Merge branch '2.8' into 3.1

* 2.8:
  [Validator][GroupSequence] fixed GroupSequence validation ignores PropertyMetadata of parent classes
  [FrameworkBundle][Security] Remove useless mocks
  [DoctrineBridge] Enhance exception message in EntityUserProvider
  added friendly exception when constraint validator does not exist or it is not enabled
  remove duplicate instruction
  [FrameworkBundle] Remove TranslatorBagInterface check
  [FrameworkBundle] Remove duplicated code in RouterDebugCommand
  [Validator] fixed duplicate constraints with parent class interfaces
  SecurityBundle:BasicAuthenticationListener: removed a default argument on getting a header value

Author: nicolas-grekas

Command/RouterDebugCommand.php

@@ -78,10 +78,10 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $io = new SymfonyStyle($input, $output);
         $name = $input->getArgument('name');
         $helper = new DescriptorHelper();
+        $routes = $this->getContainer()->get('router')->getRouteCollection();
 
         if ($name) {
-            $route = $this->getContainer()->get('router')->getRouteCollection()->get($name);
-            if (!$route) {
+            if (!$route = $routes->get($name)) {
                 throw new \InvalidArgumentException(sprintf('The route "%s" does not exist.', $name));
             }
 
@@ -94,8 +94,6 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 'output' => $io,
             ));
         } else {
-            $routes = $this->getContainer()->get('router')->getRouteCollection();
-
             foreach ($routes as $route) {
                 $this->convertController($route);
             }

DependencyInjection/Compiler/LoggingTranslatorPass.php

@@ -26,11 +26,6 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        // skip if the symfony/translation version is lower than 2.6
-        if (!interface_exists('Symfony\Component\Translation\TranslatorBagInterface')) {
-            return;
-        }
-
         if ($container->hasParameter('translator.logging') && $container->getParameter('translator.logging')) {
             $translatorAlias = $container->getAlias('translator');
             $definition = $container->getDefinition((string) $translatorAlias);

Tests/Templating/DelegatingEngineTest.php

@@ -12,6 +12,7 @@
 namespace Symfony\Bundle\FrameworkBundle\Tests\Templating;
 
 use Symfony\Bundle\FrameworkBundle\Templating\DelegatingEngine;
+use Symfony\Component\HttpFoundation\Response;
 
 class DelegatingEngineTest extends \PHPUnit_Framework_TestCase
 {
@@ -60,7 +61,7 @@ public function testGetInvalidEngine()
 
     public function testRenderResponseWithFrameworkEngine()
     {
-        $response = $this->getMock('Symfony\Component\HttpFoundation\Response');
+        $response = new Response();
         $engine = $this->getFrameworkEngineMock('template.php', true);
         $engine->expects($this->once())
             ->method('renderResponse')

Tests/Validator/ConstraintValidatorFactoryTest.php

@@ -62,4 +62,19 @@ public function testGetInstanceReturnsService()
         $factory = new ConstraintValidatorFactory($container, array('validator_constraint_alias' => 'validator_constraint_service'));
         $this->assertSame($validator, $factory->getInstance($constraint));
     }
+
+    /**
+     * @expectedException \Symfony\Component\Validator\Exception\ValidatorException
+     */
+    public function testGetInstanceInvalidValidatorClass()
+    {
+        $constraint = $this->getMock('Symfony\\Component\\Validator\\Constraint');
+        $constraint
+            ->expects($this->once())
+            ->method('validatedBy')
+            ->will($this->returnValue('Fully\\Qualified\\ConstraintValidator\\Class\\Name'));
+
+        $factory = new ConstraintValidatorFactory(new Container());
+        $factory->getInstance($constraint);
+    }
 }

Validator/ConstraintValidatorFactory.php

@@ -15,6 +15,7 @@
 use Symfony\Component\Validator\Constraint;
 use Symfony\Component\Validator\ConstraintValidatorFactoryInterface;
 use Symfony\Component\Validator\ConstraintValidatorInterface;
+use Symfony\Component\Validator\Exception\ValidatorException;
 use Symfony\Component\Validator\Exception\UnexpectedTypeException;
 
 /**
@@ -61,13 +62,18 @@ public function __construct(ContainerInterface $container, array $validators = a
      *
      * @return ConstraintValidatorInterface A validator for the supplied constraint
      *
+     * @throws ValidatorException      When the validator class does not exist
      * @throws UnexpectedTypeException When the validator is not an instance of ConstraintValidatorInterface
      */
     public function getInstance(Constraint $constraint)
     {
         $name = $constraint->validatedBy();
 
         if (!isset($this->validators[$name])) {
+            if (!class_exists($name)) {
+                throw new ValidatorException(sprintf('Constraint validator "%s" does not exist or it is not enabled. Check the "validatedBy" method in your constraint class "%s".', $name, get_class($constraint)));
+            }
+
             $this->validators[$name] = new $name();
         } elseif (is_string($this->validators[$name])) {
             $this->validators[$name] = $this->container->get($this->validators[$name]);