symfony · nicolas-grekas · Oct 13, 2023 · Oct 13, 2023
diff --git a/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php b/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php
@@ -298,7 +298,7 @@ private function generateItems(array $keys, float $now, \Closure $f): \Generator
        }
    }

-    private function freeze($value, string $key): string|int|float|bool|array|null
+    private function freeze($value, string $key): string|int|float|bool|array|\UnitEnum|null
    {
        if (null === $value) {
            return 'N;';

diff --git a/src/Symfony/Component/Cache/Tests/Adapter/ArrayAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/ArrayAdapterTest.php
@@ -13,6 +13,7 @@

 use Psr\Cache\CacheItemPoolInterface;
 use Symfony\Component\Cache\Adapter\ArrayAdapter;
+use Symfony\Component\Cache\Tests\Fixtures\TestEnum;

 /**
 * @group time-sensitive
@@ -91,4 +92,14 @@ public function testMaxItems()
        $this->assertTrue($cache->hasItem('buz'));
        $this->assertTrue($cache->hasItem('foo'));
    }
+
+    public function testEnum()
+    {
+        $cache = new ArrayAdapter();
+        $item = $cache->getItem('foo');
+        $item->set(TestEnum::Foo);
+        $cache->save($item);
+
+        $this->assertSame(TestEnum::Foo, $cache->getItem('foo')->get());
+    }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Fixtures/TestEnum.php b/src/Symfony/Component/Cache/Tests/Fixtures/TestEnum.php
@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Cache\Tests\Fixtures;
+
+enum TestEnum
+{
+    case Foo;
+}