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

test/features/create_recipe/models/ingredient_test.dart

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+import 'package:eatvio_app/features/create_recipe/models/ingredient.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('Ingredient', () {
+    test('создает Ingredient с правильными значениями', () {
+      const ingredient = Ingredient(
+        name: 'Apple',
+        unit: 'gr',
+        portion: '100',
+        productId: 1,
+      );
+
+      expect(ingredient.name, 'Apple');
+      expect(ingredient.unit, 'gr');
+      expect(ingredient.portion, '100');
+      expect(ingredient.productId, 1);
+    });
+
+    test('fromJson создает Ingredient из JSON', () {
+      final json = {
+        'name': 'Apple',
+        'unit': 'gr',
+        'portion': '100',
+        'product_nutritional_id': 1,
+      };
+
+      final ingredient = Ingredient.fromJson(json);
+
+      expect(ingredient.name, 'Apple');
+      expect(ingredient.productId, 1);
+    });
+  });
+}
+

test/features/create_recipe/models/product_test.dart

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+import 'package:eatvio_app/features/create_recipe/models/product.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('Product', () {
+    test('создает Product с правильными значениями', () {
+      const product = Product(
+        id: 1,
+        name: 'Apple',
+      );
+
+      expect(product.id, 1);
+      expect(product.name, 'Apple');
+    });
+
+    test('fromJson создает Product из JSON', () {
+      final json = {
+        'id': 1,
+        'name': 'Apple',
+      };
+
+      final product = Product.fromJson(json);
+
+      expect(product.id, 1);
+      expect(product.name, 'Apple');
+    });
+  });
+}
+

test/features/create_recipe/models/recipe_model_test.dart

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+import 'package:eatvio_app/features/create_recipe/models/ingredient.dart';
+import 'package:eatvio_app/features/create_recipe/models/recipe_model.dart';
+import 'package:eatvio_app/features/create_recipe/models/step.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('RecipeModel', () {
+    test('создает RecipeModel с правильными значениями', () {
+      const ingredient = Ingredient(
+        name: 'Apple',
+        unit: 'gr',
+        portion: '100',
+        productId: 1,
+      );
+
+      const step = Step(
+        image: 'https://example.com/image.jpg',
+        description: 'Step description',
+      );
+
+      const model = RecipeModel(
+        ingredients: [ingredient],
+        steps: [step],
+        tags: ['breakfast'],
+        type: 'main',
+        state: 'draft',
+        title: 'Test Recipe',
+        description: 'Test description',
+        videoUrl: 'https://example.com/video.mp4',
+        image: 'https://example.com/image.jpg',
+        totalCookingTime: 30,
+        activeCookTime: 15,
+        servings: 4,
+        energyPerServing: 300,
+      );
+
+      expect(model.title, 'Test Recipe');
+      expect(model.ingredients?.length, 1);
+      expect(model.steps?.length, 1);
+      expect(model.tags?.length, 1);
+    });
+  });
+}
+

test/features/create_recipe/models/recipe_tag_model_test.dart

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+import 'package:eatvio_app/core/models/pagination_model.dart';
+import 'package:eatvio_app/features/create_recipe/models/recipe_tag_model.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('RecipeTag', () {
+    test('создает RecipeTag с правильными значениями', () {
+      final tag = RecipeTag(
+        id: 1,
+        name: 'Breakfast',
+        recipesCount: 10,
+        createdAt: DateTime(2024, 1, 1),
+        updatedAt: DateTime(2024, 1, 2),
+      );
+
+      expect(tag.id, 1);
+      expect(tag.name, 'Breakfast');
+      expect(tag.recipesCount, 10);
+    });
+  });
+
+  group('RecipeTagModel', () {
+    test('создает RecipeTagModel с правильными значениями', () {
+      final tag = RecipeTag(
+        id: 1,
+        name: 'Breakfast',
+        recipesCount: 10,
+        createdAt: DateTime(2024, 1, 1),
+        updatedAt: DateTime(2024, 1, 2),
+      );
+
+      final model = RecipeTagModel(
+        data: [tag],
+        links: const Links(
+          first: 'https://example.com?page=1',
+          last: 'https://example.com?page=1',
+          prev: null,
+          next: null,
+        ),
+        meta: const Meta(
+          currentPage: 1,
+          from: 1,
+          lastPage: 1,
+          links: [],
+          perPage: 10,
+          to: 1,
+          total: 1,
+        ),
+      );
+
+      expect(model.data.length, 1);
+      expect(model.data.first.name, 'Breakfast');
+    });
+  });
+}
+

test/features/create_recipe/models/step_test.dart

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+import 'package:eatvio_app/features/create_recipe/models/step.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('Step', () {
+    test('создает Step с правильными значениями', () {
+      const step = Step(
+        image: 'https://example.com/image.jpg',
+        description: 'Step description',
+      );
+
+      expect(step.image, 'https://example.com/image.jpg');
+      expect(step.description, 'Step description');
+    });
+
+    test('создает Step с null значениями', () {
+      const step = Step(
+        image: null,
+        description: null,
+      );
+
+      expect(step.image, isNull);
+      expect(step.description, isNull);
+    });
+  });
+}
+