chore: DocumentPropertiesDto tests

catalyst_voices/packages/internal/catalyst_voices_repositories/test/src/document/document_properties_dto_test.dart

@@ -0,0 +1,66 @@
+import 'package:catalyst_voices_models/catalyst_voices_models.dart';
+import 'package:catalyst_voices_repositories/src/dto/document/document_properties_dto.dart';
+import 'package:test/test.dart';
+
+void main() {
+  group(DocumentPropertiesDto, () {
+    test('getProperty returns correct value for valid path', () {
+      final json = {
+        'title': 'Test Document',
+        'content': {
+          'text': 'This is a test.',
+        },
+        'tags': ['test', 'flutter'],
+      };
+
+      final dto = DocumentPropertiesDto.fromJson(json);
+      final nodeId = DocumentNodeId.root.child('content').child('text');
+
+      expect(dto.getProperty(nodeId), 'This is a test.');
+    });
+
+    test('getProperty returns correct value for lists', () {
+      final json = {
+        'tags': ['test', 'flutter'],
+      };
+
+      final dto = DocumentPropertiesDto.fromJson(json);
+      final nodeId = DocumentNodeId.root.child('tags').child('1');
+
+      expect(dto.getProperty(nodeId), 'flutter');
+    });
+
+    test('getProperty returns null for invalid path', () {
+      final json = {
+        'title': 'Test Document',
+      };
+
+      final dto = DocumentPropertiesDto.fromJson(json);
+      final nodeId = DocumentNodeId.root.child('content').child('text');
+
+      expect(dto.getProperty(nodeId), isNull);
+    });
+
+    test('getProperty returns null for invalid list index', () {
+      final json = {
+        'tags': ['test', 'flutter'],
+      };
+
+      final dto = DocumentPropertiesDto.fromJson(json);
+      final nodeId = DocumentNodeId.root.child('tags').child('invalid_index');
+
+      expect(dto.getProperty(nodeId), isNull);
+    });
+
+    test('getProperty returns null for accessing non-collection', () {
+      final json = {
+        'title': 'Test Document',
+      };
+
+      final dto = DocumentPropertiesDto.fromJson(json);
+      final nodeId = DocumentNodeId.root.child('title').child('extra');
+
+      expect(dto.getProperty(nodeId), isNull);
+    });
+  });
+}