[Serializer] Fix that it will never reach DOMNode

TNAJanssen · fabpot · commit 38787ac7855e · 2020-08-04T08:15:26.000+02:00
diff --git a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
@@ -488,6 +488,9 @@ private function selectNodeType(\DOMNode $node, $val)
             $node->appendChild($child);
         } elseif ($val instanceof \Traversable) {
             $this->buildXml($node, $val);
+        } elseif ($val instanceof \DOMNode) {
+            $child = $this->dom->importNode($val, true);
+            $node->appendChild($child);
         } elseif (\is_object($val)) {
             if (null === $this->serializer) {
                 throw new BadMethodCallException(sprintf('The serializer needs to be set to allow "%s()" to be used with object data.', __METHOD__));
@@ -502,9 +505,6 @@ private function selectNodeType(\DOMNode $node, $val)
             return $this->appendText($node, $val);
         } elseif (\is_bool($val)) {
             return $this->appendText($node, (int) $val);
-        } elseif ($val instanceof \DOMNode) {
-            $child = $this->dom->importNode($val, true);
-            $node->appendChild($child);
         }
 
         return true;
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
@@ -662,6 +662,20 @@ public function testEncodeXmlWithBoolValue()
         $this->assertEquals($expectedXml, $actualXml);
     }
 
+    public function testEncodeXmlWithDomNodeValue()
+    {
+        $expectedXml = <<<'XML'
+<?xml version="1.0"?>
+<response><foo>bar</foo><bar>foo &amp; bar</bar></response>
+
+XML;
+        $document = new \DOMDocument();
+
+        $actualXml = $this->encoder->encode(['foo' => $document->createTextNode('bar'), 'bar' => $document->createTextNode('foo & bar')], 'xml');
+
+        $this->assertEquals($expectedXml, $actualXml);
+    }
+
     public function testEncodeXmlWithDateTimeObjectValue()
     {
         $xmlEncoder = $this->createXmlEncoderWithDateTimeNormalizer();
