Merge branch '5.4' into 6.2

* 5.4:
  [Mime] regenerate test certificates
  Fix tests
  [Validator] Fix support of Enum to `ConstraintValidator::formatValue`

Author: nicolas-grekas

ConstraintValidator.php

@@ -88,6 +88,10 @@ protected function formatValue(mixed $value, int $format = 0): string
             return $value->format('Y-m-d H:i:s');
         }
 
+        if ($value instanceof \UnitEnum) {
+            return $value->name;
+        }
+
         if (\is_object($value)) {
             if (($format & self::OBJECT_TO_STRING) && $value instanceof \Stringable) {
                 return $value->__toString();

Tests/ConstraintValidatorTest.php

@@ -14,6 +14,7 @@
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Validator\Constraint;
 use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Tests\Fixtures\TestEnum;
 
 class ConstraintValidatorTest extends TestCase
 {
@@ -48,6 +49,10 @@ public static function formatValueProvider()
             [class_exists(\IntlDateFormatter::class) ? 'Jan 1, 1970, 3:00 PM' : '1970-01-01 15:00:00', (new \DateTimeImmutable('1970-01-01T23:00:00'))->setTimezone(new \DateTimeZone('America/New_York')), ConstraintValidator::PRETTY_DATE],
         ];
 
+        if (\PHP_VERSION_ID >= 80100) {
+            $data[] = ['FirstCase', TestEnum::FirstCase];
+        }
+
         date_default_timezone_set($defaultTimezone);
 
         return $data;

Tests/Fixtures/TestEnum.php

@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Validator\Tests\Fixtures;
+
+enum TestEnum
+{
+    case FirstCase;
+    case SecondCase;
+}