ML-160 Integration tests (#161)

* test granting and revoking pro features

* extracted common widget tester actions

* test disabling & enabling of the metering screen layout features

* added integration tests to CI

* added integration tests to PR check

* allow matrix jobs to fail

* use base64 -d

* downgraded iphone version to the supported one

* use proper android device name

* typo in macos version

* upgraded iphone version to the supported one

* updated android compileSdkVersion

* added google services json restoration

* combined all tests in one file

* removed ipa signing for ios test

* debug prints :)

* lints

* refined tester extension and expectations

* e2e test (wip)

* added more expectations to e2e test

* changed pickers order a bit in e2e test

* added equipment profiles creation to e2e test

* added film selection to e2e test

* set android emulator API level to 32

* use flutter drive for integration tests

* removed app pre-build

* try running tests only for one platform

* added no-dds to flutter drive

* try running only on ios

* bumped macos version

* increased tests timeout

* set IPHONEOS_DEPLOYMENT_TARGET = 12.0

* removed prints

* Update Podfile

* restore firebase_app_id_file.json

* Delete run_integration_tests.sh

* run e2e with all tests

* reverted pr-check

.github/scripts/restore_from_base64.sh

@@ -11,4 +11,4 @@ if [[ ! -n "$filename" ]]; then
     exit 1
 fi
 
-echo -n "$content" | base64 --decode --output "$filename"
+base64 -d <<< "$content" > "$filename"

.github/workflows/run_integration_tests.yml

@@ -0,0 +1,56 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+name: Run integration tests
+
+on:
+  workflow_dispatch:
+  workflow_call:
+
+jobs:
+  run-integration-tests:
+    name: Run integration tests
+    timeout-minutes: 60
+    runs-on: macos-13
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
+
+      - name: Override iap package with stub
+        id: override-iap
+        run: bash ./.github/scripts/stub_iap.sh
+
+      - name: Restore secrets
+        run: |
+          bash .github/scripts/restore_from_base64.sh "${{ secrets.CONSTANTS }}" "lib/constants.dart"
+          bash .github/scripts/restore_from_base64.sh "${{ secrets.GOOGLE_SERVICES_JSON_IOS }}" "ios/Runner/GoogleService-Info.plist"
+          bash .github/scripts/restore_from_base64.sh "${{ secrets.FIREBASE_APP_ID_FILE }}" "ios/firebase_app_id_file.json"
+
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: "stable"
+          flutter-version: "3.10.0"
+
+      - name: Prepare app
+        run: |
+          flutter --version
+          flutter pub get
+          flutter pub run intl_utils:generate
+          flutter analyze lib --fatal-infos
+
+      - name: Launch iOS simulator
+        uses: futureware-tech/simulator-action@v3
+        with:
+          model: "iPhone 15 Pro"
+
+      - name: Run tests
+        run: |
+          flutter drive \
+            --target=integration_test/run_all_tests.dart \
+            --driver=test_driver/integration_driver.dart \
+            --flavor=dev \
+            --no-dds \
+            --dart-define cameraStubImage=assets/camera_stub_image.jpg

android/app/build.gradle

@@ -34,7 +34,7 @@ apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 33
+    compileSdkVersion 34
     ndkVersion flutter.ndkVersion
 
     compileOptions {

integration_test/README.md

@@ -0,0 +1,18 @@
+# M3 Lightmeter integration tests
+
+### List of executed tests:
+
+- [Purchases test](integration_test/purchases_test.dart)
+- [Metering screen layout test](integration_test/metering_screen_layout_test.dart)
+- [e2e](integration_test/e2e_test.dart)
+
+### Run all tests
+
+```console
+flutter drive \
+    --target=integration_test/run_all_tests.dart \
+    --driver=test_driver/integration_driver.dart \
+    --flavor=dev \
+    --no-dds \
+    --dart-define cameraStubImage=assets/camera_stub_image.jpg
+```

