ML-126 Automate screenshots creation (#127)

* Create screenshot_driver.dart

* wip

* deleted screenshots

* iap mock

* generate for 3 colors

* cleanup

* generate single dark screenshots

* snake_case

* added stub image for camera

* scroll to the first checkbox selected

* unstub iap

* cleanup

* Update generate_screenshots.dart

* typo

.gitignore

@@ -60,3 +60,4 @@ ios/Runner/GoogleService-Info.plist
 /lib/firebase_options.dart
 
 coverage/
+screenshots/

iap/lib/src/data/models/iap_product.dart

@@ -6,8 +6,26 @@ enum IAPProductStatus {
 
 enum IAPProductType { paidFeatures }
 
-abstract class IAPProduct {
+class IAPProduct {
-  const IAPProduct._();
+  final String storeId;
+  final IAPProductStatus status;
 
-  IAPProductStatus get status => IAPProductStatus.purchasable;
+  const IAPProduct({
+    required this.storeId,
+    this.status = IAPProductStatus.purchasable,
+  });
+
+  IAPProduct copyWith({IAPProductStatus? status}) => IAPProduct(
+        storeId: storeId,
+        status: status ?? this.status,
+      );
+}
+
+extension IAPProductTypeExtension on IAPProductType {
+  String get storeId {
+    switch (this) {
+      case IAPProductType.paidFeatures:
+        return "";
+    }
+  }
 }

iap/lib/src/providers/iap_products_provider.dart

@@ -18,7 +18,12 @@ class IAPProductsProviderState extends State<IAPProductsProvider> {
   @override
   Widget build(BuildContext context) {
     return IAPProducts(
-      products: const [],
+      products: [
+        IAPProduct(
+          storeId: IAPProductType.paidFeatures.storeId,
+          status: IAPProductStatus.purchased,
+        )
+      ],
       child: widget.child,
     );
   }
@@ -35,13 +40,28 @@ class IAPProducts extends InheritedModel<IAPProductType> {
     super.key,
   });
 
-  static IAPProduct? productOf(BuildContext context, IAPProductType type) => null;
+  static IAPProduct? productOf(BuildContext context, IAPProductType type) {
+    final IAPProducts? result = InheritedModel.inheritFrom<IAPProducts>(context, aspect: type);
+    return result!._findProduct(type);
+  }
 
-  static bool isPurchased(BuildContext context, IAPProductType type) => false;
+  static bool isPurchased(BuildContext context, IAPProductType type) {
+    final IAPProducts? result = InheritedModel.inheritFrom<IAPProducts>(context, aspect: type);
+    return result!._findProduct(type)?.status == IAPProductStatus.purchased;
+  }
 
   @override
   bool updateShouldNotify(IAPProducts oldWidget) => false;
 
   @override
-  bool updateShouldNotifyDependent(covariant IAPProducts oldWidget, Set<IAPProductType> dependencies) => false;
+  bool updateShouldNotifyDependent(IAPProducts oldWidget, Set<IAPProductType> dependencies) =>
+      false;
+
+  IAPProduct? _findProduct(IAPProductType type) {
+    try {
+      return products.firstWhere((element) => element.storeId == type.storeId);
+    } catch (_) {
+      return null;
+    }
+  }
 }

