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

test/core/models/pagination_model_test.dart

@@ -0,0 +1,155 @@
+import 'package:eatvio_app/core/models/pagination_model.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('PaginationModel', () {
+    group('Links', () {
+      test('создает Links с правильными значениями', () {
+        const links = Links(
+          first: 'https://example.com?page=1',
+          last: 'https://example.com?page=10',
+          prev: null,
+          next: 'https://example.com?page=2',
+        );
+
+        expect(links.first, 'https://example.com?page=1');
+        expect(links.last, 'https://example.com?page=10');
+        expect(links.prev, isNull);
+        expect(links.next, 'https://example.com?page=2');
+      });
+
+      test('fromJson создает Links из JSON', () {
+        final json = {
+          'first': 'https://example.com?page=1',
+          'last': 'https://example.com?page=10',
+          'prev': null,
+          'next': 'https://example.com?page=2',
+        };
+
+        final links = Links.fromJson(json);
+
+        expect(links.first, 'https://example.com?page=1');
+        expect(links.last, 'https://example.com?page=10');
+        expect(links.prev, isNull);
+        expect(links.next, 'https://example.com?page=2');
+      });
+    });
+
+    group('Link', () {
+      test('создает Link с правильными значениями', () {
+        const link = Link(
+          url: 'https://example.com?page=2',
+          label: '2',
+          active: true,
+        );
+
+        expect(link.url, 'https://example.com?page=2');
+        expect(link.label, '2');
+        expect(link.active, isTrue);
+      });
+
+      test('создает Link с null значениями', () {
+        const link = Link(
+          url: null,
+          label: null,
+          active: null,
+        );
+
+        expect(link.url, isNull);
+        expect(link.label, isNull);
+        expect(link.active, isNull);
+      });
+
+      test('fromJson создает Link из JSON', () {
+        final json = {
+          'url': 'https://example.com?page=2',
+          'label': '2',
+          'active': true,
+        };
+
+        final link = Link.fromJson(json);
+
+        expect(link.url, 'https://example.com?page=2');
+        expect(link.label, '2');
+        expect(link.active, isTrue);
+      });
+    });
+
+    group('Meta', () {
+      test('создает Meta с правильными значениями', () {
+        const meta = Meta(
+          currentPage: 1,
+          from: 1,
+          lastPage: 10,
+          links: [],
+          path: 'https://example.com',
+          perPage: 20,
+          to: 20,
+          total: 200,
+          totalMinPrice: 100,
+          totalMaxPrice: 1000,
+        );
+
+        expect(meta.currentPage, 1);
+        expect(meta.from, 1);
+        expect(meta.lastPage, 10);
+        expect(meta.links, isEmpty);
+        expect(meta.path, 'https://example.com');
+        expect(meta.perPage, 20);
+        expect(meta.to, 20);
+        expect(meta.total, 200);
+        expect(meta.totalMinPrice, 100);
+        expect(meta.totalMaxPrice, 1000);
+      });
+
+      test('создает Meta с null значениями', () {
+        const meta = Meta(
+          currentPage: 1,
+          from: null,
+          lastPage: 1,
+          links: [],
+          path: null,
+          perPage: 20,
+          to: null,
+          total: 0,
+          totalMinPrice: null,
+          totalMaxPrice: null,
+        );
+
+        expect(meta.from, isNull);
+        expect(meta.path, isNull);
+        expect(meta.to, isNull);
+        expect(meta.totalMinPrice, isNull);
+        expect(meta.totalMaxPrice, isNull);
+      });
+
+      test('fromJson создает Meta из JSON', () {
+        final json = {
+          'current_page': 1,
+          'from': 1,
+          'last_page': 10,
+          'links': [],
+          'path': 'https://example.com',
+          'per_page': 20,
+          'to': 20,
+          'total': 200,
+          'total_min_price': 100,
+          'total_max_price': 1000,
+        };
+
+        final meta = Meta.fromJson(json);
+
+        expect(meta.currentPage, 1);
+        expect(meta.from, 1);
+        expect(meta.lastPage, 10);
+        expect(meta.path, 'https://example.com');
+        expect(meta.perPage, 20);
+        expect(meta.to, 20);
+        expect(meta.total, 200);
+        expect(meta.totalMinPrice, 100);
+        expect(meta.totalMaxPrice, 1000);
+      });
+    });
+  });
+}
+