integration_test/e2e_test.dart

@@ -0,0 +1,302 @@
+import 'dart:convert';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:lightmeter/data/models/ev_source_type.dart';
+import 'package:lightmeter/data/models/metering_screen_layout_config.dart';
+import 'package:lightmeter/data/shared_prefs_service.dart';
+import 'package:lightmeter/generated/l10n.dart';
+import 'package:lightmeter/res/dimens.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/equipment_profile_picker/widget_picker_equipment_profiles.dart';
+import 'package:lightmeter/screens/metering/components/shared/readings_container/components/film_picker/widget_picker_film.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/nd_picker/widget_picker_nd.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/shared/dialog_filter/widget_dialog_filter.dart';
+import 'package:lightmeter/screens/settings/components/shared/dialog_range_picker/widget_dialog_picker_range.dart';
+import 'package:lightmeter/screens/settings/screen_settings.dart';
+import 'package:m3_lightmeter_resources/m3_lightmeter_resources.dart';
+import 'package:meta/meta.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../integration_test/utils/widget_tester_actions.dart';
+import 'mocks/paid_features_mock.dart';
+import 'utils/expectations.dart';
+
+@isTest
+void testE2E(String description) {
+  setUp(() {
+    SharedPreferences.setMockInitialValues({
+      /// Metering values
+      UserPreferencesService.evSourceTypeKey: EvSourceType.camera.index,
+      UserPreferencesService.meteringScreenLayoutKey: json.encode(
+        {
+          MeteringScreenLayoutFeature.equipmentProfiles: true,
+          MeteringScreenLayoutFeature.extremeExposurePairs: true,
+          MeteringScreenLayoutFeature.filmPicker: true,
+        }.toJson(),
+      ),
+    });
+  });
+
+  testWidgets(
+    description,
+    (tester) async {
+      await tester.pumpApplication(equipmentProfiles: [], films: []);
+
+      /// Create Praktica + Zenitar profile from scratch
+      await tester.openSettings();
+      await tester.tapDescendantTextOf<SettingsScreen>(S.current.equipmentProfiles);
+      await tester.tap(find.byIcon(Icons.add).first);
+      await tester.pumpAndSettle();
+      await tester.setProfileName(mockEquipmentProfiles[0].name);
+      await tester.expandEquipmentProfileContainer(mockEquipmentProfiles[0].name);
+      await tester.setIsoValues(0, mockEquipmentProfiles[0].isoValues);
+      await tester.setNdValues(0, mockEquipmentProfiles[0].ndValues);
+      await tester.setApertureValues(0, mockEquipmentProfiles[0].apertureValues);
+      await tester.setShutterSpeedValues(0, mockEquipmentProfiles[0].shutterSpeedValues);
+      expect(find.text('f/1.7 - f/16'), findsOneWidget);
+      expect(find.text('1/1000 - 16"'), findsOneWidget);
+
+      /// Create Praktica + Jupiter profile from Zenitar profile
+      await tester.tap(find.byIcon(Icons.copy).first);
+      await tester.pumpAndSettle();
+      await tester.setProfileName(mockEquipmentProfiles[1].name);
+      await tester.expandEquipmentProfileContainer(mockEquipmentProfiles[1].name);
+      await tester.setApertureValues(1, mockEquipmentProfiles[1].apertureValues);
+      expect(find.text('f/3.5 - f/22'), findsOneWidget);
+      expect(find.text('1/1000 - 16"'), findsNWidgets(2));
+      await tester.navigatorPop();
+
+      /// Select some films
+      await tester.tap(find.text(S.current.filmsInUse));
+      await tester.pumpAndSettle();
+      await tester.setDialogFilterValues<Film>([mockFilms[0], mockFilms[1]], deselectAll: false);
+      await tester.navigatorPop();
+
+      /// Select some initial settings according to the selected gear and film
+      /// Then take a photo and verify, that exposure pairs range and EV matches the selected settings
+      await tester.openPickerAndSelect<EquipmentProfilePicker, EquipmentProfile>(mockEquipmentProfiles[0].name);
+      await tester.openPickerAndSelect<FilmPicker, Film>(mockFilms[0].name);
+      await tester.openPickerAndSelect<IsoValuePicker, IsoValue>('400');
+      expectPickerTitle<EquipmentProfilePicker>(mockEquipmentProfiles[0].name);
+      expectPickerTitle<FilmPicker>(mockFilms[0].name);
+      expectPickerTitle<IsoValuePicker>('400');
+      await tester.takePhoto();
+      await _expectMeteringState(
+        tester,
+        equipmentProfile: mockEquipmentProfiles[0],
+        film: mockFilms[0],
+        fastest: 'f/1.8 - 1/400',
+        slowest: 'f/16 - 1/5',
+        iso: '400',
+        nd: 'None',
+        ev: mockPhotoEv100 + 2,
+      );
+
+      /// Add ND to shoot another scene
+      await tester.openPickerAndSelect<NdValuePicker, NdValue>('2');
+      await _expectMeteringStateAndMeasure(
+        tester,
+        equipmentProfile: mockEquipmentProfiles[0],
+        film: mockFilms[0],
+        fastest: 'f/1.8 - 1/200',
+        slowest: 'f/16 - 1/2.5',
+        iso: '400',
+        nd: '2',
+        ev: mockPhotoEv100 + 2 - 1,
+      );
+
+      /// Select another lens without ND
+      await tester.openPickerAndSelect<EquipmentProfilePicker, EquipmentProfile>(mockEquipmentProfiles[1].name);
+      await tester.openPickerAndSelect<NdValuePicker, NdValue>('None');
+      await _expectMeteringStateAndMeasure(
+        tester,
+        equipmentProfile: mockEquipmentProfiles[1],
+        film: mockFilms[0],
+        fastest: 'f/3.5 - 1/100',
+        slowest: 'f/22 - 1/2.5',
+        iso: '400',
+        nd: 'None',
+        ev: mockPhotoEv100 + 2,
+      );
+
+      /// Set another film and another ISO
+      await tester.openPickerAndSelect<IsoValuePicker, IsoValue>('200');
+      await tester.openPickerAndSelect<FilmPicker, Film>(mockFilms[1].name);
+      await _expectMeteringStateAndMeasure(
+        tester,
+        equipmentProfile: mockEquipmentProfiles[1],
+        film: mockFilms[1],