integration_test/generate_screenshots.dart

@@ -0,0 +1,294 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+import 'package:lightmeter/application.dart';
+import 'package:lightmeter/data/caffeine_service.dart';
+import 'package:lightmeter/data/haptics_service.dart';
+import 'package:lightmeter/data/light_sensor_service.dart';
+import 'package:lightmeter/data/models/ev_source_type.dart';
+import 'package:lightmeter/data/models/metering_screen_layout_config.dart';
+import 'package:lightmeter/data/models/supported_locale.dart';
+import 'package:lightmeter/data/models/theme_type.dart';
+import 'package:lightmeter/data/models/volume_action.dart';
+import 'package:lightmeter/data/permissions_service.dart';
+import 'package:lightmeter/data/shared_prefs_service.dart';
+import 'package:lightmeter/data/volume_events_service.dart';
+import 'package:lightmeter/environment.dart';
+import 'package:lightmeter/generated/l10n.dart';
+import 'package:lightmeter/providers/services_provider.dart';
+import 'package:lightmeter/providers/user_preferences_provider.dart';
+import 'package:lightmeter/res/dimens.dart';
+import 'package:lightmeter/res/theme.dart';
+import 'package:lightmeter/screens/metering/components/bottom_controls/components/measure_button/widget_button_measure.dart';
+import 'package:lightmeter/screens/metering/components/shared/readings_container/components/iso_picker/widget_picker_iso.dart';
+import 'package:lightmeter/screens/metering/components/shared/readings_container/components/shared/animated_dialog_picker/components/dialog_picker/widget_picker_dialog.dart';
+import 'package:lightmeter/screens/settings/components/metering/components/equipment_profiles/components/equipment_profile_screen/components/equipment_profile_container/widget_container_equipment_profile.dart';
+import 'package:lightmeter/screens/settings/components/metering/components/equipment_profiles/components/equipment_profile_screen/screen_equipment_profile.dart';
+import 'package:lightmeter/screens/settings/screen_settings.dart';
+import 'package:m3_lightmeter_iap/m3_lightmeter_iap.dart';
+import 'package:m3_lightmeter_resources/m3_lightmeter_resources.dart';
+import 'package:mocktail/mocktail.dart';
+import 'package:permission_handler/permission_handler.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class _MockSharedPreferences extends Mock implements SharedPreferences {}
+
+class _MockUserPreferencesService extends Mock implements UserPreferencesService {}
+
+class _MockCaffeineService extends Mock implements CaffeineService {}
+
+class _MockHapticsService extends Mock implements HapticsService {}
+
+class _MockPermissionsService extends Mock implements PermissionsService {}
+
+class _MockLightSensorService extends Mock implements LightSensorService {}
+
+class _MockVolumeEventsService extends Mock implements VolumeEventsService {}
+
+//https://stackoverflow.com/a/67186625/13167574
+void main() {
+  late _MockUserPreferencesService mockUserPreferencesService;
+  late _MockCaffeineService mockCaffeineService;
+  late _MockHapticsService mockHapticsService;
+  late _MockPermissionsService mockPermissionsService;
+  late _MockLightSensorService mockLightSensorService;
+  late _MockVolumeEventsService mockVolumeEventsService;
+
+  final binding = IntegrationTestWidgetsFlutterBinding();
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+
+  setUpAll(() {
+    mockUserPreferencesService = _MockUserPreferencesService();
+    when(() => mockUserPreferencesService.evSourceType).thenReturn(EvSourceType.camera);
+    when(() => mockUserPreferencesService.stopType).thenReturn(StopType.third);
+    when(() => mockUserPreferencesService.locale).thenReturn(SupportedLocale.en);
+    when(() => mockUserPreferencesService.caffeine).thenReturn(true);
+    when(() => mockUserPreferencesService.volumeAction).thenReturn(VolumeAction.shutter);
+    when(() => mockUserPreferencesService.cameraEvCalibration).thenReturn(0.0);
+    when(() => mockUserPreferencesService.lightSensorEvCalibration).thenReturn(0.0);
+    when(() => mockUserPreferencesService.iso).thenReturn(const IsoValue(400, StopType.full));
+    when(() => mockUserPreferencesService.ndFilter).thenReturn(NdValue.values.first);
+    when(() => mockUserPreferencesService.haptics).thenReturn(true);
+    when(() => mockUserPreferencesService.meteringScreenLayout).thenReturn({
+      MeteringScreenLayoutFeature.equipmentProfiles: true,
+      MeteringScreenLayoutFeature.extremeExposurePairs: true,
+      MeteringScreenLayoutFeature.filmPicker: true,
