[Serializer] fixed bc-break with cdata-section nodes

Author: fieg

Encoder/XmlEncoder.php

@@ -305,7 +305,7 @@ private function parseXmlValue(\DOMNode $node)
             return $node->nodeValue;
         }
 
-        if (1 === $node->childNodes->length && XML_TEXT_NODE === $node->firstChild->nodeType) {
+        if (1 === $node->childNodes->length && in_array($node->firstChild->nodeType, array(XML_TEXT_NODE, XML_CDATA_SECTION_NODE))) {
             return $node->firstChild->nodeValue;
         }
 

Tests/Encoder/XmlEncoderTest.php

@@ -228,6 +228,18 @@ public function testDecode()
         $this->assertEquals(get_object_vars($obj), $this->encoder->decode($source, 'xml'));
     }
 
+    public function testDecodeCdataWrapping()
+    {
+        $expected = array(
+            'firstname' => 'Paul <or Me>',
+        );
+
+        $xml = '<?xml version="1.0"?>'."\n".
+            '<response><firstname><![CDATA[Paul <or Me>]]></firstname></response>'."\n";
+
+        $this->assertEquals($expected, $this->encoder->decode($xml, 'xml'));
+    }
+
     public function testDecodeScalarWithAttribute()
     {
         $source = '<?xml version="1.0"?>'."\n".