Merge branch '2.7' into 2.8

* 2.7:
  [2.7] Fix tests
  pass triggerDeprecationError arg to parent class
  remove default null value for asset version
  remove duplicated value
  [DependencyInjection] simplify the BC layer
  Change couple of occurences of a public setUp() method to protected

src/Symfony/Bridge/Twig/Tests/AppVariableTest.php

@@ -13,7 +13,7 @@ class AppVariableTest extends \PHPUnit_Framework_TestCase
      */
     protected $appVariable;
 
-    public function setUp()
+    protected function setUp()
     {
         $this->appVariable = new AppVariable();
     }

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php

@@ -600,7 +600,6 @@ class Configuration implements ConfigurationInterface
                                 ->fixXmlConfig('base_url')
                                 ->children()
                                     ->scalarNode('version')
-                                        ->defaultNull()
                                         ->beforeNormalization()
                                         ->ifTrue(function ($v) { return '' === $v; })
                                         ->then(function ($v) { return; })

src/Symfony/Component/ClassLoader/Tests/LegacyApcUniversalClassLoaderTest.php

@@ -21,7 +21,7 @@ class LegacyApcUniversalClassLoaderTest extends \PHPUnit_Framework_TestCase
     protected function setUp()
     {
         if (ini_get('apc.enabled') && ini_get('apc.enable_cli')) {
-            apcu_clear_cache('user');
+            apcu_clear_cache();
         } else {
             $this->markTestSkipped('APC is not enabled.');
         }
@@ -30,7 +30,7 @@ class LegacyApcUniversalClassLoaderTest extends \PHPUnit_Framework_TestCase
     protected function tearDown()
     {
         if (ini_get('apc.enabled') && ini_get('apc.enable_cli')) {
-            apcu_clear_cache('user');
+            apcu_clear_cache();
         }
     }
 

src/Symfony/Component/DependencyInjection/Compiler/ResolveReferencesToAliasesPass.php

@@ -44,10 +44,7 @@ class ResolveReferencesToAliasesPass implements CompilerPassInterface
             $definition->setMethodCalls($this->processArguments($definition->getMethodCalls()));
             $definition->setProperties($this->processArguments($definition->getProperties()));
             $definition->setFactory($this->processFactory($definition->getFactory()));
-
-            if (null !== $factoryService = $definition->getFactoryService(false)) {
-                $definition->setFactoryService($this->processFactoryService($factoryService));
-            }
+            $definition->setFactoryService($this->processFactoryService($definition->getFactoryService(false)), false);
         }
 
         foreach ($container->getAliases() as $id => $alias) {

src/Symfony/Component/DependencyInjection/Definition.php

@@ -200,9 +200,11 @@ class Definition
      *
      * @deprecated since version 2.6, to be removed in 3.0.
      */
-    public function setFactoryService($factoryService)
+    public function setFactoryService($factoryService, $triggerDeprecationError = true)
     {
-        @trigger_error(sprintf('%s(%s) is deprecated since version 2.6 and will be removed in 3.0. Use Definition::setFactory() instead.', __METHOD__, $factoryService), E_USER_DEPRECATED);
+        if ($triggerDeprecationError) {
+            @trigger_error(sprintf('%s(%s) is deprecated since version 2.6 and will be removed in 3.0. Use Definition::setFactory() instead.', __METHOD__, $factoryService), E_USER_DEPRECATED);
+        }
 
         $this->factoryService = $factoryService;
 

src/Symfony/Component/DependencyInjection/DefinitionDecorator.php

@@ -99,11 +99,11 @@ class DefinitionDecorator extends Definition
     /**
      * {@inheritdoc}
      */
-    public function setFactoryService($service)
+    public function setFactoryService($service, $triggerDeprecationError = true)
     {
         $this->changes['factory_service'] = true;
 
-        return parent::setFactoryService($service);
+        return parent::setFactoryService($service, $triggerDeprecationError);
     }
 
     /**

src/Symfony/Component/DependencyInjection/Tests/Compiler/ExtensionCompilerPassTest.php

@@ -21,7 +21,7 @@ class ExtensionCompilerPassTest extends \PHPUnit_Framework_TestCase
     private $container;
     private $pass;
 
-    public function setUp()
+    protected function setUp()
     {
         $this->container = $this->getMock('Symfony\Component\DependencyInjection\ContainerBuilder');
         $this->pass = new ExtensionCompilerPass();

src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php

@@ -416,7 +416,7 @@ class ChoiceType extends AbstractType
         $resolver->setAllowedTypes('choice_value', array('null', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
         $resolver->setAllowedTypes('choice_attr', array('null', 'array', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
         $resolver->setAllowedTypes('preferred_choices', array('array', '\Traversable', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
-        $resolver->setAllowedTypes('group_by', array('null', 'array', '\Traversable', 'string', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
+        $resolver->setAllowedTypes('group_by', array('null', 'array', '\Traversable', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
     }
 
     /**