+      MeteringScreenLayoutFeature.histogram: false,
+    });
+    when(() => mockUserPreferencesService.themeType).thenReturn(ThemeType.light);
+    when(() => mockUserPreferencesService.dynamicColor).thenReturn(false);
+
+    mockCaffeineService = _MockCaffeineService();
+    when(() => mockCaffeineService.isKeepScreenOn()).thenAnswer((_) async => false);
+    when(() => mockCaffeineService.keepScreenOn(true)).thenAnswer((_) async => true);
+    when(() => mockCaffeineService.keepScreenOn(false)).thenAnswer((_) async => false);
+
+    mockHapticsService = _MockHapticsService();
+    when(() => mockHapticsService.quickVibration()).thenAnswer((_) async {});
+    when(() => mockHapticsService.responseVibration()).thenAnswer((_) async {});
+    when(() => mockHapticsService.errorVibration()).thenAnswer((_) async {});
+
+    mockPermissionsService = _MockPermissionsService();
+    when(() => mockPermissionsService.requestCameraPermission())
+        .thenAnswer((_) async => PermissionStatus.granted);
+    when(() => mockPermissionsService.checkCameraPermission())
+        .thenAnswer((_) async => PermissionStatus.granted);
+
+    mockLightSensorService = _MockLightSensorService();
+    when(() => mockLightSensorService.hasSensor()).thenAnswer((_) async => true);
+    when(() => mockLightSensorService.luxStream()).thenAnswer((_) => Stream.fromIterable([100]));
+
+    mockVolumeEventsService = _MockVolumeEventsService();
+    when(() => mockVolumeEventsService.setVolumeHandling(true)).thenAnswer((_) async => true);
+    when(() => mockVolumeEventsService.setVolumeHandling(false)).thenAnswer((_) async => false);
+    when(() => mockVolumeEventsService.volumeButtonsEventStream())
+        .thenAnswer((_) => const Stream<int>.empty());
+
+    when(() => mockHapticsService.quickVibration()).thenAnswer((_) async {});
+    when(() => mockHapticsService.responseVibration()).thenAnswer((_) async {});
+  });
+
+  Future<void> pumpApplication(WidgetTester tester) async {
+    await tester.pumpWidget(
+      IAPProviders(
+        sharedPreferences: _MockSharedPreferences(),
+        child: EquipmentProfiles(
+          selected: _mockEquipmentProfiles[1],
+          values: _mockEquipmentProfiles,
+          child: Films(
+            selected: const Film('Ilford HP5+', 400),
+            values: const [Film.other(), Film('Ilford HP5+', 400)],
+            filmsInUse: const [Film.other(), Film('Ilford HP5+', 400)],
+            child: ServicesProvider(
+              environment: const Environment.prod().copyWith(hasLightSensor: true),
+              userPreferencesService: mockUserPreferencesService,
+              caffeineService: mockCaffeineService,
+              hapticsService: mockHapticsService,
+              permissionsService: mockPermissionsService,
+              lightSensorService: mockLightSensorService,
+              volumeEventsService: mockVolumeEventsService,
+              child: const UserPreferencesProvider(
+                child: Application(),
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+  }
+
+  /// Generates several screenshots with the light theme
+  /// and the additionally the first one with the dark theme
+  void generateScreenshots(Color color) {
+    testWidgets('${color.value}_light', (tester) async {
+      when(() => mockUserPreferencesService.themeType).thenReturn(ThemeType.light);
+      when(() => mockUserPreferencesService.primaryColor).thenReturn(color);
+      await pumpApplication(tester);
+
+      await tester.takePhoto();
+      await tester.takeScreenshot(binding, '${color.value}_metering_reflected');
+
+      await tester.tap(find.byTooltip(S.current.tooltipUseLightSensor));
+      await tester.pumpAndSettle();
+      await tester.tap(find.byType(MeteringMeasureButton));
+      await tester.tap(find.byType(MeteringMeasureButton));
+      await tester.takeScreenshot(binding, '${color.value}_metering_incident');
+
+      expect(find.byType(IsoValuePicker), findsOneWidget);
+      await tester.tap(find.byType(IsoValuePicker));
+      await tester.pumpAndSettle(Dimens.durationL);
+      expect(find.byType(DialogPicker<IsoValue>), findsOneWidget);
+      await tester.takeScreenshot(binding, '${color.value}_metering_iso_picker');
+
+      await tester.tapCancelButton();
+      expect(find.byType(DialogPicker<IsoValue>), findsNothing);
+      expect(find.byTooltip(S.current.tooltipOpenSettings), findsOneWidget);
+      await tester.tap(find.byTooltip(S.current.tooltipOpenSettings));
