[Serializer] Unset attributes when creating child context

Author: dunglas

Normalizer/AbstractNormalizer.php

@@ -402,6 +402,8 @@ protected function createChildContext(array $parentContext, $attribute)
     {
         if (isset($parentContext[self::ATTRIBUTES][$attribute])) {
             $parentContext[self::ATTRIBUTES] = $parentContext[self::ATTRIBUTES][$attribute];
+        } else {
+            unset($parentContext[self::ATTRIBUTES]);
         }
 
         return $parentContext;

Tests/Normalizer/ObjectNormalizerTest.php

@@ -673,6 +673,16 @@ public function testAttributesContextNormalize()
             ),
             $serializer->normalize($objectDummy, null, $context)
         );
+
+        $context = array('attributes' => array('foo', 'baz', 'object'));
+        $this->assertEquals(
+            array(
+                'foo' => 'foo',
+                'baz' => true,
+                'object' => array('foo' => 'innerFoo', 'bar' => 'innerBar'),
+            ),
+            $serializer->normalize($objectDummy, null, $context)
+        );
     }
 
     public function testAttributesContextDenormalize()