test: add unit tests for SobProjectModal

test/sob_project_modal_test.dart

@@ -0,0 +1,123 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:opso/modals/sob_project_modal.dart';
+
+void main() {
+  group('SobProjectModal', () {
+    final tModal = SobProjectModal(
+      name: 'Alice Smith',
+      organization: 'Bitcoin Org',
+      description: 'Working on Bitcoin core',
+      mentor: 'Bob Jones',
+      university: 'MIT',
+      country: 'USA',
+      projects: [
+        'https://github.com/test/proj1',
+        'https://github.com/test/proj2',
+      ],
+      year: 2023,
+    );
+
+    test('constructor sets all fields correctly', () {
+      expect(tModal.name, 'Alice Smith');
+      expect(tModal.organization, 'Bitcoin Org');
+      expect(tModal.description, 'Working on Bitcoin core');
+      expect(tModal.mentor, 'Bob Jones');
+      expect(tModal.university, 'MIT');
+      expect(tModal.country, 'USA');
+      expect(tModal.projects, hasLength(2));
+      expect(tModal.year, 2023);
+    });
+
+    test('copyWith updates selected fields', () {
+      final updated = tModal.copyWith(name: 'Jane Doe', country: 'UK');
+      expect(updated.name, 'Jane Doe');
+      expect(updated.country, 'UK');
+      expect(updated.organization, tModal.organization);
+      expect(updated.mentor, tModal.mentor);
+    });
+
+    test('copyWith with no args returns equivalent object', () {
+      final copy = tModal.copyWith();
+      expect(copy.name, tModal.name);
+      expect(copy.year, tModal.year);
+    });
+
+    test('toMap returns correct map', () {
+      final map = tModal.toMap();
+      expect(map['name'], 'Alice Smith');
+      expect(map['organization'], 'Bitcoin Org');
+      expect(map['mentor'], 'Bob Jones');
+      expect(map['university'], 'MIT');
+      expect(map['country'], 'USA');
+      expect(map['year'], 2023);
+      expect(map['project_links'], hasLength(2));
+    });
+
+    test('fromMap constructs correctly with project_links', () {
+      final map = {
+        'name': 'Bob',
+        'organization': 'Ethereum',
+        'description': 'DeFi work',
+        'mentor': 'Charlie',
+        'university': 'Stanford',
+        'country': 'Canada',
+        'project_links': ['https://github.com/a', 'https://github.com/b'],
+        'year': 2022,
+      };
+      final modal = SobProjectModal.fromMap(map);
+      expect(modal.name, 'Bob');
+      expect(modal.projects, hasLength(2));
+      expect(modal.year, 2022);
+    });
+
+    test('fromMap handles missing project_links gracefully', () {
+      final map = {
+        'name': 'NoLinks',
+        'organization': 'Org',
+        'description': 'Desc',
+        'mentor': 'Mentor',
+        'university': 'Univ',
+        'country': 'Country',
+        'year': 2021,
+      };
+      final modal = SobProjectModal.fromMap(map);
+      expect(modal.projects, isEmpty);
+    });
+
+    test('fromMap handles null values with defaults', () {
+      final modal = SobProjectModal.fromMap({});
+      expect(modal.name, '');
+      expect(modal.year, 0);
+      expect(modal.projects, isEmpty);
+    });
+
+    test('equality operator works correctly', () {
+      final other = SobProjectModal(
+        name: 'Alice Smith',
+        organization: 'Bitcoin Org',
+        description: 'Working on Bitcoin core',
+        mentor: 'Bob Jones',
+        university: 'MIT',
+        country: 'USA',
+        projects: [
+          'https://github.com/test/proj1',
+          'https://github.com/test/proj2',
+        ],
+        year: 2023,
+      );
+      expect(tModal == other, isTrue);
+    });
+
+    test('inequality when fields differ', () {
+      final other = tModal.copyWith(name: 'Different');
+      expect(tModal == other, isFalse);
+    });
+
+    test('toString contains all key fields', () {
+      final str = tModal.toString();
+      expect(str, contains('Alice Smith'));
+      expect(str, contains('Bitcoin Org'));
+      expect(str, contains('MIT'));
+    });
+  });
+}