Merge branch '2.7' into 2.8

* 2.7:
  The exception should be thrown if an object doesn't implement Traversable AND doesn't implement Countable, not when it doesn't implement Traversable but DOES implement Countable
  [Form] fix violation mapper tests
  [HttpKernel] Prevent a fatal error when DebugHandlersListener is used with a kernel with no terminateWithException() method
  don't rely on deprecated YAML parser feature

src/Symfony/Component/Console/Question/Question.php

@@ -143,7 +143,7 @@ class Question
         }
 
         if (null !== $values && !is_array($values)) {
-            if (!$values instanceof \Traversable || $values instanceof \Countable) {
+            if (!$values instanceof \Traversable || !$values instanceof \Countable) {
                 throw new InvalidArgumentException('Autocompleter values can be either an array, `null` or an object implementing both `Countable` and `Traversable` interfaces.');
             }
         }

src/Symfony/Component/DependencyInjection/Tests/Dumper/YamlDumperTest.php

@@ -28,14 +28,14 @@ class YamlDumperTest extends \PHPUnit_Framework_TestCase
     {
         $dumper = new YamlDumper($container = new ContainerBuilder());
 
-        $this->assertEqualYamlStructure(self::$fixturesPath.'/yaml/services1.yml', $dumper->dump(), '->dump() dumps an empty container as an empty YAML file');
+        $this->assertEqualYamlStructure(file_get_contents(self::$fixturesPath.'/yaml/services1.yml'), $dumper->dump(), '->dump() dumps an empty container as an empty YAML file');
     }
 
     public function testAddParameters()
     {
         $container = include self::$fixturesPath.'/containers/container8.php';
         $dumper = new YamlDumper($container);
-        $this->assertEqualYamlStructure(self::$fixturesPath.'/yaml/services8.yml', $dumper->dump(), '->dump() dumps parameters');
+        $this->assertEqualYamlStructure(file_get_contents(self::$fixturesPath.'/yaml/services8.yml'), $dumper->dump(), '->dump() dumps parameters');
     }
 
     /**

src/Symfony/Component/Form/Tests/Extension/Validator/ViolationMapper/ViolationMapperTest.php

@@ -1552,12 +1552,14 @@ class ViolationMapperTest extends \PHPUnit_Framework_TestCase
         $parent->add($child2);
         $child2->add($grandChild);
 
+        $parent->submit(array());
+
         $this->mapper->mapViolation($violation, $parent);
 
         // The error occurred on the child of the second form with the same path
         $this->assertCount(0, $parent->getErrors(), $parent->getName().' should not have an error, but has one');
         $this->assertCount(0, $child1->getErrors(), $child1->getName().' should not have an error, but has one');
         $this->assertCount(0, $child2->getErrors(), $child2->getName().' should not have an error, but has one');
-        $this->assertEquals(array($this->getFormError()), $grandChild->getErrors(), $grandChild->getName().' should have an error, but has none');
+        $this->assertEquals(array($this->getFormError($violation, $grandChild)), iterator_to_array($grandChild->getErrors()), $grandChild->getName().' should have an error, but has none');
     }
 }

src/Symfony/Component/HttpKernel/EventListener/DebugHandlersListener.php

@@ -93,7 +93,9 @@ class DebugHandlersListener implements EventSubscriberInterface
         }
         if (!$this->exceptionHandler) {
             if ($event instanceof KernelEvent) {
-                $this->exceptionHandler = array($event->getKernel(), 'terminateWithException');
+                if (method_exists($event->getKernel(), 'terminateWithException')) {
+                    $this->exceptionHandler = array($event->getKernel(), 'terminateWithException');
+                }
             } elseif ($event instanceof ConsoleEvent && $app = $event->getCommand()->getApplication()) {
                 $output = $event->getOutput();
                 if ($output instanceof ConsoleOutputInterface) {

src/Symfony/Component/HttpKernel/Tests/EventListener/DebugHandlersListenerTest.php

@@ -21,7 +21,10 @@ use Symfony\Component\Console\Output\ConsoleOutput;
 use Symfony\Component\Debug\ErrorHandler;
 use Symfony\Component\Debug\ExceptionHandler;
 use Symfony\Component\EventDispatcher\EventDispatcher;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\Event\KernelEvent;
 use Symfony\Component\HttpKernel\EventListener\DebugHandlersListener;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
 use Symfony\Component\HttpKernel\KernelEvents;
 
 /**
@@ -62,6 +65,31 @@ class DebugHandlersListenerTest extends \PHPUnit_Framework_TestCase
         $this->assertSame(array($logger, LogLevel::INFO), $loggers[E_DEPRECATED]);
     }
 
+    public function testConfigureForHttpKernelWithNoTerminateWithException()
+    {
+        $listener = new DebugHandlersListener(null);
+        $eHandler = new ErrorHandler();
+        $event = new KernelEvent(
+            $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface'),
+            Request::create('/'),
+            HttpKernelInterface::MASTER_REQUEST
+        );
+
+        $exception = null;
+        $h = set_exception_handler(array($eHandler, 'handleException'));
+        try {
+            $listener->configure($event);
+        } catch (\Exception $exception) {
+        }
+        restore_exception_handler();
+
+        if (null !== $exception) {
+            throw $exception;
+        }
+
+        $this->assertNull($h);
+    }
+
     public function testConsoleEvent()
     {
         $dispatcher = new EventDispatcher();