merged branch davedevelopment/validator-2.3-test-fixes (PR #686)

This PR was merged into the master branch.

Discussion
----------

Validator 2.3 test fixes

Commits
-------

ac4c5a56 Pass constraints with keys for all symfony versions
87967798 Add alias method to conform with ConstraintValidatorInterface in 2.3

tests/Silex/Tests/Provider/ValidatorServiceProviderTest.php

@@ -87,7 +87,8 @@ class ValidatorServiceProviderTest extends \PHPUnit_Framework_TestCase
         ));
 
         $builder = $app['form.factory']->createBuilder('form', array(), array(
-            'validation_constraint' => $constraints,
+            'validation_constraint' => $constraints, // symfony/validator >=2.1,<2.3
+            'constraints' => $constraints, // symfony/validator ~2.3
             'csrf_protection'       => false,
         ));
 

tests/Silex/Tests/Provider/ValidatorServiceProviderTest/Constraint/CustomValidator.php

@@ -24,4 +24,9 @@ class CustomValidator extends ConstraintValidator
         // Validate...
         return true;
     }
+
+    public function validate($value, Constraint $constraint)
+    {
+        return $this->isValid($value, $constraint);
+    }
 }