Tests fail on Flutter 3.10 - NoSuchMethodError: has no instance setter '_wmHandler='

[Sadhorsephile]

Steps to reproduce

1. Create basic ElementaryModel - WidgetModel - ElementaryWidget.
2. Create test for WidgetModel.
3. Invoke tester.init() in testFunction inside testWidgetModel.

Expected result

Tests will not fail.

Actual result

Tests will fail with error:

NoSuchMethodError: Class 'ExampleModelMock' has no instance setter '_wmHandler='.

Receiver: Instance of 'ExampleModelMock'

Tried calling: _wmHandler=Closure: (Object) => void from Function 'onErrorHandle':.

Screenshot

Code example

```dart import 'package:elementary/elementary.dart'; import 'package:elementary_test/elementary_test.dart'; import 'package:flutter/material.dart'; import 'package:mocktail/mocktail.dart'; class ExampleModel extends ElementaryModel {} class ExampleWidget extends ElementaryWidget { const ExampleWidget({ Key? key, WidgetModelFactory wmFactory = defaultExampleWidgetModelFactory, }) : super(wmFactory, key: key); @override Widget build(IExampleWidgetModel wm) { return Container(); } } abstract class IExampleWidgetModel extends IWidgetModel {} ExampleWidgetModel defaultExampleWidgetModelFactory(BuildContext context) { return ExampleWidgetModel(ExampleModel()); } class ExampleWidgetModel extends WidgetModel implements IExampleWidgetModel { ExampleWidgetModel(ExampleModel model) : super(model); } /// Тесты для [ExampleWidgetModel] void main() { late ExampleModelMock model; ExampleWidgetModel setUpWm() { model = ExampleModelMock(); return ExampleWidgetModel(model); } testWidgetModel( 'myfirsttestcase', setUpWm, (wm, tester, context) { tester.init(); }, ); testWidgetModel( 'mysecondtestcase', setUpWm, (wm, tester, context) { tester.init(); }, ); } class ExampleModelMock extends Mock implements ExampleModel {} ```

[MbIXjkee]

Hi. Try to use MockElementaryModelMixin for testing, this behavior is related to changes in the 2.19 Dart. More details here