Issue #2349879 by damiankloip: Fixed Remove unnecessary call to serializer >...

Issue #2349879 by damiankloip: Fixed Remove unnecessary call to serializer > normalize in XmlEncoder::encode.

core/modules/serialization/src/Encoder/XmlEncoder.php

@@ -9,7 +9,6 @@
 
 use Symfony\Component\Serializer\Encoder\EncoderInterface;
 use Symfony\Component\Serializer\Encoder\DecoderInterface;
-use Symfony\Component\Serializer\Encoder\SerializerAwareEncoder;
 use Symfony\Component\Serializer\Encoder\XmlEncoder as BaseXmlEncoder;
 
 /**
@@ -18,7 +17,7 @@
  * This acts as a wrapper class for Symfony's XmlEncoder so that it is not
  * implementing NormalizationAwareInterface, and can be normalized externally.
  */
-class XmlEncoder extends SerializerAwareEncoder implements EncoderInterface, DecoderInterface {
+class XmlEncoder implements EncoderInterface, DecoderInterface {
 
   /**
    * The formats that this Encoder supports.
@@ -61,8 +60,7 @@ public function setBaseEncoder($encoder) {
    * Implements \Symfony\Component\Serializer\Encoder\EncoderInterface::encode().
    */
   public function encode($data, $format, array $context = array()){
-    $normalized = $this->serializer->normalize($data, $format, $context);
-    return $this->getBaseEncoder()->encode($normalized, $format, $context);
+    return $this->getBaseEncoder()->encode($data, $format, $context);
   }
 
   /**

core/modules/serialization/tests/src/Unit/Encoder/XmlEncoderTest.php

@@ -61,17 +61,6 @@ public function testSupportsDecoding() {
    * Tests the encode() method.
    */
   public function testEncode() {
-    $serializer = $this->getMockBuilder('Symfony\Component\Serializer\Serializer')
-      ->disableOriginalConstructor()
-      ->setMethods(array('normalize'))
-      ->getMock();
-    $serializer->expects($this->once())
-      ->method('normalize')
-      ->with($this->testArray, 'test', array())
-      ->will($this->returnValue($this->testArray));
-
-    $this->encoder->setSerializer($serializer);
-
     $this->baseEncoder->expects($this->once())
       ->method('encode')
       ->with($this->testArray, 'test', array())