[Cache] Fix NullAdapter must set taggable

a.dmitryuk · nicolas-grekas · commit 273f1b7cd9f1 · 2025-12-02T10:16:41.000+01:00
diff --git a/src/Symfony/Component/Cache/Adapter/NullAdapter.php b/src/Symfony/Component/Cache/Adapter/NullAdapter.php
@@ -28,6 +28,7 @@ public function __construct()
         self::$createCacheItem ??= \Closure::bind(
             static function ($key) {
                 $item = new CacheItem();
+                $item->isTaggable = true;
                 $item->key = $key;
                 $item->isHit = false;
 
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/NullAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/NullAdapterTest.php
@@ -138,6 +138,15 @@ public function testCommit()
         $this->assertTrue($this->createCachePool()->commit());
     }
 
+    public function testTaggable()
+    {
+        $this->expectNotToPerformAssertions();
+        $adapter = $this->createCachePool();
+        $item = $adapter->getItem('any_item');
+        // No error triggered 'Cache item "%s" comes from a non tag-aware pool: you cannot tag it.'
+        $item->tag(['tag1']);
+    }
+
     public function testInvalidateTags()
     {
         $adapter = $this->createCachePool();