+        fastest: 'f/3.5 - 1/50',
+        slowest: 'f/22 - 1/1.3',
+        iso: '200',
+        nd: 'None',
+        ev: mockPhotoEv100 + 1,
+      );
+    },
+  );
+}
+
+extension EquipmentProfileActions on WidgetTester {
+  Future<void> expandEquipmentProfileContainer(String name) async {
+    await tap(find.text(name));
+    await pump(Dimens.durationM);
+  }
+
+  Future<void> setProfileName(String name) async {
+    await enterText(find.byType(TextField), name);
+    await pump();
+    await tapSaveButton();
+  }
+
+  Future<void> setIsoValues(int profileIndex, List<IsoValue> values) =>
+      _openAndSetDialogFilterValues<IsoValue>(profileIndex, S.current.isoValues, values);
+  Future<void> setNdValues(int profileIndex, List<NdValue> values) =>
+      _openAndSetDialogFilterValues<NdValue>(profileIndex, S.current.ndFilters, values);
+  Future<void> _openAndSetDialogFilterValues<T extends PhotographyValue>(
+    int profileIndex,
+    String listTileTitle,
+    List<T> valuesToSelect, {
+    bool deselectAll = true,
+  }) async {
+    await tap(find.text(listTileTitle).at(profileIndex));
+    await pumpAndSettle();
+    await setDialogFilterValues(valuesToSelect, deselectAll: deselectAll);
+  }
+
+  Future<void> setApertureValues(int profileIndex, List<ApertureValue> values) =>
+      _setDialogRangePickerValues<ApertureValue>(profileIndex, S.current.apertureValues, values);
+
+  Future<void> setShutterSpeedValues(int profileIndex, List<ShutterSpeedValue> values) =>
+      _setDialogRangePickerValues<ShutterSpeedValue>(profileIndex, S.current.shutterSpeedValues, values);
+}
+
+extension on WidgetTester {
+  Future<void> openPickerAndSelect<P extends Widget, V>(String valueToSelect) async {
+    await openAnimatedPicker<P>();
+    await tapDescendantTextOf<DialogPicker<V>>(valueToSelect);
+    await tapSelectButton();
+  }
+
+  Future<void> setDialogFilterValues<T>(
+    List<T> valuesToSelect, {
+    bool deselectAll = true,
+  }) async {
+    if (deselectAll) {
+      await tap(find.byIcon(Icons.deselect));
+      await pump();
+    }
+    for (final value in valuesToSelect) {
+      final listTile = find.descendant(of: find.byType(CheckboxListTile), matching: find.text(value.toString()));
+      await scrollUntilVisible(
+        listTile,
+        56,
+        scrollable: find.descendant(of: find.byType(DialogFilter<T>), matching: find.byType(Scrollable)),
+      );
+      await tap(listTile);
+      await pump();
+    }
+    await tapSaveButton();
+  }
+
+  Future<void> _setDialogRangePickerValues<T extends PhotographyValue>(
+    int profileIndex,
+    String listTileTitle,
+    List<T> valuesToSelect,
+  ) async {
+    await tap(find.text(listTileTitle).at(profileIndex));
+    await pumpAndSettle();
+
+    final dialog = widget<DialogRangePicker<T>>(find.byType(DialogRangePicker<T>));
+    final sliderFinder = find.byType(RangeSlider);
+    final divisions = widget<RangeSlider>(sliderFinder).divisions!;
+    final trackWidth = getSize(sliderFinder).width - (2 * Dimens.paddingL);
+    final trackStep = trackWidth / divisions;
+
+    final start = valuesToSelect.first;
+    final oldStart = dialog.values.indexWhere((e) => e.value == dialog.selectedValues.first.value) * trackStep;
+    final newStart = dialog.values.indexWhere((e) => e.value == start.value) * trackStep;
+    await dragFrom(
+      getTopLeft(sliderFinder) + Offset(Dimens.paddingL + oldStart, getSize(sliderFinder).height / 2),
+      Offset(newStart - oldStart, 0),
+    );
+    await pump();
+
+    final end = valuesToSelect.last;
+    final oldEnd = dialog.values.indexWhere((e) => e.value == dialog.selectedValues.last.value) * trackStep;
+    final newEnd = dialog.values.indexWhere((e) => e.value == end.value) * trackStep;
+    await dragFrom(
+      getTopLeft(sliderFinder) + Offset(Dimens.paddingL + oldEnd, getSize(sliderFinder).height / 2),
+      Offset(newEnd - oldEnd, 0),
+    );
+    await pump();
+
+    await tapSaveButton();
+  }
+}
+
+Future<void> _expectMeteringState(
+  WidgetTester tester, {
+  required EquipmentProfile equipmentProfile,
+  required Film film,
+  required String fastest,
+  required String slowest,
+  required String iso,
+  required String nd,
+  required double ev,
+  String? reason,
+}) async {
+  expectPickerTitle<EquipmentProfilePicker>(equipmentProfile.name);
+  expectPickerTitle<FilmPicker>(film.name);
+  expectExtremeExposurePairs(fastest, slowest);
+  expectPickerTitle<IsoValuePicker>(iso);
+  expectPickerTitle<NdValuePicker>(nd);
+  expectExposurePairsListItem(tester, fastest.split(' - ')[0], fastest.split(' - ')[1]);
+  await tester.scrollToTheLastExposurePair(equipmentProfile: equipmentProfile);
+  expectExposurePairsListItem(tester, slowest.split(' - ')[0], slowest.split(' - ')[1]);
+  expectMeasureButton(ev);
+}
+
+Future<void> _expectMeteringStateAndMeasure(
+  WidgetTester tester, {
+  required EquipmentProfile equipmentProfile,
+  required Film film,
+  required String fastest,
+  required String slowest,
+  required String iso,
+  required String nd,
+  required double ev,
+}) async {
+  await _expectMeteringState(
+    tester,
+    equipmentProfile: equipmentProfile,
+    film: film,
+    fastest: fastest,
+    slowest: slowest,
+    iso: iso,
+    nd: nd,
+    ev: ev,
+  );
+  await tester.takePhoto();
+  await _expectMeteringState(
+    tester,
+    equipmentProfile: equipmentProfile,
+    film: film,
+    fastest: fastest,
+    slowest: slowest,
+    iso: iso,
+    nd: nd,
+    ev: ev,
+    reason:
+        'Metering screen state must be the same before and after the measurement assuming that the scene is exactly the same.',
+  );
+}
+
+void expectMeasureButton(double ev) {
+  find.descendant(
+    of: find.byType(MeteringMeasureButton),
+    matching: find.text('${ev.toStringAsFixed(1)}\n${S.current.ev}'),
+  );
+}

