test: add unit tests for SokdeProjectModal

test/sokde_project_modal_test.dart

@@ -0,0 +1,91 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:opso/modals/sokde_project_modal.dart';
+
+void main() {
+  group('SokdeProjectModal', () {
+    final tModal = SokdeProjectModal(
+      name: 'TestProject',
+      wiki: 'https://wiki.kde.org/test',
+      mentees: ['Alice', 'Bob'],
+      mentors: ['Charlie'],
+      year: '2023',
+    );
+
+    test('constructor sets all fields correctly', () {
+      expect(tModal.name, 'TestProject');
+      expect(tModal.wiki, 'https://wiki.kde.org/test');
+      expect(tModal.mentees, ['Alice', 'Bob']);
+      expect(tModal.mentors, ['Charlie']);
+      expect(tModal.year, '2023');
+    });
+
+    test('fromJson with list mentors and mentees', () {
+      final json = {
+        'title': 'JsonProject',
+        'link': 'https://wiki.kde.org/json',
+        'mentors': ['Mentor1', 'Mentor2'],
+        'mentees': ['Mentee1'],
+        'year': 2023,
+      };
+      final modal = SokdeProjectModal.fromJson(json);
+      expect(modal.name, 'JsonProject');
+      expect(modal.wiki, 'https://wiki.kde.org/json');
+      expect(modal.mentors, ['Mentor1', 'Mentor2']);
+      expect(modal.mentees, ['Mentee1']);
+      expect(modal.year, '2023');
+    });
+
+    test('fromJson with string mentors and mentees', () {
+      final json = {
+        'title': 'SingleMentorProject',
+        'link': 'https://wiki.kde.org/single',
+        'mentors': 'SingleMentor',
+        'mentees': 'SingleMentee',
+        'year': 2022,
+      };
+      final modal = SokdeProjectModal.fromJson(json);
+      expect(modal.mentors, ['SingleMentor']);
+      expect(modal.mentees, ['SingleMentee']);
+    });
+
+    test('fromJson converts year to string', () {
+      final json = {
+        'title': 'YearTest',
+        'link': 'url',
+        'mentors': <String>[],
+        'mentees': <String>[],
+        'year': 2024,
+      };
+      final modal = SokdeProjectModal.fromJson(json);
+      expect(modal.year, '2024');
+    });
+
+    test('toJson returns correct map', () {
+      final map = tModal.toJson();
+      expect(map['title'], 'TestProject');
+      expect(map['link'], 'https://wiki.kde.org/test');
+      expect(map['mentors'], ['Charlie']);
+      expect(map['mentees'], ['Alice', 'Bob']);
+      expect(map['year'], '2023');
+    });
+
+    test('toString contains key fields', () {
+      final str = tModal.toString();
+      expect(str, contains('TestProject'));
+      expect(str, contains('Alice'));
+      expect(str, contains('Charlie'));
+    });
+
+    test('supports empty mentors and mentees list', () {
+      final modal = SokdeProjectModal(
+        name: 'Empty',
+        wiki: 'url',
+        mentees: [],
+        mentors: [],
+        year: '2023',
+      );
+      expect(modal.mentors, isEmpty);
+      expect(modal.mentees, isEmpty);
+    });
+  });
+}