+      await tester.pumpAndSettle();
+      expect(find.byType(SettingsScreen), findsOneWidget);
+      await tester.takeScreenshot(binding, '${color.value}_settings');
+
+      await tester.tapListTile(S.current.meteringScreenLayout);
+      await tester.takeScreenshot(binding, '${color.value}_settings_metering_screen_layout');
+
+      await tester.tapCancelButton();
+      await tester.tapListTile(S.current.equipmentProfiles);
+      expect(find.byType(EquipmentProfilesScreen), findsOneWidget);
+      await tester.tap(find.byType(EquipmentProfileContainer).first);
+      await tester.pumpAndSettle();
+      await tester.takeScreenshot(binding, '${color.value}-equipment_profiles');
+
+      await tester.tap(find.byIcon(Icons.iso).first);
+      await tester.pumpAndSettle();
+      await tester.takeScreenshot(binding, '${color.value}_equipment_profiles_iso_picker');
+    });
+
+    testWidgets(
+      '${color.value}_dark',
+      (tester) async {
+        when(() => mockUserPreferencesService.themeType).thenReturn(ThemeType.dark);
+        when(() => mockUserPreferencesService.primaryColor).thenReturn(color);
+        await pumpApplication(tester);
+
+        await tester.takePhoto();
+        await tester.takeScreenshot(binding, '${color.value}_metering_reflected_dark');
+
+        await tester.tap(find.byTooltip(S.current.tooltipUseLightSensor));
+        await tester.pumpAndSettle();
+        await tester.tap(find.byType(MeteringMeasureButton));
+        await tester.tap(find.byType(MeteringMeasureButton));
+        await tester.takeScreenshot(binding, '${color.value}_metering_incident_dark');
+      },
+    );
+  }
+
+  generateScreenshots(primaryColorsList[5]);
+  generateScreenshots(primaryColorsList[3]);
+  generateScreenshots(primaryColorsList[9]);
+}
+
+extension on WidgetTester {
+  Future<void> takeScreenshot(IntegrationTestWidgetsFlutterBinding binding, String name) async {
+    if (Platform.isAndroid) {
+      await binding.convertFlutterSurfaceToImage();
+      await pumpAndSettle();
+    }
+    await binding.takeScreenshot(name);
+    await pumpAndSettle();
+  }
+
+  Future<void> takePhoto() async {
+    await tap(find.byType(MeteringMeasureButton));
+    await pump(const Duration(seconds: 2)); // wait for circular progress indicator
+    await pump(const Duration(seconds: 1)); // wait for circular progress indicator
+    await pumpAndSettle();
+  }
+
+  Future<void> tapCancelButton() async {
+    final cancelButton = find.byWidgetPredicate(
+      (widget) =>
+          widget is TextButton &&
+          widget.child is Text &&
+          (widget.child as Text?)?.data == S.current.cancel,
+    );
+    expect(cancelButton, findsOneWidget);
+    await tap(cancelButton);
+    await pumpAndSettle();
+  }
+
+  Future<void> tapListTile(String title) async {
+    final listTile = find.byWidgetPredicate(
+      (widget) =>
+          widget is ListTile && widget.title is Text && (widget.title as Text?)?.data == title,
+    );
+    expect(listTile, findsOneWidget);
+    await tap(listTile);
+    await pumpAndSettle();
+  }
+}
+
+final _mockEquipmentProfiles = [
+  const EquipmentProfile(
+    id: '',
+    name: '',
+    apertureValues: ApertureValue.values,
+    ndValues: NdValue.values,
+    shutterSpeedValues: ShutterSpeedValue.values,
+    isoValues: IsoValue.values,
+  ),
+  EquipmentProfile(
+    id: '1',
+    name: 'Praktica + Zenitar',
+    apertureValues: ApertureValue.values.sublist(
+      ApertureValue.values.indexOf(const ApertureValue(1.7, StopType.half)),
+      ApertureValue.values.indexOf(const ApertureValue(16, StopType.full)),
+    ),
+    ndValues: NdValue.values.sublist(0, 3),
+    shutterSpeedValues: ShutterSpeedValue.values.sublist(
+      ShutterSpeedValue.values.indexOf(const ShutterSpeedValue(1000, true, StopType.full)),
+      ShutterSpeedValue.values.indexOf(const ShutterSpeedValue(16, false, StopType.full)),
+    ),
+    isoValues: const [
+      IsoValue(50, StopType.full),
+      IsoValue(100, StopType.full),
+      IsoValue(200, StopType.full),
+      IsoValue(250, StopType.third),
+      IsoValue(400, StopType.full),
+      IsoValue(500, StopType.third),
+      IsoValue(800, StopType.full),
+      IsoValue(1600, StopType.full),
+      IsoValue(3200, StopType.full),
+    ],
+  ),
+  const EquipmentProfile(
+    id: '2',
+    name: 'Praktica + Jupiter',
+    apertureValues: ApertureValue.values,
+    ndValues: NdValue.values,
+    shutterSpeedValues: ShutterSpeedValue.values,
+    isoValues: IsoValue.values,
+  ),
+];

