From d4f749a4651b2e3f590136ed789bc437a72cf993 Mon Sep 17 00:00:00 2001
From: Anto <antograssiot@free.fr>
Date: Thu, 21 Nov 2019 13:46:45 +0100
Subject: [PATCH] [Serializer] Fix MetadataAwareNameConverter usage with string
 group

fixes 34455
---
 .../Serializer/NameConverter/MetadataAwareNameConverter.php     | 2 +-
 .../Tests/NameConverter/MetadataAwareNameConverterTest.php      | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Serializer/NameConverter/MetadataAwareNameConverter.php b/src/Symfony/Component/Serializer/NameConverter/MetadataAwareNameConverter.php
index ea69a573632b4..7057e45134ee3 100644
--- a/src/Symfony/Component/Serializer/NameConverter/MetadataAwareNameConverter.php
+++ b/src/Symfony/Component/Serializer/NameConverter/MetadataAwareNameConverter.php
@@ -123,7 +123,7 @@ private function getCacheValueForAttributesMetadata(string $class, array $contex
             if (!$groups && ($context[AbstractNormalizer::GROUPS] ?? [])) {
                 continue;
             }
-            if ($groups && !array_intersect($groups, $context[AbstractNormalizer::GROUPS] ?? [])) {
+            if ($groups && !array_intersect($groups, (array) ($context[AbstractNormalizer::GROUPS] ?? []))) {
                 continue;
             }
 
diff --git a/src/Symfony/Component/Serializer/Tests/NameConverter/MetadataAwareNameConverterTest.php b/src/Symfony/Component/Serializer/Tests/NameConverter/MetadataAwareNameConverterTest.php
index d95c3ca91d2ee..540e59ed58aff 100644
--- a/src/Symfony/Component/Serializer/Tests/NameConverter/MetadataAwareNameConverterTest.php
+++ b/src/Symfony/Component/Serializer/Tests/NameConverter/MetadataAwareNameConverterTest.php
@@ -146,6 +146,8 @@ public function attributeAndContextProvider()
         return [
             ['buz', 'buz', ['groups' => ['a']]],
             ['buzForExport', 'buz', ['groups' => ['b']]],
+            ['buz', 'buz', ['groups' => 'a']],
+            ['buzForExport', 'buz', ['groups' => 'b']],
             ['buz', 'buz', ['groups' => ['c']]],
             ['buz', 'buz', []],
         ];