generate single dark screenshots

integration_test/generate_screenshots.dart

@@ -82,6 +82,7 @@ void main() {
 
     mockCaffeineService = _MockCaffeineService();
     when(() => mockCaffeineService.isKeepScreenOn()).thenAnswer((_) async => false);
+    when(() => mockCaffeineService.keepScreenOn(true)).thenAnswer((_) async => true);
     when(() => mockCaffeineService.keepScreenOn(false)).thenAnswer((_) async => false);
 
     mockHapticsService = _MockHapticsService();
@@ -109,12 +110,7 @@ void main() {
     when(() => mockHapticsService.responseVibration()).thenAnswer((_) async {});
   });
 
-  void generateScreenshots(Color color) {
+  Future<void> pumpApplication(WidgetTester tester) async {
-    testWidgets(
-      '${color.value}',
-      (tester) async {
-        when(() => mockUserPreferencesService.primaryColor).thenReturn(color);
-
     await tester.pumpWidget(
       IAPProviders(
         sharedPreferences: _MockSharedPreferences(),
@@ -142,6 +138,16 @@ void main() {
       ),
     );
     await tester.pumpAndSettle();
+  }
+
+  /// Generates several screenshots with the light theme
+  /// and the additionally the first one with the dark theme
+  void generateScreenshots(Color color) {
+    testWidgets(
+      '${color.value}_light',
+      (tester) async {
+        when(() => mockUserPreferencesService.primaryColor).thenReturn(color);
+        await pumpApplication(tester);
 
         //await tester.takeScreenshot(binding, '${color.value}-metering-reflected');
 
@@ -177,6 +183,22 @@ void main() {
         await tester.pumpAndSettle();
         await tester.takeScreenshot(binding, '${color.value}-equipment_profiles-iso_picker');
       },
+      skip: true,
+    );
+
+    testWidgets(
+      '${color.value}_dark',
+      (tester) async {
+        when(() => mockUserPreferencesService.themeType).thenReturn(ThemeType.dark);
+        when(() => mockUserPreferencesService.primaryColor).thenReturn(color);
+        await pumpApplication(tester);
+
+        //await tester.takeScreenshot(binding, '${color.value}-metering-reflected');
+
+        await tester.tap(find.byType(MeteringMeasureButton));
+        await tester.tap(find.byType(MeteringMeasureButton));
+        await tester.takeScreenshot(binding, '${color.value}-metering-incident_dark');
+      },
     );
   }