integration_test/generate_screenshots.sh

@@ -0,0 +1,10 @@
+flutter drive \
+    --dart-define="cameraPreviewAspectRatio=240/320" \
+    --dart-define="cameraStubImage=assets/camera_stub_image.jpg" \
+    --driver=test_driver/screenshot_driver.dart \
+    --target=integration_test/generate_screenshots.dart \
+    --profile \
+    --flavor=dev \
+    --no-dds \
+    --endless-trace-buffer \
+    --purge-persistent-cache

lib/application.dart

@@ -1,60 +1,24 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
-import 'package:lightmeter/data/caffeine_service.dart';
-import 'package:lightmeter/data/haptics_service.dart';
-import 'package:lightmeter/data/light_sensor_service.dart';
 import 'package:lightmeter/data/models/supported_locale.dart';
-import 'package:lightmeter/data/permissions_service.dart';
-import 'package:lightmeter/data/shared_prefs_service.dart';
-import 'package:lightmeter/data/volume_events_service.dart';
-import 'package:lightmeter/environment.dart';
 import 'package:lightmeter/generated/l10n.dart';
-import 'package:lightmeter/providers/services_provider.dart';
 import 'package:lightmeter/providers/user_preferences_provider.dart';
 import 'package:lightmeter/screens/metering/flow_metering.dart';
 import 'package:lightmeter/screens/settings/flow_settings.dart';
-import 'package:m3_lightmeter_iap/m3_lightmeter_iap.dart';
-import 'package:platform/platform.dart';
-import 'package:shared_preferences/shared_preferences.dart';
 
 class Application extends StatelessWidget {
-  final Environment env;
+  const Application({super.key});
-
-  const Application(this.env, {super.key});
 