integration_test/metering_screen_layout_test.dart

@@ -0,0 +1,191 @@
+import 'dart:convert';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:lightmeter/data/models/ev_source_type.dart';
+import 'package:lightmeter/data/models/metering_screen_layout_config.dart';
+import 'package:lightmeter/data/shared_prefs_service.dart';
+import 'package:lightmeter/generated/l10n.dart';
+import 'package:lightmeter/screens/metering/components/shared/readings_container/components/equipment_profile_picker/widget_picker_equipment_profiles.dart';
+import 'package:lightmeter/screens/metering/components/shared/readings_container/components/extreme_exposure_pairs_container/widget_container_extreme_exposure_pairs.dart';
+import 'package:lightmeter/screens/metering/components/shared/readings_container/components/film_picker/widget_picker_film.dart';
+import 'package:lightmeter/screens/settings/screen_settings.dart';
+import 'package:meta/meta.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../integration_test/utils/widget_tester_actions.dart';
+import 'mocks/paid_features_mock.dart';
+import 'utils/expectations.dart';
+
+@isTestGroup
+void testToggleLayoutFeatures(String description) {
+  group(
+    description,
+    () {
+      setUp(() {
+        SharedPreferences.setMockInitialValues({
+          /// Metering values
+          UserPreferencesService.evSourceTypeKey: EvSourceType.camera.index,
+          UserPreferencesService.meteringScreenLayoutKey: json.encode(
+            {
+              MeteringScreenLayoutFeature.equipmentProfiles: true,
+              MeteringScreenLayoutFeature.extremeExposurePairs: true,
+              MeteringScreenLayoutFeature.filmPicker: true,
+            }.toJson(),
+          ),
+        });
+      });
+
+      testWidgets(
+        'Equipment profile picker',
+        (tester) async {
+          await tester.pumpApplication(selectedEquipmentProfileId: mockEquipmentProfiles.first.id);
+          await tester.takePhoto();
+          expectPickerTitle<EquipmentProfilePicker>(mockEquipmentProfiles.first.name);
+          expectExtremeExposurePairs('f/1.8 - 1/100', 'f/16 - 1/1.3');
+          expectExposurePairsListItem(tester, 'f/1.8', '1/100');
+          await tester.scrollToTheLastExposurePair(equipmentProfile: mockEquipmentProfiles.first);
+          expectExposurePairsListItem(tester, 'f/16', '1/1.3');
+
+          // Disable layout feature
+          await tester.toggleLayoutFeature(S.current.meteringScreenLayoutHintEquipmentProfiles);
+          expect(
+            find.byType(EquipmentProfilePicker),
+            findsNothing,
+            reason:
+                'Equipment profile picker must be hidden from the metering screen when the corresponding layout feature is disabled.',
+          );
+          expectExtremeExposurePairs(
+            'f/1.0 - 1/320',
+            'f/45 - 6"',
+            reason: 'Aperture and shutter speed ranges must be reset to default values when equipment profile is reset',
+          );
+          expectExposurePairsListItem(
+            tester,
+            'f/1.0',
+            '1/320',
+            reason:
+                'Aperture and shutter speed ranges must be reset to default values when equipment profile is reset.',
+          );
+          await tester.scrollToTheLastExposurePair();
+          expectExposurePairsListItem(
+            tester,
+            'f/45',
+            '6"',
+            reason:
+                'Aperture and shutter speed ranges must be reset to default values when equipment profile is reset.',
+          );
+
+          // Enable layout feature
+          await tester.toggleLayoutFeature(S.current.meteringScreenLayoutHintEquipmentProfiles);
+          expectPickerTitle<EquipmentProfilePicker>(
+            S.current.none,
+            reason: 'Equipment profile must remain unselected when the corresponding layout feature is re-enabled.',
+          );
+        },
+      );
+
+      testWidgets(
+        'Extreme exposure pairs container',
+        (tester) async {
+          await tester.pumpApplication();
+          await tester.takePhoto();
+          expectExtremeExposurePairs('f/1.0 - 1/320', 'f/45 - 6"');
+          expectExposurePairsListItem(tester, 'f/1.0', '1/320');
+          await tester.scrollToTheLastExposurePair();
+          expectExposurePairsListItem(tester, 'f/45', '6"');
+
+          // Disable layout feature
+          await tester.toggleLayoutFeature(S.current.meteringScreenFeatureExtremeExposurePairs);
+          expect(
+            find.byType(ExtremeExposurePairsContainer),
+            findsNothing,
+            reason:
