From 9a94fa930ed802f83edb17e24267882198a9f248 Mon Sep 17 00:00:00 2001
From: Anton Sapozhnikov <anton.sapozhnikov@einride.tech>
Date: Mon, 11 May 2026 18:02:22 +0200
Subject: [PATCH] feat: support localhost domains in user emails

---
 lib/core/services/input_validation_service.dart       | 2 +-
 test/core/services/input_validation_service_test.dart | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/core/services/input_validation_service.dart b/lib/core/services/input_validation_service.dart
index 21dc13bfa..22c3df16b 100644
--- a/lib/core/services/input_validation_service.dart
+++ b/lib/core/services/input_validation_service.dart
@@ -7,7 +7,7 @@ import '../../shared/theme/conduit_input_styles.dart';
 class InputValidationService {
   // Email regex pattern
   static final RegExp _emailRegex = RegExp(
-    r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$',
+    r'^[a-zA-Z0-9._%+-]+@([a-zA-Z0-9.-]+\.[a-zA-Z]{2,}|localhost)$',
   );
 
   // Strong password regex (min 8 chars, 1 upper, 1 lower, 1 number, 1 special)
diff --git a/test/core/services/input_validation_service_test.dart b/test/core/services/input_validation_service_test.dart
index 1280ef952..0afe129fd 100644
--- a/test/core/services/input_validation_service_test.dart
+++ b/test/core/services/input_validation_service_test.dart
@@ -16,6 +16,11 @@ void main() {
             .isNull();
       });
 
+      test('returns null for email with localhost domain', () {
+        check(InputValidationService.validateEmail('user@localhost'))
+            .isNull();
+      });
+
       test('returns error for invalid email without domain', () {
         check(InputValidationService.validateEmail('user@'))
             .isA<String>();