   @override
   Widget build(BuildContext context) {
-    return FutureBuilder(
-      future: Future.wait([
-        SharedPreferences.getInstance(),
-        const LightSensorService(LocalPlatform()).hasSensor(),
-      ]),
-      builder: (_, snapshot) {
-        if (snapshot.data != null) {
-          return IAPProviders(
-            sharedPreferences: snapshot.data![0] as SharedPreferences,
-            child: ServicesProvider(
-              caffeineService: const CaffeineService(),
-              environment: env.copyWith(hasLightSensor: snapshot.data![1] as bool),
-              hapticsService: const HapticsService(),
-              lightSensorService: const LightSensorService(LocalPlatform()),
-              permissionsService: const PermissionsService(),
-              userPreferencesService:
-                  UserPreferencesService(snapshot.data![0] as SharedPreferences),
-              volumeEventsService: const VolumeEventsService(LocalPlatform()),
-              child: UserPreferencesProvider(
-                child: Builder(
-                  builder: (context) {
     final theme = UserPreferencesProvider.themeOf(context);
-                    final systemIconsBrightness =
+    final systemIconsBrightness = ThemeData.estimateBrightnessForColor(theme.colorScheme.onSurface);
-                        ThemeData.estimateBrightnessForColor(theme.colorScheme.onSurface);
     return AnnotatedRegion(
       value: SystemUiOverlayStyle(
         statusBarColor: Colors.transparent,
-                        statusBarBrightness: systemIconsBrightness == Brightness.light
+        statusBarBrightness:
-                            ? Brightness.dark
+            systemIconsBrightness == Brightness.light ? Brightness.dark : Brightness.light,
-                            : Brightness.light,
         statusBarIconBrightness: systemIconsBrightness,
         systemNavigationBarColor: Colors.transparent,
         systemNavigationBarIconBrightness: systemIconsBrightness,
@@ -80,18 +44,5 @@ class Application extends StatelessWidget {
         },
       ),
     );
-                  },
-                ),
-              ),
-            ),
-          );
-        } else if (snapshot.error != null) {
-          return Center(child: Text(snapshot.error!.toString()));
-        }
-
-        // TODO(@vodemn): maybe user splashscreen instead
-        return const SizedBox();
-      },
-    );
   }
 }

lib/application_wrapper.dart

@@ -0,0 +1,55 @@
+import 'package:flutter/material.dart';
+import 'package:lightmeter/data/caffeine_service.dart';
+import 'package:lightmeter/data/haptics_service.dart';
+import 'package:lightmeter/data/light_sensor_service.dart';
+import 'package:lightmeter/data/permissions_service.dart';
+import 'package:lightmeter/data/shared_prefs_service.dart';
+import 'package:lightmeter/data/volume_events_service.dart';
+import 'package:lightmeter/environment.dart';
+import 'package:lightmeter/providers/services_provider.dart';
+import 'package:lightmeter/providers/user_preferences_provider.dart';
+import 'package:m3_lightmeter_iap/m3_lightmeter_iap.dart';
+import 'package:platform/platform.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class ApplicationWrapper extends StatelessWidget {
+  final Environment env;
+  final Widget child;
+
+  const ApplicationWrapper(this.env, {required this.child, super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return FutureBuilder(
+      future: Future.wait([
+        SharedPreferences.getInstance(),
+        const LightSensorService(LocalPlatform()).hasSensor(),
+      ]),
+      builder: (_, snapshot) {
+        if (snapshot.data != null) {
+          return IAPProviders(
+            sharedPreferences: snapshot.data![0] as SharedPreferences,
+            child: ServicesProvider(
+              caffeineService: const CaffeineService(),
+              environment: env.copyWith(hasLightSensor: snapshot.data![1] as bool),
+              hapticsService: const HapticsService(),
+              lightSensorService: const LightSensorService(LocalPlatform()),
+              permissionsService: const PermissionsService(),
+              userPreferencesService:
+                  UserPreferencesService(snapshot.data![0] as SharedPreferences),
+              volumeEventsService: const VolumeEventsService(LocalPlatform()),
+              child: UserPreferencesProvider(
+                child: child,
+              ),
+            ),
+          );
+        } else if (snapshot.error != null) {
+          return Center(child: Text(snapshot.error!.toString()));
+        }
+
+        // TODO(@vodemn): maybe user splashscreen instead
+        return const SizedBox();
+      },
+    );
+  }
+}

lib/main_dev.dart

@@ -1,8 +1,9 @@
 import 'package:flutter/material.dart';
 import 'package:lightmeter/application.dart';
+import 'package:lightmeter/application_wrapper.dart';
 import 'package:lightmeter/environment.dart';
 
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  runApp(const Application(Environment.dev()));
+  runApp(const ApplicationWrapper(Environment.dev(), child: Application()));
 }

lib/main_prod.dart

@@ -1,10 +1,11 @@
 import 'package:flutter/material.dart';
 import 'package:lightmeter/application.dart';
+import 'package:lightmeter/application_wrapper.dart';
 import 'package:lightmeter/environment.dart';
 import 'package:lightmeter/firebase.dart';
 
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
   await initializeFirebase(handleErrors: true);
-  runApp(const Application(Environment.prod()));
+  runApp(const ApplicationWrapper(Environment.prod(), child: Application()));
 }

lib/main_release.dart

@@ -1,10 +1,11 @@
 import 'package:flutter/material.dart';
 import 'package:lightmeter/application.dart';
+import 'package:lightmeter/application_wrapper.dart';
 import 'package:lightmeter/environment.dart';
 import 'package:lightmeter/firebase.dart';
 
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
   await initializeFirebase(handleErrors: false);
-  runApp(const Application(Environment.prod()));
+  runApp(const ApplicationWrapper(Environment.prod(), child: Application()));
 }

lib/platform_config.dart

@@ -5,4 +5,6 @@ class PlatformConfig {
     final rational = const String.fromEnvironment('cameraPreviewAspectRatio').split('/');
     return int.parse(rational[0]) / int.parse(rational[1]);
   }
+
+  static String get cameraStubImage => const String.fromEnvironment('cameraStubImage');
 }

lib/screens/metering/components/camera_container/bloc_container_camera.dart

@@ -2,13 +2,14 @@ import 'dart:async';
 import 'dart:developer';
 import 'dart:io';
 import 'dart:math' as math;
-import 'dart:typed_data';
 
 import 'package:camera/camera.dart';
 import 'package:exif/exif.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:lightmeter/interactors/metering_interactor.dart';
+import 'package:lightmeter/platform_config.dart';
 import 'package:lightmeter/screens/metering/communication/bloc_communication_metering.dart';
 import 'package:lightmeter/screens/metering/communication/event_communication_metering.dart'
     as communication_event;
@@ -32,7 +33,7 @@ class CameraContainerBloc extends EvSourceBlocBase<CameraContainerEvent, CameraC
 
   static const _exposureMaxRange = RangeValues(-4, 4);
   RangeValues? _exposureOffsetRange;
-  double _exposureStep = 0.0;
+  double _exposureStep = 0.1;
   double _currentExposureOffset = 0.0;
 
   double? _ev100 = 0.0;
@@ -199,21 +200,28 @@ class CameraContainerBloc extends EvSourceBlocBase<CameraContainerEvent, CameraC
     );
   }
 
-  bool get _canTakePhoto => !(_cameraController == null ||
+  bool get _canTakePhoto =>
+      PlatformConfig.cameraStubImage.isNotEmpty ||
+      !(_cameraController == null ||
           !_cameraController!.value.isInitialized ||
           _cameraController!.value.isTakingPicture);
 
   Future<double?> _takePhoto() async {
     try {
       // https://github.com/flutter/flutter/issues/84957#issuecomment-1661155095
+
+      late final Uint8List bytes;
+      if (PlatformConfig.cameraStubImage.isNotEmpty) {
+        bytes = (await rootBundle.load(PlatformConfig.cameraStubImage)).buffer.asUint8List();
+      } else {
         await _cameraController!.setFocusMode(FocusMode.locked);
         await _cameraController!.setExposureMode(ExposureMode.locked);
         final file = await _cameraController!.takePicture();
         await _cameraController!.setFocusMode(FocusMode.auto);
         await _cameraController!.setExposureMode(ExposureMode.auto);
-
+        bytes = await file.readAsBytes();
-      final Uint8List bytes = await file.readAsBytes();
         Directory(file.path).deleteSync(recursive: true);
+      }
 
       final tags = await readExifFromBytes(bytes);
       final iso = double.tryParse("${tags["EXIF ISOSpeedRatings"]}");

lib/screens/metering/components/camera_container/components/camera_preview/widget_camera_preview.dart

