feat(tests): added 2 e2e tests

integration_test/auth_screen/auth_login_test.dart

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+import 'package:eatvio_app/app_keys.dart';
+import 'package:eatvio_app/core/app_initializer.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+import 'package:eatvio_app/main.dart' as app;
+
+import '../common_cases/skip_welcome_screen.dart';
+
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+
+  setUpAll(() async {
+    await AppInitializer.initialize(buildType: AppBuildType.tests);
+  });
+
+  testWidgets('Signs in successfully with valid credentials', (WidgetTester tester) async {
+    await tester.pumpWidget(const app.MyApp());
+    await tester.pumpAndSettle(const Duration(seconds: 3));
+    await skipWelcomeScreen(tester);
+    final emailFieldFinder = find.byKey(AppKeys.emailTextFieldAuthScreen);
+    final passwordFieldFinder = find.byKey(AppKeys.passwordTextFieldAuthScreen);
+    final signInButtonFinder = find.byKey(AppKeys.signInButtonAuthScreen);
+
+    expect(emailFieldFinder, findsOneWidget, reason: 'Email text field should be found.');
+    expect(passwordFieldFinder, findsOneWidget, reason: 'Password text field should be found.');
+    expect(signInButtonFinder, findsOneWidget, reason: 'Sign In button should be found.');
+
+    await tester.enterText(emailFieldFinder, 'reshetnik.n+user3@gmail.com');
+    await tester.enterText(passwordFieldFinder, '1234567890');
+    await tester.pumpAndSettle();
+
+    await tester.tap(signInButtonFinder);
+
+    await tester.pumpAndSettle(const Duration(seconds: 3));
+
+    expect(signInButtonFinder, findsNothing, reason: 'Sign-in button should not be visible after successful login and navigation.');
+  });
+}

integration_test/auth_screen/auth_logo_button_test.dart

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+import 'package:eatvio_app/app_keys.dart';
+import 'package:eatvio_app/core/app_initializer.dart';
+import 'package:eatvio_app/features/dev_tools/presentation/dev_tools_screen.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+import 'package:eatvio_app/main.dart' as app;
+
+import '../common_cases/skip_welcome_screen.dart';
+
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+
+  setUpAll(() async {
+    await AppInitializer.initialize(buildType: AppBuildType.tests);
+  });
+
+  testWidgets('tapping logo 7 times opens dev tools', (WidgetTester tester) async {
+    await tester.pumpWidget(const app.MyApp());
+    await tester.pumpAndSettle(const Duration(seconds: 3));
+    await skipWelcomeScreen(tester);
+    final logoButtonFinder = find.byKey(AppKeys.hiddenLogoButtonAuthScreen);
+    expect(logoButtonFinder, findsOneWidget, reason: 'The logo GestureDetector should be found in auth screen');
+
+    for (int i = 0; i < 7; i++) {
+      await tester.tap(logoButtonFinder);
+      await tester.pump(const Duration(milliseconds: 50));
+    }
+    await tester.pumpAndSettle();
+
+    expect(find.byType(DevToolsScreen), findsOneWidget, reason: 'DevToolsScreen should be visible after tapping the logo 7 times.');
+  });
+}

integration_test/common_cases/skip_welcome_screen.dart

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+import 'package:eatvio_app/app_keys.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+Future<void> skipWelcomeScreen(WidgetTester tester) async {
+  final welcomeScreenButtonFinder = find.byKey(AppKeys.welcomeScreenButton);
+  await tester.tap(welcomeScreenButtonFinder);
+  await tester.pumpAndSettle();
+}