+                'Extreme exposure pairs container must be hidden from the metering screen when the corresponding layout feature is disabled.',
+          );
+          expectExposurePairsListItem(
+            tester,
+            'f/1.0',
+            '1/320',
+            reason:
+                'Exposure pairs list must not be affected by the visibility of the extreme exposure pairs container.',
+          );
+          await tester.scrollToTheLastExposurePair();
+          expectExposurePairsListItem(
+            tester,
+            'f/45',
+            '6"',
+            reason:
+                'Exposure pairs list must not be affected by the visibility of the extreme exposure pairs container.',
+          );
+
+          // Enable layout feature
+          await tester.toggleLayoutFeature(S.current.meteringScreenFeatureExtremeExposurePairs);
+          expectExtremeExposurePairs(
+            'f/1.0 - 1/320',
+            'f/45 - 6"',
+            reason:
+                'Exposure pairs list must not be affected by the visibility of the extreme exposure pairs container.',
+          );
+        },
+      );
+
+      testWidgets(
+        'Film picker',
+        (tester) async {
+          await tester.pumpApplication(selectedFilm: mockFilms.first);
+          await tester.takePhoto();
+          expectPickerTitle<FilmPicker>(mockFilms.first.name);
+          expectExtremeExposurePairs('f/1.0 - 1/320', 'f/45 - 12"');
+          expectExposurePairsListItem(tester, 'f/1.0', '1/320');
+          await tester.scrollToTheLastExposurePair();
+          expectExposurePairsListItem(tester, 'f/45', '12"');
+
+          // Disable layout feature
+          await tester.toggleLayoutFeature(S.current.meteringScreenFeatureFilmPicker);
+          expect(
+            find.byType(FilmPicker),
+            findsNothing,
+            reason:
+                'Film picker must be hidden from the metering screen when the corresponding layout feature is disabled.',
+          );
+          expectExtremeExposurePairs(
+            'f/1.0 - 1/320',
+            'f/45 - 6"',
+            reason: 'Shutter speed must not be affected by reciprocity when film is discarded.',
+          );
+          expectExposurePairsListItem(
+            tester,
+            'f/1.0',
+            '1/320',
+            reason: 'Shutter speed must not be affected by reciprocity when film is discarded.',
+          );
+          await tester.scrollToTheLastExposurePair();
+          expectExposurePairsListItem(
+            tester,
+            'f/45',
+            '6"',
+            reason: 'Shutter speed must not be affected by reciprocity when film is discarded.',
+          );
+
+          // Enable layout feature
+          await tester.toggleLayoutFeature(S.current.meteringScreenFeatureFilmPicker);
+          expectPickerTitle<FilmPicker>(
+            S.current.none,
+            reason: 'Film must remain unselected when the corresponding layout feature is re-enabled.',
+          );
+        },
+      );
+    },
+  );
+}
+
+extension on WidgetTester {
+  Future<void> toggleLayoutFeature(String feature) async {
+    await openSettings();
+    await tapDescendantTextOf<SettingsScreen>(S.current.meteringScreenLayout);
+    await tapDescendantTextOf<SwitchListTile>(feature);
+    await tapSaveButton();
+    await navigatorPop();
+  }
+}

integration_test/mocks/iap_products_mock.dart

@@ -0,0 +1,45 @@
+import 'package:flutter/material.dart';
+import 'package:m3_lightmeter_iap/m3_lightmeter_iap.dart';
+
+@visibleForTesting
+class MockIAPProductsProvider extends StatefulWidget {
+  final bool initialyPurchased;
+  final Widget child;
+
+  const MockIAPProductsProvider({this.initialyPurchased = true, required this.child, super.key});
+
+  static MockIAPProductsProviderState of(BuildContext context) => MockIAPProductsProvider.maybeOf(context)!;
+
+  static MockIAPProductsProviderState? maybeOf(BuildContext context) {
+    return context.findAncestorStateOfType<MockIAPProductsProviderState>();
+  }
+
+  @override
+  State<MockIAPProductsProvider> createState() => MockIAPProductsProviderState();
+}
+
+class MockIAPProductsProviderState extends State<MockIAPProductsProvider> {
+  late bool _purchased = widget.initialyPurchased;
+  @override
+  Widget build(BuildContext context) {
+    return IAPProducts(
+      products: List.from([
+        IAPProduct(
+          storeId: IAPProductType.paidFeatures.storeId,
+          status: _purchased ? IAPProductStatus.purchased : IAPProductStatus.purchasable,
+        )
+      ]),
+      child: widget.child,
+    );
+  }
+
+  void buy() {
+    _purchased = true;
+    setState(() {});
+  }
+
+  void clearPurchases() {
+    _purchased = false;
+    setState(() {});
+  }
+}

integration_test/mocks/paid_features_mock.dart

@@ -8,9 +8,9 @@ import 'package:mocktail/mocktail.dart';
 class _MockIAPStorageService extends Mock implements IAPStorageService {}
 
 class MockIAPProviders extends StatefulWidget {
-  final List<EquipmentProfile> equipmentProfiles;
+  final List<EquipmentProfile>? equipmentProfiles;
   final String selectedEquipmentProfileId;
-  final List<Film> films;
+  final List<Film>? films;
   final Film selectedFilm;
   final Widget child;
 
@@ -34,9 +34,9 @@ class _MockIAPProvidersState extends State<MockIAPProviders> {
   void initState() {
     super.initState();
     mockIAPStorageService = _MockIAPStorageService();
-    when(() => mockIAPStorageService.equipmentProfiles).thenReturn(mockEquipmentProfiles);
+    when(() => mockIAPStorageService.equipmentProfiles).thenReturn(widget.equipmentProfiles ?? mockEquipmentProfiles);
     when(() => mockIAPStorageService.selectedEquipmentProfileId).thenReturn(widget.selectedEquipmentProfileId);
-    when(() => mockIAPStorageService.filmsInUse).thenReturn(mockFilms);
+    when(() => mockIAPStorageService.filmsInUse).thenReturn(widget.films ?? mockFilms);
     when(() => mockIAPStorageService.selectedFilm).thenReturn(widget.selectedFilm);
   }
 
@@ -92,13 +92,34 @@ final mockEquipmentProfiles = [
       IsoValue(3200, StopType.full),
     ],
   ),
-  const EquipmentProfile(
+  EquipmentProfile(
     id: '2',
     name: 'Praktica + Jupiter',
-    apertureValues: ApertureValue.values,
+    apertureValues: ApertureValue.values.sublist(
-    ndValues: NdValue.values,
+      ApertureValue.values.indexOf(const ApertureValue(3.5, StopType.third)),
-    shutterSpeedValues: ShutterSpeedValue.values,
+      ApertureValue.values.indexOf(const ApertureValue(22, StopType.full)) + 1,
-    isoValues: IsoValue.values,
+    ),
+    ndValues: const [
+      NdValue(0),
+      NdValue(2),
+      NdValue(4),
+      NdValue(8),
+    ],
+    shutterSpeedValues: ShutterSpeedValue.values.sublist(
+      ShutterSpeedValue.values.indexOf(const ShutterSpeedValue(1000, true, StopType.full)),
+      ShutterSpeedValue.values.indexOf(const ShutterSpeedValue(16, false, StopType.full)) + 1,
+    ),
+    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),
+    ],
   ),
 ];
 

integration_test/purchases_test.dart

@@ -0,0 +1,109 @@
+import 'dart:convert';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:lightmeter/data/models/ev_source_type.dart';
+import 'package:lightmeter/data/models/metering_screen_layout_config.dart';
+import 'package:lightmeter/data/shared_prefs_service.dart';
+import 'package:lightmeter/generated/l10n.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/equipment_profile_picker/widget_picker_equipment_profiles.dart';
+import 'package:lightmeter/screens/metering/components/shared/readings_container/components/extreme_exposure_pairs_container/widget_container_extreme_exposure_pairs.dart';
+import 'package:lightmeter/screens/metering/components/shared/readings_container/components/film_picker/widget_picker_film.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/nd_picker/widget_picker_nd.dart';
+import 'package:lightmeter/screens/settings/components/shared/disable/widget_disable.dart';
+import 'package:lightmeter/screens/settings/screen_settings.dart';
+import 'package:m3_lightmeter_iap/m3_lightmeter_iap.dart';
+import 'package:meta/meta.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../integration_test/utils/widget_tester_actions.dart';
+import 'mocks/iap_products_mock.dart';
+
+@isTest
+void testPurchases(String description) {
+  testWidgets(
+    description,
+    (tester) async {
+      SharedPreferences.setMockInitialValues({
+        /// Metering values
+        UserPreferencesService.evSourceTypeKey: EvSourceType.camera.index,
+        UserPreferencesService.showEv100Key: true,
+        UserPreferencesService.meteringScreenLayoutKey: json.encode(
+          {
+            MeteringScreenLayoutFeature.equipmentProfiles: true,
+            MeteringScreenLayoutFeature.extremeExposurePairs: true,
+            MeteringScreenLayoutFeature.filmPicker: true,
+          }.toJson(),
+        ),
+      });
+
+      await tester.pumpApplication(productStatus: IAPProductStatus.purchasable);
+      await tester.takePhoto();
+
+      /// Expect the bare minimum free functionallity
+      _expectProMeteringScreen(enabled: false);
+
+      /// Check, that premium settings are disabled
+      await tester.openSettings();
+      await _expectProSettingsScreen(tester, enabled: false);
+
+      /// Make purchase
+      (tester.state(find.byType(MockIAPProductsProvider)) as MockIAPProductsProviderState).buy();
+      await tester.pumpAndSettle();
+
+      /// Check, that premium settings are enabled
+      await _expectProSettingsScreen(tester, enabled: true);
+
+      /// Expect, that all the premium controls are now available to user
+      await tester.navigatorPop();
+      _expectProMeteringScreen(enabled: true);
+
+      /// Refund
+      (tester.state(find.byType(MockIAPProductsProvider)) as MockIAPProductsProviderState).clearPurchases();
+      await tester.pumpAndSettle();
+
+      /// Expect the bare minimum free functionallity
+      _expectProMeteringScreen(enabled: false);
+
+      /// Check, that premium settings are disabled
+      await tester.openSettings();
+      await _expectProSettingsScreen(tester, enabled: false);
+    },
+  );
+}
+
+void _expectProMeteringScreen({required bool enabled}) {
+  expect(find.byType(EquipmentProfilePicker), enabled ? findsOneWidget : findsNothing);
+  expect(find.byType(ExtremeExposurePairsContainer), findsOneWidget);
+  expect(find.byType(FilmPicker), enabled ? findsOneWidget : findsNothing);
+  expect(find.byType(IsoValuePicker), findsOneWidget);
+  expect(find.byType(NdValuePicker), findsOneWidget);
+  expect(
+    find.descendant(
+      of: find.byType(MeteringMeasureButton),
+      matching: find.byWidgetPredicate((widget) => widget is Text && widget.data!.contains('\u2081\u2080\u2080')),
+    ),
+    enabled ? findsOneWidget : findsNothing,
+  );
+}
+
+Future<void> _expectProSettingsScreen(WidgetTester tester, {required bool enabled}) async {
+  void expectDisabled(String title, bool disabled) {
+    find.ancestor(
+      of: find.text(title),
+      matching: find.byWidgetPredicate((widget) => widget is Disable && widget.disable == disabled),
+    );
+  }
+
+  expectDisabled(S.current.showEv100, !enabled);
+  expectDisabled(S.current.equipmentProfiles, !enabled);
+  expectDisabled(S.current.filmsInUse, !enabled);
+  expectDisabled(S.current.cameraFeatures, !enabled);
+  await tester.tapDescendantTextOf<SettingsScreen>(S.current.meteringScreenLayout);
+  expectDisabled(S.current.meteringScreenLayoutHintEquipmentProfiles, !enabled);
+  expectDisabled(S.current.meteringScreenFeatureExtremeExposurePairs, false); // must be always enabled
+  expectDisabled(S.current.meteringScreenFeatureFilmPicker, !enabled);
+  await tester.tapCancelButton();
+}

integration_test/run_all_tests.dart

@@ -0,0 +1,13 @@
+import 'package:integration_test/integration_test.dart';
+
+import 'e2e_test.dart';
+import 'metering_screen_layout_test.dart';
+import 'purchases_test.dart';
+
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+
+  testPurchases('Purchase & refund premium features');
+  testToggleLayoutFeatures('Toggle metering screen layout features');
+  testE2E('e2e');
+}

integration_test/utils/expectations.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/widgets.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:lightmeter/screens/metering/components/shared/exposure_pairs_list/components/exposure_pairs_list_item/widget_item_list_exposure_pairs.dart';
+import 'package:lightmeter/screens/metering/components/shared/exposure_pairs_list/widget_list_exposure_pairs.dart';
+import 'package:lightmeter/screens/metering/components/shared/readings_container/components/extreme_exposure_pairs_container/widget_container_extreme_exposure_pairs.dart';
+import 'package:m3_lightmeter_resources/m3_lightmeter_resources.dart';
+
+void expectPickerTitle<P extends Widget>(String title, {String? reason}) {
+  expect(find.descendant(of: find.byType(P), matching: find.text(title)), findsOneWidget, reason: reason);
+}
+
+void expectExtremeExposurePairs(String fastest, String slowest, {String? reason}) {
+  final pickerFinder = find.byType(ExtremeExposurePairsContainer);
+  expect(find.descendant(of: pickerFinder, matching: find.text(fastest)), findsOneWidget, reason: reason);
+  expect(find.descendant(of: pickerFinder, matching: find.text(slowest)), findsOneWidget, reason: reason);
+}
+
+void expectExposurePairsListItem(WidgetTester tester, String aperture, String shutterSpeed, {String? reason}) {
+  Key? findKey<T extends PhotographyStopValue<num>>(String value) => tester
+      .widget<Row>(
+        find.ancestor(
+          of: find.ancestor(
+            of: find.text(value),
+            matching: find.byType(ExposurePairsListItem<T>),
+          ),
+          matching: find.descendant(of: find.byType(ExposurePairsList), matching: find.byType(Row)),
+        ),
+      )
+      .key;
+  expect(
+    findKey<ApertureValue>(aperture),
+    findKey<ShutterSpeedValue>(shutterSpeed),
+    reason: reason,
+  );
+}

integration_test/utils/widget_tester_actions.dart

@@ -6,30 +6,34 @@ import 'package:lightmeter/environment.dart';
 import 'package:lightmeter/generated/l10n.dart';
 import 'package:lightmeter/res/dimens.dart';
 import 'package:lightmeter/screens/metering/components/bottom_controls/components/measure_button/widget_button_measure.dart';
+import 'package:lightmeter/screens/metering/components/shared/exposure_pairs_list/widget_list_exposure_pairs.dart';
+import 'package:lightmeter/screens/metering/screen_metering.dart';
 import 'package:m3_lightmeter_iap/m3_lightmeter_iap.dart';
 import 'package:m3_lightmeter_resources/m3_lightmeter_resources.dart';
 
+import '../mocks/iap_products_mock.dart';
 import '../mocks/paid_features_mock.dart';
 import 'platform_channel_mock.dart';
 
+const mockPhotoEv100 = 8.3;
+
 extension WidgetTesterCommonActions on WidgetTester {
   Future<void> pumpApplication({
     IAPProductStatus productStatus = IAPProductStatus.purchased,
+    List<EquipmentProfile>? equipmentProfiles,
     String selectedEquipmentProfileId = '',
+    List<Film>? films,
     Film selectedFilm = const Film.other(),
   }) async {
     await pumpWidget(
-      IAPProducts(
+      MockIAPProductsProvider(
-        products: [
+        initialyPurchased: productStatus == IAPProductStatus.purchased,
-          IAPProduct(
-            storeId: IAPProductType.paidFeatures.storeId,
-            status: productStatus,
-          ),
-        ],
         child: ApplicationWrapper(
           const Environment.dev(),
           child: MockIAPProviders(
+            equipmentProfiles: equipmentProfiles,
             selectedEquipmentProfileId: selectedEquipmentProfileId,
+            films: films,
             selectedFilm: selectedFilm,
             child: const Application(),
           ),
@@ -57,6 +61,16 @@ extension WidgetTesterCommonActions on WidgetTester {
     await tap(find.byType(T));
     await pumpAndSettle(Dimens.durationL);
   }
+
+  Future<void> openSettings() async {
+    await tap(find.byTooltip(S.current.tooltipOpenSettings));
+    await pumpAndSettle();
+  }
+
+  Future<void> navigatorPop() async {
+    (state(find.byType(Navigator)) as NavigatorState).pop();
+    await pumpAndSettle(Dimens.durationML);
+  }
 }
 
 extension WidgetTesterListTileActions on WidgetTester {
@@ -83,3 +97,22 @@ extension WidgetTesterTextButtonActions on WidgetTester {
     await pumpAndSettle();
   }
 }
+
+extension WidgetTesterExposurePairsListActions on WidgetTester {
+  Future<void> scrollToTheLastExposurePair({
+    double ev = mockPhotoEv100,
+    StopType stopType = StopType.third,
+    EquipmentProfile equipmentProfile = defaultEquipmentProfile,
+  }) async {
+    final exposurePairs = MeteringContainerBuidler.buildExposureValues(
+      ev,
+      StopType.third,
+      equipmentProfile,
+    );
+    await scrollUntilVisible(
+      find.byWidgetPredicate((widget) => widget is Row && widget.key == ValueKey(exposurePairs.length - 1)),
+      56,
+      scrollable: find.descendant(of: find.byType(ExposurePairsList), matching: find.byType(Scrollable)),
+    );
+  }
+}

ios/Podfile

@@ -1,5 +1,5 @@
 # Uncomment this line to define a global platform for your project
-platform :ios, '11.0'
+platform :ios, '12.0'
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'
@@ -38,6 +38,10 @@ post_install do |installer|
   installer.pods_project.targets.each do |target|
     flutter_additional_ios_build_settings(target)
 
+    target.build_configurations.each do |config|
+      config.build_settings.delete 'IPHONEOS_DEPLOYMENT_TARGET'
+    end
+
     # Start of the permission_handler configuration
     target.build_configurations.each do |config|
       # https://github.com/CocoaPods/CocoaPods/issues/12012

ios/Runner.xcodeproj/project.pbxproj

@@ -407,6 +407,7 @@
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
 				INFOPLIST_KEY_CFBundleDisplayName = Lightmeter;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -544,6 +545,7 @@
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
 				INFOPLIST_KEY_CFBundleDisplayName = Lightmeter;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -575,6 +577,7 @@
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
 				INFOPLIST_KEY_CFBundleDisplayName = Lightmeter;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -658,6 +661,7 @@
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
 				INFOPLIST_KEY_CFBundleDisplayName = "Lightmeter (DEV)";
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -738,6 +742,7 @@
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
 				INFOPLIST_KEY_CFBundleDisplayName = "Lightmeter (DEV)";
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -815,6 +820,7 @@
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
 				INFOPLIST_KEY_CFBundleDisplayName = "Lightmeter (DEV)";
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",

pubspec.yaml

@@ -52,6 +52,7 @@ dev_dependencies:
   integration_test:
     sdk: flutter
   lint: 2.1.2
+  meta: 1.9.1
   mocktail: 0.3.0
   test: 1.24.1
 

test_driver/integration_driver.dart

@@ -1,8 +1,5 @@
 import 'package:integration_test/integration_test_driver_extended.dart';
 
-import 'utils/grant_camera_permission.dart';
-
 Future<void> main() async {
-  await grantCameraPermission();
   await integrationDriver();
 }