feat(dependencies): add rxdart package and improve string extension methods for better handling of empty strings and gender parsing

test/features/calendar/presentation/bloc/calendar_cubit_test.dart

@@ -0,0 +1,64 @@
+import 'package:eatvio_app/features/calendar/models/calendar_model.dart';
+import 'package:eatvio_app/features/calendar/presentation/bloc/calendar_cubit.dart';
+import 'package:eatvio_app/features/calendar/presentation/bloc/calendar_state.dart';
+import 'package:eatvio_app/features/calendar/repositories/calendar_repository.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mockito/annotations.dart';
+import 'package:mockito/mockito.dart';
+
+import 'calendar_cubit_test.mocks.dart';
+
+@GenerateNiceMocks([MockSpec<CalendarRepository>()])
+void main() {
+  group('CalendarCubit', () {
+    CalendarCubit? cubit;
+    late MockCalendarRepository mockRepository;
+
+    setUp(() {
+      mockRepository = MockCalendarRepository();
+    });
+
+    tearDown(() async {
+      if (cubit != null && !cubit!.isClosed) {
+        await cubit!.close();
+        cubit = null;
+      }
+    });
+
+    test('начальное состояние - loading', () {
+      cubit = CalendarCubit(calendarRepository: mockRepository);
+
+      expect(cubit!.state, isA<CalendarStateLoading>());
+    });
+
+    test('loadCalendarList - успешная загрузка календаря', () async {
+      cubit = CalendarCubit(calendarRepository: mockRepository);
+
+      const testCalendar = CalendarModel(
+        date: '2024-01-01',
+        isCurrentDayIncludedInTheChosenDietProgression: true,
+      );
+
+      when(mockRepository.getCalendar())
+          .thenAnswer((_) async => [testCalendar]);
+
+      await cubit!.loadCalendarList();
+
+      expect(cubit!.state, isA<CalendarStateLoaded>());
+      final loadedState = cubit!.state as CalendarStateLoaded;
+      expect(loadedState.calendarList.length, 1);
+    });
+
+    test('loadCalendarList - обработка ошибки', () async {
+      cubit = CalendarCubit(calendarRepository: mockRepository);
+
+      when(mockRepository.getCalendar())
+          .thenThrow(Exception('Ошибка загрузки'));
+
+      await cubit!.loadCalendarList();
+
+      expect(cubit!.state, isA<CalendarStateError>());
+    });
+  });
+}
+