work on test models part 1

test/model/forgot_password_response_test.dart

@@ -0,0 +1,68 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:tm_app/data/services/model/forgot_password_response/forgot_password_response_model.dart';
+
+void main() {
+  group('ForgotPasswordResponseModel Tests', () {
+    final mockJson = {
+      'success': true,
+      'message': 'Password reset link sent successfully',
+      'data': {
+        'message': 'Reset link has been emailed to you',
+        'success': true,
+      },
+      'error': {'message': null, 'code': null, 'details': null},
+      'meta': {'timestamp': 1759746927},
+    };
+
+    test('fromJson creates valid instance', () {
+      final response = ForgotPasswordResponseModel.fromJson(mockJson);
+
+      expect(response.success, isTrue);
+      expect(response.message, 'Password reset link sent successfully');
+
+      final data = response.data!;
+      expect(data.message, 'Reset link has been emailed to you');
+      expect(data.success, isTrue);
+
+      expect(response.error?.message, isNull);
+      expect(response.meta?['timestamp'], 1759746927);
+    });
+
+    test('toJson converts model back to JSON correctly', () {
+      final response = ForgotPasswordResponseModel.fromJson(mockJson);
+      final json = response.toJson();
+
+      expect(json['success'], true);
+      expect(json['message'], 'Password reset link sent successfully');
+
+      final data = response.data?.toJson() ?? {};
+      expect(data['message'], 'Reset link has been emailed to you');
+      expect(data['success'], true);
+
+      final meta = json['meta'] as Map<String, dynamic>?;
+      expect(meta?['timestamp'], 1759746927);
+    });
+
+    test('copyWith updates fields correctly', () {
+      final response = ForgotPasswordResponseModel.fromJson(mockJson);
+
+      final updated = response.copyWith(
+        message: 'Updated message',
+        success: false,
+        data: response.data?.copyWith(success: false),
+      );
+
+      expect(updated.message, 'Updated message');
+      expect(updated.success, isFalse);
+      expect(updated.data?.success, isFalse);
+    });
+
+    test('equality works as expected', () {
+      final res1 = ForgotPasswordResponseModel.fromJson(mockJson);
+      final res2 = ForgotPasswordResponseModel.fromJson(mockJson);
+
+      expect(res1, equals(res2));
+      expect(res1.hashCode, equals(res2.hashCode));
+    });
+  });
+}