Creating a Mock stops debugger from working in flutter application #285
Comments
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That's a bizarre bug. Can you show me the exact code that creates this bug? Can you show me the output of flutter doctor? |
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Here's a sample I put together. All I have to do in the test file at the bottom is remove the here's import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
void main() {
runApp(
MyApp(),
);
}
abstract class HomeRouteFactory {
Route call();
}
class MyApp extends StatelessWidget {
final HomeRouteFactory myAppHomePageRouteFactory;
const MyApp({
Key key,
this.myAppHomePageRouteFactory,
}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
onGenerateRoute: (settings) {
return MaterialPageRoute(
builder: (context) {
return NotesListPage(
notesValueListenable: ValueNotifier<List<NoteListModel>>([]),
);
},
);
},
);
}
}
abstract class NoteListModel {
String get title;
String get id;
}
class NotesListPage extends StatelessWidget {
final ValueListenable<List<NoteListModel>> notesValueListenable;
const NotesListPage({
this.notesValueListenable,
});
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Notes'),
),
body: ValueListenableBuilder<List<NoteListModel>>(
valueListenable:
notesValueListenable ?? ValueNotifier<List<NoteListModel>>([]),
builder: (context, notes, child) {
return Visibility(
visible: notes != null,
replacement: Center(child: CircularProgressIndicator()),
child: ListView.separated(
itemBuilder: (context, index) {
return ListTile(
title: Text(notes[index]?.title ?? ''),
);
},
separatorBuilder: (context, index) => Divider(),
itemCount: notesValueListenable?.value?.length ?? 0,
),
);
},
),
);
}
}and import 'package:flutter/material.dart';
import 'package:flutter_notes/main.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:mockito/mockito.dart';
class StubNoteListModel implements NoteListModel {
final String title;
final String id;
StubNoteListModel({this.title, this.id});
}
class MockNoteListModel extends Mock implements NoteListModel {}
void main() {
group('Note List Page', () {
testWidgets('it shows list of notes', (WidgetTester tester) async {
// GIVEN
final note1 = StubNoteListModel();
final note2 = StubNoteListModel();
final notesValuesNotifier = ValueNotifier<List<NoteListModel>>([
note1,
note2,
]);
// WHEN
await tester.pumpWidget(
MaterialApp(
home: NotesListPage(
notesValueListenable: notesValuesNotifier,
),
),
);
// THEN
expect(find.byType(ListTile), findsNWidgets(2));
});
});
}
name: flutter_notes
description: A new Flutter project.
# The following line prevents the package from being accidentally published to
# pub.dev using `pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1
environment:
sdk: ">=2.7.0 <3.0.0"
dependencies:
flutter:
sdk: flutter
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^0.1.3
dev_dependencies:
flutter_test:
sdk: flutter
mockito: ^4.0.0
integration_test: ^0.9.1
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
# assets:
# - images/a_dot_burr.jpeg
# - images/a_dot_ham.jpeg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware.
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages |
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Here's another quick piece of crazy info, if I change the mock to: class MockNoteListModel extends Mock implements ValueNotifier {}any internal class to dart/flutter sdk and it starts working again. |
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also here is flutter doctor, almost forgot: |
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In a simple app, if you import mockito into a flutter application test and then create any mock class (don't even have to use it) using
extends Mockthe debugger will no longer stop at any breakpoints in non-test code. This has caused us a number of headaches. If there is anything I can do to help, please let me know.The text was updated successfully, but these errors were encountered: