diff --git a/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntityValidator.php b/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntityValidator.php
index 10ecbd88fb..023d82d339 100644
--- a/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntityValidator.php
+++ b/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntityValidator.php
@@ -41,7 +41,7 @@ class UniqueEntityValidator extends ConstraintValidator
      * @param object $entity
      * @param Constraint $constraint
      */
-    public function isValid($entity, Constraint $constraint)
+    public function validate($entity, Constraint $constraint)
     {
         if (!is_array($constraint->fields) && !is_string($constraint->fields)) {
             throw new UnexpectedTypeException($constraint->fields, 'array');
diff --git a/src/Symfony/Bundle/SecurityBundle/Validator/Constraint/UserPasswordValidator.php b/src/Symfony/Bundle/SecurityBundle/Validator/Constraint/UserPasswordValidator.php
index 355fb74a3e..a20d65dde2 100644
--- a/src/Symfony/Bundle/SecurityBundle/Validator/Constraint/UserPasswordValidator.php
+++ b/src/Symfony/Bundle/SecurityBundle/Validator/Constraint/UserPasswordValidator.php
@@ -29,7 +29,7 @@ class UserPasswordValidator extends ConstraintValidator
         $this->encoderFactory = $encoderFactory;
     }
 
-    public function isValid($password, Constraint $constraint)
+    public function validate($password, Constraint $constraint)
     {
         $user = $this->securityContext->getToken()->getUser();
 
diff --git a/src/Symfony/Component/Validator/ConstraintValidatorInterface.php b/src/Symfony/Component/Validator/ConstraintValidatorInterface.php
index 99a99ffb59..6b287c663a 100644
--- a/src/Symfony/Component/Validator/ConstraintValidatorInterface.php
+++ b/src/Symfony/Component/Validator/ConstraintValidatorInterface.php
@@ -33,5 +33,5 @@ interface ConstraintValidatorInterface
      *
      * @api
      */
-    function isValid($value, Constraint $constraint);
+    function validate($value, Constraint $constraint);
 }
diff --git a/src/Symfony/Component/Validator/Constraints/AllValidator.php b/src/Symfony/Component/Validator/Constraints/AllValidator.php
index fb9b65f6a9..d99d454ef0 100644
--- a/src/Symfony/Component/Validator/Constraints/AllValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/AllValidator.php
@@ -30,7 +30,7 @@ class AllValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/BlankValidator.php b/src/Symfony/Component/Validator/Constraints/BlankValidator.php
index b57de12a9b..df6ecf2bd8 100644
--- a/src/Symfony/Component/Validator/Constraints/BlankValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/BlankValidator.php
@@ -29,7 +29,7 @@ class BlankValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if ('' !== $value && null !== $value) {
             $this->context->addViolation($constraint->message, array('{{ value }}' => $value));
diff --git a/src/Symfony/Component/Validator/Constraints/CallbackValidator.php b/src/Symfony/Component/Validator/Constraints/CallbackValidator.php
index 1a11f35d42..5ff4555511 100644
--- a/src/Symfony/Component/Validator/Constraints/CallbackValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/CallbackValidator.php
@@ -33,7 +33,7 @@ class CallbackValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($object, Constraint $constraint)
+    public function validate($object, Constraint $constraint)
     {
         if (null === $object) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php b/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php
index 9976ae5ab4..2e3e18663e 100644
--- a/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php
@@ -35,7 +35,7 @@ class ChoiceValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (!$constraint->choices && !$constraint->callback) {
             throw new ConstraintDefinitionException('Either "choices" or "callback" must be specified on constraint Choice');
diff --git a/src/Symfony/Component/Validator/Constraints/CollectionValidator.php b/src/Symfony/Component/Validator/Constraints/CollectionValidator.php
index a80c07be44..66fecd5fcf 100644
--- a/src/Symfony/Component/Validator/Constraints/CollectionValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/CollectionValidator.php
@@ -32,7 +32,7 @@ class CollectionValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/CountryValidator.php b/src/Symfony/Component/Validator/Constraints/CountryValidator.php
index 75dbc3004b..c786ab74ba 100644
--- a/src/Symfony/Component/Validator/Constraints/CountryValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/CountryValidator.php
@@ -32,7 +32,7 @@ class CountryValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || '' === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/DateValidator.php b/src/Symfony/Component/Validator/Constraints/DateValidator.php
index 2a132ee99a..4888c99314 100644
--- a/src/Symfony/Component/Validator/Constraints/DateValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/DateValidator.php
@@ -32,7 +32,7 @@ class DateValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || '' === $value || $value instanceof \DateTime) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/EmailValidator.php b/src/Symfony/Component/Validator/Constraints/EmailValidator.php
index 4d2b1e0860..e1e713e74c 100644
--- a/src/Symfony/Component/Validator/Constraints/EmailValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/EmailValidator.php
@@ -30,7 +30,7 @@ class EmailValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || '' === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/FalseValidator.php b/src/Symfony/Component/Validator/Constraints/FalseValidator.php
index 57919b65f6..370394880d 100644
--- a/src/Symfony/Component/Validator/Constraints/FalseValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/FalseValidator.php
@@ -29,7 +29,7 @@ class FalseValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || false === $value || 0 === $value || '0' === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/FileValidator.php b/src/Symfony/Component/Validator/Constraints/FileValidator.php
index a766250b83..3a0f311dd0 100644
--- a/src/Symfony/Component/Validator/Constraints/FileValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/FileValidator.php
@@ -33,7 +33,7 @@ class FileValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || '' === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/ImageValidator.php b/src/Symfony/Component/Validator/Constraints/ImageValidator.php
index 5708cb30de..ced333cbb7 100644
--- a/src/Symfony/Component/Validator/Constraints/ImageValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/ImageValidator.php
@@ -22,15 +22,15 @@ use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
  */
 class ImageValidator extends FileValidator
 {
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         $violations = count($this->context->getViolations());
 
-        parent::isValid($value, $constraint);
+        parent::validate($value, $constraint);
 
-        $isValid = count($this->context->getViolations()) === $violations;
+        $failed = count($this->context->getViolations()) !== $violations;
 
-        if (!$isValid || null === $value || '' === $value) {
+        if ($failed || null === $value || '' === $value) {
             return;
         }
 
diff --git a/src/Symfony/Component/Validator/Constraints/IpValidator.php b/src/Symfony/Component/Validator/Constraints/IpValidator.php
index 4195d3b1db..2f1503d036 100644
--- a/src/Symfony/Component/Validator/Constraints/IpValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/IpValidator.php
@@ -33,7 +33,7 @@ class IpValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || '' === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/LanguageValidator.php b/src/Symfony/Component/Validator/Constraints/LanguageValidator.php
index 12337b9704..3d74097385 100644
--- a/src/Symfony/Component/Validator/Constraints/LanguageValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/LanguageValidator.php
@@ -32,7 +32,7 @@ class LanguageValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || '' === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/LocaleValidator.php b/src/Symfony/Component/Validator/Constraints/LocaleValidator.php
index 639fbaa51f..3310fc655e 100644
--- a/src/Symfony/Component/Validator/Constraints/LocaleValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/LocaleValidator.php
@@ -32,7 +32,7 @@ class LocaleValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || '' === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/MaxLengthValidator.php b/src/Symfony/Component/Validator/Constraints/MaxLengthValidator.php
index 5425086c07..cb040ee42d 100644
--- a/src/Symfony/Component/Validator/Constraints/MaxLengthValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/MaxLengthValidator.php
@@ -30,7 +30,7 @@ class MaxLengthValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || '' === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/MaxValidator.php b/src/Symfony/Component/Validator/Constraints/MaxValidator.php
index 67256ed405..90c9437b2f 100644
--- a/src/Symfony/Component/Validator/Constraints/MaxValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/MaxValidator.php
@@ -29,7 +29,7 @@ class MaxValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/MinLengthValidator.php b/src/Symfony/Component/Validator/Constraints/MinLengthValidator.php
index bc0da32fa0..5b3ea0c883 100644
--- a/src/Symfony/Component/Validator/Constraints/MinLengthValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/MinLengthValidator.php
@@ -30,7 +30,7 @@ class MinLengthValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || '' === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/MinValidator.php b/src/Symfony/Component/Validator/Constraints/MinValidator.php
index 1e059dd93b..4ffe43ab63 100644
--- a/src/Symfony/Component/Validator/Constraints/MinValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/MinValidator.php
@@ -29,7 +29,7 @@ class MinValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/NotBlankValidator.php b/src/Symfony/Component/Validator/Constraints/NotBlankValidator.php
index 524bf345d7..5ca3f11a96 100644
--- a/src/Symfony/Component/Validator/Constraints/NotBlankValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/NotBlankValidator.php
@@ -29,7 +29,7 @@ class NotBlankValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (false === $value || (empty($value) && '0' != $value)) {
             $this->context->addViolation($constraint->message);
diff --git a/src/Symfony/Component/Validator/Constraints/NotNullValidator.php b/src/Symfony/Component/Validator/Constraints/NotNullValidator.php
index 2a85c9f8e1..3015889529 100644
--- a/src/Symfony/Component/Validator/Constraints/NotNullValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/NotNullValidator.php
@@ -29,7 +29,7 @@ class NotNullValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value) {
             $this->context->addViolation($constraint->message);
diff --git a/src/Symfony/Component/Validator/Constraints/NullValidator.php b/src/Symfony/Component/Validator/Constraints/NullValidator.php
index 731b06c1f3..febe97f924 100644
--- a/src/Symfony/Component/Validator/Constraints/NullValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/NullValidator.php
@@ -29,7 +29,7 @@ class NullValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null !== $value) {
             $this->context->addViolation($constraint->message, array('{{ value }}' => $value));
diff --git a/src/Symfony/Component/Validator/Constraints/RegexValidator.php b/src/Symfony/Component/Validator/Constraints/RegexValidator.php
index 32cc37989b..283fe55958 100644
--- a/src/Symfony/Component/Validator/Constraints/RegexValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/RegexValidator.php
@@ -33,7 +33,7 @@ class RegexValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || '' === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/SizeLengthValidator.php b/src/Symfony/Component/Validator/Constraints/SizeLengthValidator.php
index 142f983117..04808f127b 100644
--- a/src/Symfony/Component/Validator/Constraints/SizeLengthValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/SizeLengthValidator.php
@@ -28,7 +28,7 @@ class SizeLengthValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || '' === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/SizeValidator.php b/src/Symfony/Component/Validator/Constraints/SizeValidator.php
index 0993657dd6..7ccbed737c 100644
--- a/src/Symfony/Component/Validator/Constraints/SizeValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/SizeValidator.php
@@ -31,7 +31,7 @@ class SizeValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/TimeValidator.php b/src/Symfony/Component/Validator/Constraints/TimeValidator.php
index 03a33ba0c6..22c34bd673 100644
--- a/src/Symfony/Component/Validator/Constraints/TimeValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/TimeValidator.php
@@ -32,7 +32,7 @@ class TimeValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || '' === $value || $value instanceof \DateTime) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/TrueValidator.php b/src/Symfony/Component/Validator/Constraints/TrueValidator.php
index 7a4ea25957..a40447425f 100644
--- a/src/Symfony/Component/Validator/Constraints/TrueValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/TrueValidator.php
@@ -29,7 +29,7 @@ class TrueValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value) {
             return true;
diff --git a/src/Symfony/Component/Validator/Constraints/TypeValidator.php b/src/Symfony/Component/Validator/Constraints/TypeValidator.php
index 527258463f..c21d784f9f 100644
--- a/src/Symfony/Component/Validator/Constraints/TypeValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/TypeValidator.php
@@ -29,7 +29,7 @@ class TypeValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/UrlValidator.php b/src/Symfony/Component/Validator/Constraints/UrlValidator.php
index 12b990d756..ca604f9897 100644
--- a/src/Symfony/Component/Validator/Constraints/UrlValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/UrlValidator.php
@@ -45,7 +45,7 @@ class UrlValidator extends ConstraintValidator
      *
      * @api
      */
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if (null === $value || '' === $value) {
             return;
diff --git a/src/Symfony/Component/Validator/GraphWalker.php b/src/Symfony/Component/Validator/GraphWalker.php
index ede0fa808d..ed7490cc9c 100644
--- a/src/Symfony/Component/Validator/GraphWalker.php
+++ b/src/Symfony/Component/Validator/GraphWalker.php
@@ -183,6 +183,6 @@ class GraphWalker
         );
 
         $validator->initialize($localContext);
-        $validator->isValid($value, $constraint);
+        $validator->validate($value, $constraint);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/ConstraintValidatorTest.php b/src/Symfony/Component/Validator/Tests/ConstraintValidatorTest.php
index b7a90d55c0..b9af1e9bea 100644
--- a/src/Symfony/Component/Validator/Tests/ConstraintValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/ConstraintValidatorTest.php
@@ -25,7 +25,7 @@ class ConstraintValidatorTest_Validator extends ConstraintValidator
         $this->params = $params;
     }
 
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         $this->setMessage($this->message, $this->params);
     }
@@ -44,7 +44,7 @@ class ConstraintValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation')
             ->with('error message', array('foo' => 'bar'));
 
-        $validator->isValid('bam', $constraint);
+        $validator->validate('bam', $constraint);
     }
 
     /**
@@ -55,6 +55,6 @@ class ConstraintValidatorTest extends \PHPUnit_Framework_TestCase
         $constraint = $this->getMock('Symfony\Component\Validator\Constraint', array(), array(), '', false);
         $validator = new ConstraintValidatorTest_Validator('error message', array('foo' => 'bar'));
 
-        $validator->isValid('bam', $constraint);
+        $validator->validate('bam', $constraint);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/AllValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/AllValidatorTest.php
index 8022ab1002..ec4e6c5241 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/AllValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/AllValidatorTest.php
@@ -54,7 +54,7 @@ class AllValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new All(new Min(4)));
+        $this->validator->validate(null, new All(new Min(4)));
     }
 
 
@@ -63,7 +63,7 @@ class AllValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testThrowsExceptionIfNotTraversable()
     {
-        $this->validator->isValid('foo.barbar', new All(new Min(4)));
+        $this->validator->validate('foo.barbar', new All(new Min(4)));
     }
 
     /**
@@ -84,7 +84,7 @@ class AllValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($array, new All($constraint));
+        $this->validator->validate($array, new All($constraint));
     }
 
     /**
@@ -110,7 +110,7 @@ class AllValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($array, new All($constraints));
+        $this->validator->validate($array, new All($constraints));
     }
 
     public function getValidArguments()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/BlankValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/BlankValidatorTest.php
index 502327544e..0fbe5e6fbb 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/BlankValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/BlankValidatorTest.php
@@ -37,7 +37,7 @@ class BlankValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Blank());
+        $this->validator->validate(null, new Blank());
     }
 
     public function testBlankIsValid()
@@ -45,7 +45,7 @@ class BlankValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new Blank());
+        $this->validator->validate('', new Blank());
     }
 
     /**
@@ -63,7 +63,7 @@ class BlankValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $value,
             ));
 
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getInvalidValues()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/CallbackValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/CallbackValidatorTest.php
index 3d1b419315..269d5a2c01 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/CallbackValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/CallbackValidatorTest.php
@@ -65,7 +65,7 @@ class CallbackValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Callback(array('foo')));
+        $this->validator->validate(null, new Callback(array('foo')));
     }
 
     public function testCallbackSingleMethod()
@@ -79,7 +79,7 @@ class CallbackValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => 'foobar',
             ));
 
-        $this->validator->isValid($object, $constraint);
+        $this->validator->validate($object, $constraint);
     }
 
     public function testCallbackSingleStaticMethod()
@@ -92,7 +92,7 @@ class CallbackValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => 'foobar',
             ));
 
-        $this->validator->isValid($object, new Callback(array(
+        $this->validator->validate($object, new Callback(array(
             array(__CLASS__.'_Class', 'validateStatic')
         )));
     }
@@ -113,7 +113,7 @@ class CallbackValidatorTest extends \PHPUnit_Framework_TestCase
             ));
 
 
-        $this->validator->isValid($object, new Callback(array(
+        $this->validator->validate($object, new Callback(array(
             'validateOne', 'validateTwo'
         )));
     }
@@ -125,7 +125,7 @@ class CallbackValidatorTest extends \PHPUnit_Framework_TestCase
     {
         $object = new CallbackValidatorTest_Object();
 
-        $this->validator->isValid($object, new Callback('foobar'));
+        $this->validator->validate($object, new Callback('foobar'));
     }
 
     /**
@@ -135,7 +135,7 @@ class CallbackValidatorTest extends \PHPUnit_Framework_TestCase
     {
         $object = new CallbackValidatorTest_Object();
 
-        $this->validator->isValid($object, new Callback(array('foobar')));
+        $this->validator->validate($object, new Callback(array('foobar')));
     }
 
     /**
@@ -145,7 +145,7 @@ class CallbackValidatorTest extends \PHPUnit_Framework_TestCase
     {
         $object = new CallbackValidatorTest_Object();
 
-        $this->validator->isValid($object, new Callback(array(array('foo', 'bar'))));
+        $this->validator->validate($object, new Callback(array(array('foo', 'bar'))));
     }
 
     public function testConstraintGetTargets()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/ChoiceValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/ChoiceValidatorTest.php
index 851e2ed21f..fd5b1dc0e9 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/ChoiceValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/ChoiceValidatorTest.php
@@ -58,7 +58,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
             'multiple' => true,
         ));
 
-        $this->validator->isValid('asdf', $constraint);
+        $this->validator->validate('asdf', $constraint);
     }
 
     public function testNullIsValid()
@@ -66,7 +66,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Choice(array('choices' => array('foo', 'bar'))));
+        $this->validator->validate(null, new Choice(array('choices' => array('foo', 'bar'))));
     }
 
     /**
@@ -74,7 +74,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testChoicesOrCallbackExpected()
     {
-        $this->validator->isValid('foobar', new Choice());
+        $this->validator->validate('foobar', new Choice());
     }
 
     /**
@@ -82,7 +82,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testValidCallbackExpected()
     {
-        $this->validator->isValid('foobar', new Choice(array('callback' => 'abcd')));
+        $this->validator->validate('foobar', new Choice(array('callback' => 'abcd')));
     }
 
     public function testValidChoiceArray()
@@ -92,7 +92,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('bar', $constraint);
+        $this->validator->validate('bar', $constraint);
     }
 
     public function testValidChoiceCallbackFunction()
@@ -102,7 +102,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('bar', $constraint);
+        $this->validator->validate('bar', $constraint);
     }
 
     public function testValidChoiceCallbackClosure()
@@ -114,7 +114,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('bar', $constraint);
+        $this->validator->validate('bar', $constraint);
     }
 
     public function testValidChoiceCallbackStaticMethod()
@@ -124,7 +124,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('bar', $constraint);
+        $this->validator->validate('bar', $constraint);
     }
 
     public function testValidChoiceCallbackContextMethod()
@@ -134,7 +134,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('bar', $constraint);
+        $this->validator->validate('bar', $constraint);
     }
 
     public function testMultipleChoices()
@@ -147,7 +147,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(array('baz', 'bar'), $constraint);
+        $this->validator->validate(array('baz', 'bar'), $constraint);
     }
 
     public function testInvalidChoice()
@@ -163,7 +163,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => 'baz',
             ), null, null);
 
-        $this->validator->isValid('baz', $constraint);
+        $this->validator->validate('baz', $constraint);
     }
 
     public function testInvalidChoiceMultiple()
@@ -180,7 +180,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => 'baz',
             ));
 
-        $this->validator->isValid(array('foo', 'baz'), $constraint);
+        $this->validator->validate(array('foo', 'baz'), $constraint);
     }
 
     public function testTooFewChoices()
@@ -198,7 +198,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ limit }}' => 2,
             ), null, 2);
 
-        $this->validator->isValid(array('foo'), $constraint);
+        $this->validator->validate(array('foo'), $constraint);
     }
 
     public function testTooManyChoices()
@@ -216,7 +216,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ limit }}' => 2,
             ), null, 2);
 
-        $this->validator->isValid(array('foo', 'bar', 'moo'), $constraint);
+        $this->validator->validate(array('foo', 'bar', 'moo'), $constraint);
     }
 
     public function testNonStrict()
@@ -229,8 +229,8 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('2', $constraint);
-        $this->validator->isValid(2, $constraint);
+        $this->validator->validate('2', $constraint);
+        $this->validator->validate(2, $constraint);
     }
 
     public function testStrictAllowsExactValue()
@@ -243,7 +243,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(2, $constraint);
+        $this->validator->validate(2, $constraint);
     }
 
     public function testStrictDisallowsDifferentType()
@@ -260,7 +260,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => '2',
             ));
 
-        $this->validator->isValid('2', $constraint);
+        $this->validator->validate('2', $constraint);
     }
 
     public function testNonStrictWithMultipleChoices()
@@ -274,7 +274,7 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(array('2', 3), $constraint);
+        $this->validator->validate(array('2', 3), $constraint);
     }
 
     public function testStrictWithMultipleChoices()
@@ -292,6 +292,6 @@ class ChoiceValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => '3',
             ));
 
-        $this->validator->isValid(array(2, '3'), $constraint);
+        $this->validator->validate(array(2, '3'), $constraint);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/CollectionValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/CollectionValidatorTest.php
index d2495004e1..7af7993686 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/CollectionValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/CollectionValidatorTest.php
@@ -58,7 +58,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolationAtSubPath');
 
-        $this->validator->isValid(null, new Collection(array('fields' => array(
+        $this->validator->validate(null, new Collection(array('fields' => array(
             'foo' => new Min(4),
         ))));
     }
@@ -70,7 +70,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolationAtSubPath');
 
-        $this->validator->isValid($data, new Collection(array(
+        $this->validator->validate($data, new Collection(array(
             'foo' => new Min(4),
         )));
     }
@@ -80,7 +80,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testThrowsExceptionIfNotTraversable()
     {
-        $this->validator->isValid('foobar', new Collection(array('fields' => array(
+        $this->validator->validate('foobar', new Collection(array('fields' => array(
             'foo' => new Min(4),
         ))));
     }
@@ -106,7 +106,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolationAtSubPath');
 
-        $this->validator->isValid($data, new Collection(array(
+        $this->validator->validate($data, new Collection(array(
             'fields' => array(
                 'foo' => $constraint,
                 'bar' => $constraint,
@@ -140,7 +140,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolationAtSubPath');
 
-        $this->validator->isValid($data, new Collection(array(
+        $this->validator->validate($data, new Collection(array(
             'fields' => array(
                 'foo' => $constraints,
                 'bar' => $constraints,
@@ -161,7 +161,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ field }}' => 'baz'
             ));
 
-        $this->validator->isValid($data, new Collection(array(
+        $this->validator->validate($data, new Collection(array(
             'fields' => array(
                 'foo' => new Min(4),
             ),
@@ -185,7 +185,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolationAtSubPath');
 
-        $this->validator->isValid($data, $constraint);
+        $this->validator->validate($data, $constraint);
     }
 
     public function testExtraFieldsAllowed()
@@ -205,7 +205,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolationAtSubPath');
 
-        $this->validator->isValid($data, $constraint);
+        $this->validator->validate($data, $constraint);
     }
 
     public function testMissingFieldsDisallowed()
@@ -225,7 +225,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ field }}' => 'foo',
             ));
 
-        $this->validator->isValid($data, $constraint);
+        $this->validator->validate($data, $constraint);
     }
 
     public function testMissingFieldsAllowed()
@@ -242,7 +242,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolationAtSubPath');
 
-        $this->validator->isValid($data, $constraint);
+        $this->validator->validate($data, $constraint);
     }
 
     public function testOptionalFieldPresent()
@@ -254,7 +254,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolationAtSubPath');
 
-        $this->validator->isValid($data, new Collection(array(
+        $this->validator->validate($data, new Collection(array(
             'foo' => new Optional(),
         )));
     }
@@ -266,7 +266,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolationAtSubPath');
 
-        $this->validator->isValid($data, new Collection(array(
+        $this->validator->validate($data, new Collection(array(
             'foo' => new Optional(),
         )));
     }
@@ -288,7 +288,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
 
         $data = $this->prepareTestData($array);
 
-        $this->validator->isValid($data, new Collection(array(
+        $this->validator->validate($data, new Collection(array(
             'foo' => new Optional($constraint),
         )));
     }
@@ -315,7 +315,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
 
         $data = $this->prepareTestData($array);
 
-        $this->validator->isValid($data, new Collection(array(
+        $this->validator->validate($data, new Collection(array(
             'foo' => new Optional($constraints),
         )));
     }
@@ -329,7 +329,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolationAtSubPath');
 
-        $this->validator->isValid($data, new Collection(array(
+        $this->validator->validate($data, new Collection(array(
             'foo' => new Required(),
         )));
     }
@@ -344,7 +344,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ field }}' => 'foo',
             ));
 
-        $this->validator->isValid($data, new Collection(array(
+        $this->validator->validate($data, new Collection(array(
             'fields' => array(
                  'foo' => new Required(),
              ),
@@ -369,7 +369,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
 
         $data = $this->prepareTestData($array);
 
-        $this->validator->isValid($data, new Collection(array(
+        $this->validator->validate($data, new Collection(array(
             'foo' => new Required($constraint),
         )));
     }
@@ -396,7 +396,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
 
         $data = $this->prepareTestData($array);
 
-        $this->validator->isValid($array, new Collection(array(
+        $this->validator->validate($array, new Collection(array(
             'foo' => new Required($constraints),
         )));
     }
@@ -407,7 +407,7 @@ abstract class CollectionValidatorTest extends \PHPUnit_Framework_TestCase
             'foo' => 3
         ));
 
-        $this->validator->isValid($value, new Collection(array(
+        $this->validator->validate($value, new Collection(array(
             'fields' => array(
                 'foo' => new Min(2),
             )
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/CountryValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/CountryValidatorTest.php
index 5345c698df..744f1247fd 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/CountryValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/CountryValidatorTest.php
@@ -39,7 +39,7 @@ class CountryValidatorTest extends LocalizedTestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Country());
+        $this->validator->validate(null, new Country());
     }
 
     public function testEmptyStringIsValid()
@@ -47,7 +47,7 @@ class CountryValidatorTest extends LocalizedTestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new Country());
+        $this->validator->validate('', new Country());
     }
 
     /**
@@ -55,7 +55,7 @@ class CountryValidatorTest extends LocalizedTestCase
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->isValid(new \stdClass(), new Country());
+        $this->validator->validate(new \stdClass(), new Country());
     }
 
     /**
@@ -70,7 +70,7 @@ class CountryValidatorTest extends LocalizedTestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($country, new Country());
+        $this->validator->validate($country, new Country());
     }
 
     public function getValidCountries()
@@ -101,7 +101,7 @@ class CountryValidatorTest extends LocalizedTestCase
                 '{{ value }}' => $country,
             ));
 
-        $this->validator->isValid($country, $constraint);
+        $this->validator->validate($country, $constraint);
     }
 
     public function getInvalidCountries()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/DateTimeValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/DateTimeValidatorTest.php
index 3153caa10e..3263d6820a 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/DateTimeValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/DateTimeValidatorTest.php
@@ -37,7 +37,7 @@ class DateTimeValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new DateTime());
+        $this->validator->validate(null, new DateTime());
     }
 
     public function testEmptyStringIsValid()
@@ -45,7 +45,7 @@ class DateTimeValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new DateTime());
+        $this->validator->validate('', new DateTime());
     }
 
     public function testDateTimeClassIsValid()
@@ -53,7 +53,7 @@ class DateTimeValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(new \DateTime(), new DateTime());
+        $this->validator->validate(new \DateTime(), new DateTime());
     }
 
     /**
@@ -61,7 +61,7 @@ class DateTimeValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->isValid(new \stdClass(), new DateTime());
+        $this->validator->validate(new \stdClass(), new DateTime());
     }
 
     /**
@@ -72,7 +72,7 @@ class DateTimeValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($dateTime, new DateTime());
+        $this->validator->validate($dateTime, new DateTime());
     }
 
     public function getValidDateTimes()
@@ -99,7 +99,7 @@ class DateTimeValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $dateTime,
             ));
 
-        $this->validator->isValid($dateTime, $constraint);
+        $this->validator->validate($dateTime, $constraint);
     }
 
     public function getInvalidDateTimes()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/DateValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/DateValidatorTest.php
index 5b34d461d8..007232c457 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/DateValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/DateValidatorTest.php
@@ -37,7 +37,7 @@ class DateValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Date());
+        $this->validator->validate(null, new Date());
     }
 
     public function testEmptyStringIsValid()
@@ -45,7 +45,7 @@ class DateValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new Date());
+        $this->validator->validate('', new Date());
     }
 
     public function testDateTimeClassIsValid()
@@ -53,7 +53,7 @@ class DateValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(new \DateTime(), new Date());
+        $this->validator->validate(new \DateTime(), new Date());
     }
 
     /**
@@ -61,7 +61,7 @@ class DateValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->isValid(new \stdClass(), new Date());
+        $this->validator->validate(new \stdClass(), new Date());
     }
 
     /**
@@ -72,7 +72,7 @@ class DateValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($date, new Date());
+        $this->validator->validate($date, new Date());
     }
 
     public function getValidDates()
@@ -99,7 +99,7 @@ class DateValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $date,
             ));
 
-        $this->validator->isValid($date, $constraint);
+        $this->validator->validate($date, $constraint);
     }
 
     public function getInvalidDates()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/EmailValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/EmailValidatorTest.php
index c5c8a97a93..f95c0899a9 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/EmailValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/EmailValidatorTest.php
@@ -37,7 +37,7 @@ class EmailValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Email());
+        $this->validator->validate(null, new Email());
     }
 
     public function testEmptyStringIsValid()
@@ -45,7 +45,7 @@ class EmailValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new Email());
+        $this->validator->validate('', new Email());
     }
 
     /**
@@ -53,7 +53,7 @@ class EmailValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->isValid(new \stdClass(), new Email());
+        $this->validator->validate(new \stdClass(), new Email());
     }
 
     /**
@@ -64,7 +64,7 @@ class EmailValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($email, new Email());
+        $this->validator->validate($email, new Email());
     }
 
     public function getValidEmails()
@@ -91,7 +91,7 @@ class EmailValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $email,
             ));
 
-        $this->validator->isValid($email, $constraint);
+        $this->validator->validate($email, $constraint);
     }
 
     public function getInvalidEmails()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/FalseValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/FalseValidatorTest.php
index 90f9f17868..1bc16c20bd 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/FalseValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/FalseValidatorTest.php
@@ -37,7 +37,7 @@ class FalseValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new False());
+        $this->validator->validate(null, new False());
     }
 
     public function testFalseIsValid()
@@ -45,7 +45,7 @@ class FalseValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(false, new False());
+        $this->validator->validate(false, new False());
     }
 
     public function testTrueIsInvalid()
@@ -58,6 +58,6 @@ class FalseValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation')
             ->with('myMessage', array());
 
-        $this->validator->isValid(true, $constraint);
+        $this->validator->validate(true, $constraint);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorPathTest.php b/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorPathTest.php
index 0ef9197a03..c4b93cdcd3 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorPathTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorPathTest.php
@@ -32,6 +32,6 @@ class FileValidatorPathTest extends FileValidatorTest
                 '{{ file }}' => 'foobar',
             ));
 
-        $this->validator->isValid('foobar', $constraint);
+        $this->validator->validate('foobar', $constraint);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorTest.php
index 2201c695a5..f7388dcebe 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorTest.php
@@ -51,7 +51,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new File());
+        $this->validator->validate(null, new File());
     }
 
     public function testEmptyStringIsValid()
@@ -59,7 +59,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new File());
+        $this->validator->validate('', new File());
     }
 
     /**
@@ -67,7 +67,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testExpectsStringCompatibleTypeOrFile()
     {
-        $this->validator->isValid(new \stdClass(), new File());
+        $this->validator->validate(new \stdClass(), new File());
     }
 
     public function testValidFile()
@@ -75,7 +75,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($this->path, new File());
+        $this->validator->validate($this->path, new File());
     }
 
     public function testValidUploadedfile()
@@ -84,7 +84,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation');
 
         $file = new UploadedFile($this->path, 'originalName');
-        $this->validator->isValid($file, new File());
+        $this->validator->validate($file, new File());
     }
 
     public function testTooLargeBytes()
@@ -104,7 +104,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ file }}'    => $this->path,
             ));
 
-        $this->validator->isValid($this->getFile($this->path), $constraint);
+        $this->validator->validate($this->getFile($this->path), $constraint);
     }
 
     public function testTooLargeKiloBytes()
@@ -124,7 +124,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ file }}'    => $this->path,
             ));
 
-        $this->validator->isValid($this->getFile($this->path), $constraint);
+        $this->validator->validate($this->getFile($this->path), $constraint);
     }
 
     public function testTooLargeMegaBytes()
@@ -144,7 +144,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ file }}'    => $this->path,
             ));
 
-        $this->validator->isValid($this->getFile($this->path), $constraint);
+        $this->validator->validate($this->getFile($this->path), $constraint);
     }
 
     /**
@@ -156,7 +156,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
             'maxSize' => '1abc',
         ));
 
-        $this->validator->isValid($this->path, $constraint);
+        $this->validator->validate($this->path, $constraint);
     }
 
     public function testValidMimeType()
@@ -184,7 +184,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
             'mimeTypes' => array('image/png', 'image/jpg'),
         ));
 
-        $this->validator->isValid($file, $constraint);
+        $this->validator->validate($file, $constraint);
     }
 
     public function testValidWildcardMimeType()
@@ -212,7 +212,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
             'mimeTypes' => array('image/*'),
         ));
 
-        $this->validator->isValid($file, $constraint);
+        $this->validator->validate($file, $constraint);
     }
 
     public function testInvalidMimeType()
@@ -246,7 +246,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ file }}'    => $this->path,
             ));
 
-        $this->validator->isValid($file, $constraint);
+        $this->validator->validate($file, $constraint);
     }
 
     public function testInvalidWildcardMimeType()
@@ -280,7 +280,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ file }}'    => $this->path,
             ));
 
-        $this->validator->isValid($file, $constraint);
+        $this->validator->validate($file, $constraint);
     }
 
     /**
@@ -298,7 +298,7 @@ abstract class FileValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation')
             ->with('myMessage', $params);
 
-        $this->validator->isValid($file, $constraint);
+        $this->validator->validate($file, $constraint);
 
     }
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/ImageValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/ImageValidatorTest.php
index 8029c2c41c..8854501624 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/ImageValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/ImageValidatorTest.php
@@ -34,7 +34,7 @@ class ImageValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Image());
+        $this->validator->validate(null, new Image());
     }
 
     public function testEmptyStringIsValid()
@@ -42,7 +42,7 @@ class ImageValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new Image());
+        $this->validator->validate('', new Image());
     }
 
     public function testValidImage()
@@ -54,7 +54,7 @@ class ImageValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($this->image, new Image());
+        $this->validator->validate($this->image, new Image());
     }
 
     public function testValidSize()
@@ -73,7 +73,7 @@ class ImageValidatorTest extends \PHPUnit_Framework_TestCase
             'maxHeight' => 2,
         ));
 
-        $this->validator->isValid($this->image, $constraint);
+        $this->validator->validate($this->image, $constraint);
     }
 
     public function testWidthTooSmall()
@@ -94,7 +94,7 @@ class ImageValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ min_width }}' => '3',
             ));
 
-        $this->validator->isValid($this->image, $constraint);
+        $this->validator->validate($this->image, $constraint);
     }
 
     public function testWidthTooBig()
@@ -115,7 +115,7 @@ class ImageValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ max_width }}' => '1',
             ));
 
-        $this->validator->isValid($this->image, $constraint);
+        $this->validator->validate($this->image, $constraint);
     }
 
     public function testHeightTooSmall()
@@ -136,7 +136,7 @@ class ImageValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ min_height }}' => '3',
             ));
 
-        $this->validator->isValid($this->image, $constraint);
+        $this->validator->validate($this->image, $constraint);
     }
 
     public function testHeightTooBig()
@@ -157,7 +157,7 @@ class ImageValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ max_height }}' => '1',
             ));
 
-        $this->validator->isValid($this->image, $constraint);
+        $this->validator->validate($this->image, $constraint);
     }
 
     /**
@@ -173,7 +173,7 @@ class ImageValidatorTest extends \PHPUnit_Framework_TestCase
             'minWidth' => '1abc',
         ));
 
-        $this->validator->isValid($this->image, $constraint);
+        $this->validator->validate($this->image, $constraint);
     }
 
     /**
@@ -189,7 +189,7 @@ class ImageValidatorTest extends \PHPUnit_Framework_TestCase
             'maxWidth' => '1abc',
         ));
 
-        $this->validator->isValid($this->image, $constraint);
+        $this->validator->validate($this->image, $constraint);
     }
 
     /**
@@ -205,7 +205,7 @@ class ImageValidatorTest extends \PHPUnit_Framework_TestCase
             'minHeight' => '1abc',
         ));
 
-        $this->validator->isValid($this->image, $constraint);
+        $this->validator->validate($this->image, $constraint);
     }
 
     /**
@@ -221,6 +221,6 @@ class ImageValidatorTest extends \PHPUnit_Framework_TestCase
             'maxHeight' => '1abc',
         ));
 
-        $this->validator->isValid($this->image, $constraint);
+        $this->validator->validate($this->image, $constraint);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/IpValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/IpValidatorTest.php
index 0ee24a8952..74293184c1 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/IpValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/IpValidatorTest.php
@@ -37,7 +37,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Ip());
+        $this->validator->validate(null, new Ip());
     }
 
     public function testEmptyStringIsValid()
@@ -45,7 +45,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new Ip());
+        $this->validator->validate('', new Ip());
     }
 
     /**
@@ -53,7 +53,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->isValid(new \stdClass(), new Ip());
+        $this->validator->validate(new \stdClass(), new Ip());
     }
 
     /**
@@ -74,7 +74,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($ip, new Ip(array(
+        $this->validator->validate($ip, new Ip(array(
             'version' => Ip::V4,
         )));
     }
@@ -101,7 +101,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($ip, new Ip(array(
+        $this->validator->validate($ip, new Ip(array(
             'version' => Ip::V6,
         )));
     }
@@ -139,7 +139,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($ip, new Ip(array(
+        $this->validator->validate($ip, new Ip(array(
             'version' => Ip::ALL,
         )));
     }
@@ -165,7 +165,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $ip,
             ));
 
-        $this->validator->isValid($ip, $constraint);
+        $this->validator->validate($ip, $constraint);
     }
 
     public function getInvalidIpsV4()
@@ -199,7 +199,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $ip,
             ));
 
-        $this->validator->isValid($ip, $constraint);
+        $this->validator->validate($ip, $constraint);
     }
 
     public function getInvalidPrivateIpsV4()
@@ -227,7 +227,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $ip,
             ));
 
-        $this->validator->isValid($ip, $constraint);
+        $this->validator->validate($ip, $constraint);
     }
 
     public function getInvalidReservedIpsV4()
@@ -255,7 +255,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $ip,
             ));
 
-        $this->validator->isValid($ip, $constraint);
+        $this->validator->validate($ip, $constraint);
     }
 
     public function getInvalidPublicIpsV4()
@@ -279,7 +279,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $ip,
             ));
 
-        $this->validator->isValid($ip, $constraint);
+        $this->validator->validate($ip, $constraint);
     }
 
     public function getInvalidIpsV6()
@@ -317,7 +317,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $ip,
             ));
 
-        $this->validator->isValid($ip, $constraint);
+        $this->validator->validate($ip, $constraint);
     }
 
     public function getInvalidPrivateIpsV6()
@@ -345,7 +345,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $ip,
             ));
 
-        $this->validator->isValid($ip, $constraint);
+        $this->validator->validate($ip, $constraint);
     }
 
     public function getInvalidReservedIpsV6()
@@ -372,7 +372,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $ip,
             ));
 
-        $this->validator->isValid($ip, $constraint);
+        $this->validator->validate($ip, $constraint);
     }
 
     public function getInvalidPublicIpsV6()
@@ -396,7 +396,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $ip,
             ));
 
-        $this->validator->isValid($ip, $constraint);
+        $this->validator->validate($ip, $constraint);
     }
 
     public function getInvalidIpsAll()
@@ -420,7 +420,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $ip,
             ));
 
-        $this->validator->isValid($ip, $constraint);
+        $this->validator->validate($ip, $constraint);
     }
 
     public function getInvalidPrivateIpsAll()
@@ -444,7 +444,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $ip,
             ));
 
-        $this->validator->isValid($ip, $constraint);
+        $this->validator->validate($ip, $constraint);
     }
 
     public function getInvalidReservedIpsAll()
@@ -468,7 +468,7 @@ class IpValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $ip,
             ));
 
-        $this->validator->isValid($ip, $constraint);
+        $this->validator->validate($ip, $constraint);
     }
 
     public function getInvalidPublicIpsAll()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/LanguageValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/LanguageValidatorTest.php
index 1c7438c51f..4f06afab91 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/LanguageValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/LanguageValidatorTest.php
@@ -39,7 +39,7 @@ class LanguageValidatorTest extends LocalizedTestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Language());
+        $this->validator->validate(null, new Language());
     }
 
     public function testEmptyStringIsValid()
@@ -47,7 +47,7 @@ class LanguageValidatorTest extends LocalizedTestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new Language());
+        $this->validator->validate('', new Language());
     }
 
     /**
@@ -55,7 +55,7 @@ class LanguageValidatorTest extends LocalizedTestCase
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->isValid(new \stdClass(), new Language());
+        $this->validator->validate(new \stdClass(), new Language());
     }
 
     /**
@@ -70,7 +70,7 @@ class LanguageValidatorTest extends LocalizedTestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($language, new Language());
+        $this->validator->validate($language, new Language());
     }
 
     public function getValidLanguages()
@@ -101,7 +101,7 @@ class LanguageValidatorTest extends LocalizedTestCase
                 '{{ value }}' => $language,
             ));
 
-        $this->validator->isValid($language, $constraint);
+        $this->validator->validate($language, $constraint);
     }
 
     public function getInvalidLanguages()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/LocaleValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/LocaleValidatorTest.php
index 5f150df193..bb5e944c3f 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/LocaleValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/LocaleValidatorTest.php
@@ -39,7 +39,7 @@ class LocaleValidatorTest extends LocalizedTestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Locale());
+        $this->validator->validate(null, new Locale());
     }
 
     public function testEmptyStringIsValid()
@@ -47,7 +47,7 @@ class LocaleValidatorTest extends LocalizedTestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new Locale());
+        $this->validator->validate('', new Locale());
     }
 
     /**
@@ -55,7 +55,7 @@ class LocaleValidatorTest extends LocalizedTestCase
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->isValid(new \stdClass(), new Locale());
+        $this->validator->validate(new \stdClass(), new Locale());
     }
 
     /**
@@ -70,7 +70,7 @@ class LocaleValidatorTest extends LocalizedTestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($locale, new Locale());
+        $this->validator->validate($locale, new Locale());
     }
 
     public function getValidLocales()
@@ -102,7 +102,7 @@ class LocaleValidatorTest extends LocalizedTestCase
                 '{{ value }}' => $locale,
             ));
 
-        $this->validator->isValid($locale, $constraint);
+        $this->validator->validate($locale, $constraint);
     }
 
     public function getInvalidLocales()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/MaxLengthValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/MaxLengthValidatorTest.php
index 5e61aded08..c68e3cc93f 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/MaxLengthValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/MaxLengthValidatorTest.php
@@ -37,7 +37,7 @@ class MaxLengthValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new MaxLength(array('limit' => 5)));
+        $this->validator->validate(null, new MaxLength(array('limit' => 5)));
     }
 
     public function testEmptyStringIsValid()
@@ -45,7 +45,7 @@ class MaxLengthValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new MaxLength(array('limit' => 5)));
+        $this->validator->validate('', new MaxLength(array('limit' => 5)));
     }
 
     /**
@@ -53,7 +53,7 @@ class MaxLengthValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->isValid(new \stdClass(), new MaxLength(array('limit' => 5)));
+        $this->validator->validate(new \stdClass(), new MaxLength(array('limit' => 5)));
     }
 
     /**
@@ -69,7 +69,7 @@ class MaxLengthValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation');
 
         $constraint = new MaxLength(array('limit' => 5));
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getValidValues()
@@ -103,7 +103,7 @@ class MaxLengthValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ limit }}' => 5,
             ), null, 5);
 
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getInvalidValues()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/MaxValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/MaxValidatorTest.php
index bbb5a4d574..f86b5109d8 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/MaxValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/MaxValidatorTest.php
@@ -37,7 +37,7 @@ class MaxValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Max(array('limit' => 10)));
+        $this->validator->validate(null, new Max(array('limit' => 10)));
     }
 
     /**
@@ -49,7 +49,7 @@ class MaxValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation');
 
         $constraint = new Max(array('limit' => 10));
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getValidValues()
@@ -80,7 +80,7 @@ class MaxValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ limit }}' => 10,
             ));
 
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getInvalidValues()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/MinLengthValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/MinLengthValidatorTest.php
index 4488b6ddef..a3c0d618f8 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/MinLengthValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/MinLengthValidatorTest.php
@@ -37,7 +37,7 @@ class MinLengthValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new MinLength(array('limit' => 6)));
+        $this->validator->validate(null, new MinLength(array('limit' => 6)));
     }
 
     public function testEmptyStringIsValid()
@@ -45,7 +45,7 @@ class MinLengthValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new MinLength(array('limit' => 6)));
+        $this->validator->validate('', new MinLength(array('limit' => 6)));
     }
 
     /**
@@ -53,7 +53,7 @@ class MinLengthValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->isValid(new \stdClass(), new MinLength(array('limit' => 5)));
+        $this->validator->validate(new \stdClass(), new MinLength(array('limit' => 5)));
     }
 
     /**
@@ -69,7 +69,7 @@ class MinLengthValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation');
 
         $constraint = new MinLength(array('limit' => 6));
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getValidValues()
@@ -103,7 +103,7 @@ class MinLengthValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ limit }}' => 5,
             ), null, 5);
 
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getInvalidValues()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/MinValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/MinValidatorTest.php
index 4bcb831d9e..fb103ce983 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/MinValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/MinValidatorTest.php
@@ -31,7 +31,7 @@ class MinValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Min(array('limit' => 10)));
+        $this->validator->validate(null, new Min(array('limit' => 10)));
     }
 
     /**
@@ -43,7 +43,7 @@ class MinValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation');
 
         $constraint = new Min(array('limit' => 10));
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getValidValues()
@@ -74,7 +74,7 @@ class MinValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ limit }}' => 10,
             ));
 
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getInvalidValues()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/NotBlankValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/NotBlankValidatorTest.php
index ce9febbc40..0e4401e4c4 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/NotBlankValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/NotBlankValidatorTest.php
@@ -40,7 +40,7 @@ class NotBlankValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($date, new NotBlank());
+        $this->validator->validate($date, new NotBlank());
     }
 
     public function getValidValues()
@@ -64,7 +64,7 @@ class NotBlankValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation')
             ->with('myMessage');
 
-        $this->validator->isValid(null, $constraint);
+        $this->validator->validate(null, $constraint);
     }
 
     public function testBlankIsInvalid()
@@ -77,7 +77,7 @@ class NotBlankValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation')
             ->with('myMessage');
 
-        $this->validator->isValid('', $constraint);
+        $this->validator->validate('', $constraint);
     }
 
     public function testFalseIsInvalid()
@@ -90,7 +90,7 @@ class NotBlankValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation')
             ->with('myMessage');
 
-        $this->validator->isValid(false, $constraint);
+        $this->validator->validate(false, $constraint);
     }
 
     public function testEmptyArrayIsInvalid()
@@ -103,7 +103,7 @@ class NotBlankValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation')
             ->with('myMessage');
 
-        $this->validator->isValid(array(), $constraint);
+        $this->validator->validate(array(), $constraint);
     }
 }
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/NotNullValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/NotNullValidatorTest.php
index 03c79b63ec..96f74a1ba0 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/NotNullValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/NotNullValidatorTest.php
@@ -40,7 +40,7 @@ class NotNullValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($value, new NotNull());
+        $this->validator->validate($value, new NotNull());
     }
 
     public function getValidValues()
@@ -64,6 +64,6 @@ class NotNullValidatorTest extends \PHPUnit_Framework_TestCase
             ->with('myMessage', array(
             ));
 
-        $this->validator->isValid(null, $constraint);
+        $this->validator->validate(null, $constraint);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/NullValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/NullValidatorTest.php
index f098f3d62a..4466aa17c9 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/NullValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/NullValidatorTest.php
@@ -37,7 +37,7 @@ class NullValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Null());
+        $this->validator->validate(null, new Null());
     }
 
     /**
@@ -55,7 +55,7 @@ class NullValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $value,
             ));
 
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getInvalidValues()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/RegexValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/RegexValidatorTest.php
index fcc27dc62e..755f488577 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/RegexValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/RegexValidatorTest.php
@@ -37,7 +37,7 @@ class RegexValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Regex(array('pattern' => '/^[0-9]+$/')));
+        $this->validator->validate(null, new Regex(array('pattern' => '/^[0-9]+$/')));
     }
 
     public function testEmptyStringIsValid()
@@ -45,7 +45,7 @@ class RegexValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new Regex(array('pattern' => '/^[0-9]+$/')));
+        $this->validator->validate('', new Regex(array('pattern' => '/^[0-9]+$/')));
     }
 
     /**
@@ -53,7 +53,7 @@ class RegexValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->isValid(new \stdClass(), new Regex(array('pattern' => '/^[0-9]+$/')));
+        $this->validator->validate(new \stdClass(), new Regex(array('pattern' => '/^[0-9]+$/')));
     }
 
     /**
@@ -65,7 +65,7 @@ class RegexValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation');
 
         $constraint = new Regex(array('pattern' => '/^[0-9]+$/'));
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getValidValues()
@@ -94,7 +94,7 @@ class RegexValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $value,
             ));
 
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getInvalidValues()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/SizeLengthValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/SizeLengthValidatorTest.php
index b8c2d20440..eddf9475cf 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/SizeLengthValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/SizeLengthValidatorTest.php
@@ -37,7 +37,7 @@ class SizeLengthValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new SizeLength(array('min' => 6, 'max' => 10)));
+        $this->validator->validate(null, new SizeLength(array('min' => 6, 'max' => 10)));
     }
 
     public function testEmptyStringIsValid()
@@ -45,7 +45,7 @@ class SizeLengthValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new SizeLength(array('min' => 6, 'max' => 10)));
+        $this->validator->validate('', new SizeLength(array('min' => 6, 'max' => 10)));
     }
 
     /**
@@ -53,7 +53,7 @@ class SizeLengthValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->isValid(new \stdClass(), new SizeLength(array('min' => 6, 'max' => 10)));
+        $this->validator->validate(new \stdClass(), new SizeLength(array('min' => 6, 'max' => 10)));
     }
 
     /**
@@ -69,7 +69,7 @@ class SizeLengthValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation');
 
         $constraint = new SizeLength(array('min' => 6, 'max' => 10));
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getValidValues()
@@ -99,7 +99,7 @@ class SizeLengthValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation');
 
         $constraint = new SizeLength(array('min' => 6, 'max' => 10));
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getInvalidValues()
@@ -131,7 +131,7 @@ class SizeLengthValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ limit }}' => 5,
             ), null, 5);
 
-        $this->validator->isValid('1234', $constraint);
+        $this->validator->validate('1234', $constraint);
     }
 
     public function testMaxMessageIsSet()
@@ -149,7 +149,7 @@ class SizeLengthValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ limit }}' => 10,
             ), null, 10);
 
-        $this->validator->isValid('12345678901', $constraint);
+        $this->validator->validate('12345678901', $constraint);
     }
 
     public function testExactMessageIsSet()
@@ -167,6 +167,6 @@ class SizeLengthValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ limit }}' => 5,
             ), null, 5);
 
-        $this->validator->isValid('1234', $constraint);
+        $this->validator->validate('1234', $constraint);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/SizeValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/SizeValidatorTest.php
index 0b6099d47c..5cda166f48 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/SizeValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/SizeValidatorTest.php
@@ -31,7 +31,7 @@ class SizeValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Size(array('min' => 10, 'max' => 20)));
+        $this->validator->validate(null, new Size(array('min' => 10, 'max' => 20)));
     }
 
     /**
@@ -43,7 +43,7 @@ class SizeValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation');
 
         $constraint = new Size(array('min' => 10, 'max' => 20));
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getValidValues()
@@ -69,7 +69,7 @@ class SizeValidatorTest extends \PHPUnit_Framework_TestCase
             ->method('addViolation');
 
         $constraint = new Size(array('min' => 10, 'max' => 20));
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getInvalidValues()
@@ -98,7 +98,7 @@ class SizeValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ limit }}' => 10,
             ));
 
-        $this->validator->isValid(9, $constraint);
+        $this->validator->validate(9, $constraint);
     }
 
     public function testMaxMessageIsSet()
@@ -116,6 +116,6 @@ class SizeValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ limit }}' => 20,
             ));
 
-        $this->validator->isValid(21, $constraint);
+        $this->validator->validate(21, $constraint);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/TimeValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/TimeValidatorTest.php
index 878368bef1..285ab254be 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/TimeValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/TimeValidatorTest.php
@@ -37,7 +37,7 @@ class TimeValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Time());
+        $this->validator->validate(null, new Time());
     }
 
     public function testEmptyStringIsValid()
@@ -45,7 +45,7 @@ class TimeValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new Time());
+        $this->validator->validate('', new Time());
     }
 
     public function testDateTimeClassIsValid()
@@ -53,7 +53,7 @@ class TimeValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(new \DateTime(), new Time());
+        $this->validator->validate(new \DateTime(), new Time());
     }
 
     /**
@@ -61,7 +61,7 @@ class TimeValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->isValid(new \stdClass(), new Time());
+        $this->validator->validate(new \stdClass(), new Time());
     }
 
     /**
@@ -72,7 +72,7 @@ class TimeValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($time, new Time());
+        $this->validator->validate($time, new Time());
     }
 
     public function getValidTimes()
@@ -99,7 +99,7 @@ class TimeValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $time,
             ));
 
-        $this->validator->isValid($time, $constraint);
+        $this->validator->validate($time, $constraint);
     }
 
     public function getInvalidTimes()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/TrueValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/TrueValidatorTest.php
index 8c1d7dddcf..25901793a0 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/TrueValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/TrueValidatorTest.php
@@ -37,7 +37,7 @@ class TrueValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new True());
+        $this->validator->validate(null, new True());
     }
 
     public function testTrueIsValid()
@@ -45,7 +45,7 @@ class TrueValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(true, new True());
+        $this->validator->validate(true, new True());
     }
 
     public function testFalseIsInvalid()
@@ -59,6 +59,6 @@ class TrueValidatorTest extends \PHPUnit_Framework_TestCase
             ->with('myMessage', array(
             ));
 
-        $this->validator->isValid(false, $constraint);
+        $this->validator->validate(false, $constraint);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/TypeValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/TypeValidatorTest.php
index 3dd4ed9e11..4b68b25252 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/TypeValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/TypeValidatorTest.php
@@ -39,7 +39,7 @@ class TypeValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Type(array('type' => 'integer')));
+        $this->validator->validate(null, new Type(array('type' => 'integer')));
     }
 
     public function testEmptyIsValidIfString()
@@ -47,12 +47,12 @@ class TypeValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new Type(array('type' => 'string')));
+        $this->validator->validate('', new Type(array('type' => 'string')));
     }
 
     public function testEmptyIsInvalidIfNoString()
     {
-        $this->validator->isValid('', new Type(array('type' => 'integer')));
+        $this->validator->validate('', new Type(array('type' => 'integer')));
     }
 
     /**
@@ -65,7 +65,7 @@ class TypeValidatorTest extends \PHPUnit_Framework_TestCase
 
         $constraint = new Type(array('type' => $type));
 
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getValidValues()
@@ -122,7 +122,7 @@ class TypeValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ type }}' => $type,
             ));
 
-        $this->validator->isValid($value, $constraint);
+        $this->validator->validate($value, $constraint);
     }
 
     public function getInvalidValues()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
index e9b05192cc..bace8069b8 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
@@ -37,7 +37,7 @@ class UrlValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid(null, new Url());
+        $this->validator->validate(null, new Url());
     }
 
     public function testEmptyStringIsValid()
@@ -45,7 +45,7 @@ class UrlValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid('', new Url());
+        $this->validator->validate('', new Url());
     }
 
     /**
@@ -53,7 +53,7 @@ class UrlValidatorTest extends \PHPUnit_Framework_TestCase
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->isValid(new \stdClass(), new Url());
+        $this->validator->validate(new \stdClass(), new Url());
     }
 
     /**
@@ -64,7 +64,7 @@ class UrlValidatorTest extends \PHPUnit_Framework_TestCase
         $this->context->expects($this->never())
             ->method('addViolation');
 
-        $this->validator->isValid($url, new Url());
+        $this->validator->validate($url, new Url());
     }
 
     public function getValidUrls()
@@ -119,7 +119,7 @@ class UrlValidatorTest extends \PHPUnit_Framework_TestCase
                 '{{ value }}' => $url,
             ));
 
-        $this->validator->isValid($url, $constraint);
+        $this->validator->validate($url, $constraint);
     }
 
     public function getInvalidUrls()
@@ -154,7 +154,7 @@ class UrlValidatorTest extends \PHPUnit_Framework_TestCase
             'protocols' => array('ftp', 'file', 'git')
         ));
 
-        $this->validator->isValid($url, $constraint);
+        $this->validator->validate($url, $constraint);
     }
 
     public function getValidCustomUrls()
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintAValidator.php b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintAValidator.php
index 890f447ab6..702a904d51 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintAValidator.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintAValidator.php
@@ -26,7 +26,7 @@ class ConstraintAValidator extends ConstraintValidator
         self::$passedContext = $context;
     }
 
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         if ('VALID' != $value) {
             $this->context->addViolation('message', array('param' => 'value'));
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/FailingConstraintValidator.php b/src/Symfony/Component/Validator/Tests/Fixtures/FailingConstraintValidator.php
index 73d7a61bb3..854e80f35d 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/FailingConstraintValidator.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/FailingConstraintValidator.php
@@ -16,7 +16,7 @@ use Symfony\Component\Validator\ConstraintValidator;
 
 class FailingConstraintValidator extends ConstraintValidator
 {
-    public function isValid($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint)
     {
         $this->context->addViolation($constraint->message, array());