added stub image for camera

.gitignore

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

integration_test/generate_screenshots.dart

@@ -61,7 +61,7 @@ void main() {
 
   setUpAll(() {
     mockUserPreferencesService = _MockUserPreferencesService();
-    when(() => mockUserPreferencesService.evSourceType).thenReturn(EvSourceType.sensor);
+    when(() => mockUserPreferencesService.evSourceType).thenReturn(EvSourceType.camera);
     when(() => mockUserPreferencesService.stopType).thenReturn(StopType.third);
     when(() => mockUserPreferencesService.locale).thenReturn(SupportedLocale.en);
     when(() => mockUserPreferencesService.caffeine).thenReturn(true);
@@ -143,14 +143,16 @@ void main() {
   /// Generates several screenshots with the light theme
   /// and the additionally the first one with the dark theme
   void generateScreenshots(Color color) {
-    testWidgets(
+    testWidgets('${color.value}_light', (tester) async {
-      '${color.value}_light',
+      when(() => mockUserPreferencesService.themeType).thenReturn(ThemeType.light);
-      (tester) async {
       when(() => mockUserPreferencesService.primaryColor).thenReturn(color);
       await pumpApplication(tester);
 
-        //await tester.takeScreenshot(binding, '${color.value}_metering_reflected');
+      await tester.takePhoto();
+      await tester.takeScreenshot(binding, '${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, '${color.value}_metering_incident');
@@ -182,9 +184,7 @@ void main() {
       await tester.tap(find.byIcon(Icons.iso).first);
       await tester.pumpAndSettle();
       await tester.takeScreenshot(binding, '${color.value}_equipment_profiles_iso_picker');
-      },
+    });
-      skip: true,
-    );
 
     testWidgets(
       '${color.value}_dark',
@@ -193,8 +193,11 @@ void main() {
         when(() => mockUserPreferencesService.primaryColor).thenReturn(color);
         await pumpApplication(tester);
 
-        //await tester.takeScreenshot(binding, '${color.value}_metering_reflected');
+        await tester.takePhoto();
+        await tester.takeScreenshot(binding, '${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_dark');
@@ -217,6 +220,12 @@ extension on WidgetTester {
     await pumpAndSettle();
   }
 
+  Future<void> takePhoto() async {
+    await tap(find.byType(MeteringMeasureButton));
+    await pump(const Duration(seconds: 2)); // wait for circular progress indicator
+    await pumpAndSettle();
+  }
+
   Future<void> tapCancelButton() async {
     final cancelButton = find.byWidgetPredicate(
       (widget) =>

integration_test/generate_screenshots.sh

@@ -1,5 +1,6 @@
 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 \

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

@@ -7,8 +7,10 @@ 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 +34,7 @@ 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 +201,28 @@ 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

pubspec.yaml

@@ -54,6 +54,8 @@ dev_dependencies:
 
 flutter:
   uses-material-design: true
+  assets: 
+    - assets/camera_stub_image.jpg
 
 flutter_intl:
   enabled: true

test_driver/screenshot_driver.dart

@@ -4,6 +4,31 @@ 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);