From 270147b04fbf54a688f4532c4d552d4d2041ee22 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?K=C3=A9vin=20Dunglas?= <dunglas@gmail.com>
Date: Mon, 19 Feb 2018 17:05:09 +0100
Subject: [PATCH] [PropertyInfo] ReflectionExtractor: give a chance to other
 extractors if no properties

---
 .../Extractor/ReflectionExtractor.php         |  2 +-
 .../Extractors/ReflectionExtractorTest.php    |  2 ++
 .../Tests/Fixtures/NoProperties.php           | 21 +++++++++++++++++++
 3 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 src/Symfony/Component/PropertyInfo/Tests/Fixtures/NoProperties.php

diff --git a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
index 3ec1d8d6ea..b29d78d070 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
@@ -76,7 +76,7 @@ class ReflectionExtractor implements PropertyListExtractorInterface, PropertyTyp
             $properties[$propertyName] = $propertyName;
         }
 
-        return array_values($properties);
+        return $properties ? array_values($properties) : null;
     }
 
     /**
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractors/ReflectionExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractors/ReflectionExtractorTest.php
index cc2ecbe6f5..2828878ce6 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractors/ReflectionExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractors/ReflectionExtractorTest.php
@@ -57,6 +57,8 @@ class ReflectionExtractorTest extends TestCase
             ),
             $this->extractor->getProperties('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy')
         );
+
+        $this->assertNull($this->extractor->getProperties('Symfony\Component\PropertyInfo\Tests\Fixtures\NoProperties'));
     }
 
     /**
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/NoProperties.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/NoProperties.php
new file mode 100644
index 0000000000..177bbe4df0
--- /dev/null
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/NoProperties.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace Symfony\Component\PropertyInfo\Tests\Fixtures;
+
+/*
+ * 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\PropertyInfo\Tests\Fixtures;
+
+/**
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+class NoProperties
+{
+}