@@ -69,6 +69,9 @@ class _CameraPreviewBuilderState extends State<_CameraPreviewBuilder> {
 
   @override
   Widget build(BuildContext context) {
+    if (PlatformConfig.cameraStubImage.isNotEmpty) {
+      return Image.asset(PlatformConfig.cameraStubImage);
+    }
     return ValueListenableBuilder<bool>(
       valueListenable: _initializedNotifier,
       builder: (context, value, child) => value

lib/screens/settings/components/shared/dialog_filter/widget_dialog_filter.dart

@@ -34,6 +34,26 @@ class _DialogFilterState<T> extends State<DialogFilter<T>> {
   bool get _hasAnySelected => checkboxValues.contains(true);
   bool get _hasAnyUnselected => checkboxValues.contains(false);
 
+  late final ScrollController _scrollController;
+
+  @override
+  void initState() {
+    super.initState();
+    int i = 0;
+    for (; i < checkboxValues.length; i++) {
+      if (checkboxValues[i]) {
+        break;
+      }
+    }
+    _scrollController = ScrollController(initialScrollOffset: Dimens.grid56 * i);
+  }
+
+  @override
+  void dispose() {
+    _scrollController.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return AlertDialog(
@@ -50,6 +70,7 @@ class _DialogFilterState<T> extends State<DialogFilter<T>> {
           const Divider(),
           Expanded(
             child: SingleChildScrollView(
+              controller: _scrollController,
               child: Column(
                 crossAxisAlignment: CrossAxisAlignment.stretch,
                 mainAxisSize: MainAxisSize.min,

pubspec.yaml

@@ -48,12 +48,16 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
   google_fonts: 3.0.1
+  integration_test:
+    sdk: flutter
   lint: 2.1.2
   mocktail: 0.3.0
   test: 1.24.1
 
 flutter:
   uses-material-design: true
+  assets: 
+    - assets/camera_stub_image.jpg
 
 flutter_intl:
   enabled: true

test_driver/screenshot_driver.dart

@@ -0,0 +1,42 @@
+import 'dart:developer';
+import 'dart:io';
+import 'package:integration_test/integration_test_driver_extended.dart';
+
+Future<void> main() async {
+  try {
+    final bool adbExists = Process.runSync('which', <String>['adb']).exitCode == 0;
+    if (!adbExists) {
+      log(r'This test needs ADB to exist on the $PATH. Skipping...');
+      exit(0);
+    }
+    final deviceId = await Process.run('adb', ["-s", 'shell', 'devices']).then((value) {
+      if (value.stdout is String) {
+        return RegExp(r"(?:List of devices attached\n)([A-Z0-9]*)(?:\sdevice\n)")
+            .firstMatch(value.stdout as String)!
+            .group(1);
+      }
+    });
+    if (deviceId == null) {
+      log('This test needs at least one device connected');
+      exit(0);
+    }
+    await Process.run('adb', [
+      "-s",
+      deviceId, // https://github.com/flutter/flutter/issues/86295#issuecomment-1192766368
+      'shell',
+      'pm',
+      'grant',
+      'com.vodemn.lightmeter.dev',
+      'android.permission.CAMERA'
+    ]);
+    await integrationDriver(
+      onScreenshot: (name, bytes, [args]) async {
+        final File image = await File('screenshots/$name.png').create(recursive: true);
+        image.writeAsBytesSync(bytes);
+        return true;
+      },
+    );
+  } catch (e) {
+    log('Error occured: $e');
+  }
+}