feat(tests): tests coverage 67.2

test/features/create_diet/presentation/cubit/create_diet_cubit_test.dart

@@ -220,5 +220,120 @@ void main() {
       cubit.pasteCopiedDay(0);
       expect(cubit.state.dietData.dailySchedule?[0][0], isEmpty);
     });
+
+    test('getDietForPreview returns null when form is invalid', () async {
+      final result = await cubit.getDietForPreview();
+      expect(result, null);
+    });
+
+    test('createDiet returns validation error when form is invalid', () async {
+      final result = await cubit.createDiet();
+      expect(result, 'validation');
+      expect(cubit.state.isDietPublishing, false);
+    });
+
+    test('updateDiet returns error when form is invalid', () async {
+      final result = await cubit.updateDiet(1);
+      expect(result, 'error');
+    });
+
+    test('updateDiet handles error when image compression fails', () async {
+      cubit.setName('Test Diet');
+      cubit.setDetails('Test Description');
+      cubit.setDuration(0);
+      cubit.setDietState(DietState.active);
+      const portion = DailySchedule(
+        name: 'Apple',
+        portion: Portion.grams,
+        quantity: 100,
+        dailyNutrition: DailyNutrition(energy: 52.0, proteins: 0.3, fats: 0.2, carbohydrates: 14.0),
+        productNutritionalValueId: '1',
+      );
+      cubit.addPortion(dayIndex: 0, mealIndex: 0, portion: portion);
+      // Set image with non-existent file to trigger error in compression
+      final image = XFile('non_existent_image.jpg');
+      cubit.setImage(image);
+
+      final result = await cubit.updateDiet(1);
+
+      // Should return 'error' due to image compression failure
+      expect(result, 'error');
+    });
+
+    test('createDiet validates name length', () async {
+      cubit.setName('Te'); // Less than 3 characters
+      cubit.setDetails('Test Description');
+      cubit.setDuration(0);
+      cubit.setDietState(DietState.active);
+      const portion = DailySchedule(
+        name: 'Apple',
+        portion: Portion.grams,
+        quantity: 100,
+        dailyNutrition: DailyNutrition(energy: 52.0, proteins: 0.3, fats: 0.2, carbohydrates: 14.0),
+        productNutritionalValueId: '1',
+      );
+      cubit.addPortion(dayIndex: 0, mealIndex: 0, portion: portion);
+      final image = XFile('test_image.jpg');
+      cubit.setImage(image);
+
+      final result = await cubit.createDiet();
+
+      expect(result, 'validation');
+      expect(cubit.state.dietNameError, 'Длинна названия не может быть меньше 3 символов');
+    });
+
+    test('createDiet validates details length', () async {
+      cubit.setName('Test Diet');
+      cubit.setDetails('Te'); // Less than 3 characters
+      cubit.setDuration(0);
+      cubit.setDietState(DietState.active);
+      const portion = DailySchedule(
+        name: 'Apple',
+        portion: Portion.grams,
+        quantity: 100,
+        dailyNutrition: DailyNutrition(energy: 52.0, proteins: 0.3, fats: 0.2, carbohydrates: 14.0),
+        productNutritionalValueId: '1',
+      );
+      cubit.addPortion(dayIndex: 0, mealIndex: 0, portion: portion);
+      final image = XFile('test_image.jpg');
+      cubit.setImage(image);
+
+      final result = await cubit.createDiet();
+
+      expect(result, 'validation');
+      expect(cubit.state.dietDescriptionError, 'Длинна описания не может быть меньше 3 символов');
+    });
+
+    test('addPortion validates day when adding portion', () {
+      cubit.setDuration(0);
+      const portion = DailySchedule(
+        name: 'Apple',
+        portion: Portion.grams,
+        quantity: 100,
+        dailyNutrition: DailyNutrition(energy: 52.0, proteins: 0.3, fats: 0.2, carbohydrates: 14.0),
+        productNutritionalValueId: '1',
+      );
+
+      cubit.addPortion(dayIndex: 0, mealIndex: 0, portion: portion);
+
+      expect(cubit.state.dailyScheduleErrors[0], '');
+    });
+
+    test('removePortion removes portion from daily schedule', () {
+      cubit.setDuration(0);
+      const portion = DailySchedule(
+        name: 'Apple',
+        portion: Portion.grams,
+        quantity: 100,
+        dailyNutrition: DailyNutrition(energy: 52.0, proteins: 0.3, fats: 0.2, carbohydrates: 14.0),
+        productNutritionalValueId: '1',
+      );
+
+      cubit.addPortion(dayIndex: 0, mealIndex: 0, portion: portion);
+      expect(cubit.state.dietData.dailySchedule?[0][0].length, 1);
+
+      cubit.removePortion(day: 0, meal: 0, portionIndex: 0);
+      expect(cubit.state.dietData.dailySchedule?[0][0].length, 0);
+    });
   });
 }