diff --git a/src/Symfony/Component/Form/Test/Traits/ValidatorExtensionTrait.php b/src/Symfony/Component/Form/Test/Traits/ValidatorExtensionTrait.php
new file mode 100644
index 0000000000000..0724f697ba77a
--- /dev/null
+++ b/src/Symfony/Component/Form/Test/Traits/ValidatorExtensionTrait.php
@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Form\Test\Traits;
+
+use Symfony\Component\Form\Extension\Validator\ValidatorExtension;
+use Symfony\Component\Form\Test\TypeTestCase;
+use Symfony\Component\Validator\Mapping\ClassMetadata;
+use Symfony\Component\Validator\Validator\ValidatorInterface;
+
+trait ValidatorExtensionTrait
+{
+    protected $validator;
+
+    protected function getValidatorExtension()
+    {
+        if (!interface_exists(ValidatorInterface::class)) {
+            throw new \Exception('In order to use the "ValidatorExtensionTrait", the symfony/validator component must be installed');
+        }
+
+        if (!$this instanceof TypeTestCase) {
+            throw new \Exception(sprintf('The trait "ValidatorExtensionTrait" can only be added to a class that extends %s', TypeTestCase::class));
+        }
+
+        $this->validator = $this->getMockBuilder(ValidatorInterface::class)->getMock();
+        $metadata = $this->getMockBuilder(ClassMetadata::class)->disableOriginalConstructor()->getMock();
+        $this->validator->expects($this->any())->method('getMetadataFor')->will($this->returnValue($metadata));
+        $this->validator->expects($this->any())->method('validate')->will($this->returnValue(array()));
+
+        return new ValidatorExtension($this->validator);
+    }
+}
diff --git a/src/Symfony/Component/Form/Test/TypeTestCase.php b/src/Symfony/Component/Form/Test/TypeTestCase.php
index ff3f78292f5f0..346dc61648896 100644
--- a/src/Symfony/Component/Form/Test/TypeTestCase.php
+++ b/src/Symfony/Component/Form/Test/TypeTestCase.php
@@ -13,6 +13,7 @@
 
 use Symfony\Component\Form\FormBuilder;
 use Symfony\Component\EventDispatcher\EventDispatcher;
+use Symfony\Component\Form\Test\Traits\ValidatorExtensionTrait;
 
 abstract class TypeTestCase extends FormIntegrationTestCase
 {
@@ -34,6 +35,24 @@ protected function setUp()
         $this->builder = new FormBuilder(null, null, $this->dispatcher, $this->factory);
     }
 
+    protected function tearDown()
+    {
+        if (in_array(ValidatorExtensionTrait::class, class_uses($this))) {
+            $this->validator = null;
+        }
+    }
+
+    protected function getExtensions()
+    {
+        $extensions = array();
+
+        if (in_array(ValidatorExtensionTrait::class, class_uses($this))) {
+            $extensions[] = $this->getValidatorExtension();
+        }
+
+        return $extensions;
+    }
+
     public static function assertDateTimeEquals(\DateTime $expected, \DateTime $actual)
     {
         self::assertEquals($expected->format('c'), $actual->format('c'));
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/BaseValidatorExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/BaseValidatorExtensionTest.php
index f12b915b9a378..e83aaaa3491dc 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/BaseValidatorExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/BaseValidatorExtensionTest.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\Form\Tests\Extension\Validator\Type;
 
 use Symfony\Component\Form\Test\FormInterface;
+use Symfony\Component\Form\Test\TypeTestCase;
 use Symfony\Component\Validator\Constraints\GroupSequence;
 
 /**
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/FormTypeValidatorExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/FormTypeValidatorExtensionTest.php
index 2bf10bb36bce2..0dca9c476b56d 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/FormTypeValidatorExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/FormTypeValidatorExtensionTest.php
@@ -12,11 +12,14 @@
 namespace Symfony\Component\Form\Tests\Extension\Validator\Type;
 
 use Symfony\Component\Form\Extension\Validator\Type\FormTypeValidatorExtension;
+use Symfony\Component\Form\Test\Traits\ValidatorExtensionTrait;
 use Symfony\Component\Validator\Constraints\Valid;
 use Symfony\Component\Validator\ConstraintViolationList;
 
 class FormTypeValidatorExtensionTest extends BaseValidatorExtensionTest
 {
+    use ValidatorExtensionTrait;
+
     public function testSubmitValidatesData()
     {
         $builder = $this->factory->createBuilder(
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/SubmitTypeValidatorExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/SubmitTypeValidatorExtensionTest.php
index 48fc8de51d9c8..015b9582b5764 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/SubmitTypeValidatorExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/SubmitTypeValidatorExtensionTest.php
@@ -11,8 +11,12 @@
 
 namespace Symfony\Component\Form\Tests\Extension\Validator\Type;
 
+use Symfony\Component\Form\Test\Traits\ValidatorExtensionTrait;
+
 class SubmitTypeValidatorExtensionTest extends BaseValidatorExtensionTest
 {
+    use ValidatorExtensionTrait;
+
     protected function createForm(array $options = array())
     {
         return $this->factory->create('Symfony\Component\Form\Extension\Core\Type\SubmitType', null, $options);
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/TypeTestCase.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/TypeTestCase.php
deleted file mode 100644
index cb6000aa8fb81..0000000000000
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/TypeTestCase.php
+++ /dev/null
@@ -1,44 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Form\Tests\Extension\Validator\Type;
-
-use Symfony\Component\Form\Test\TypeTestCase as BaseTypeTestCase;
-use Symfony\Component\Form\Extension\Validator\ValidatorExtension;
-
-abstract class TypeTestCase extends BaseTypeTestCase
-{
-    protected $validator;
-
-    protected function setUp()
-    {
-        $this->validator = $this->getMockBuilder('Symfony\Component\Validator\Validator\ValidatorInterface')->getMock();
-        $metadata = $this->getMockBuilder('Symfony\Component\Validator\Mapping\ClassMetadata')->disableOriginalConstructor()->getMock();
-        $this->validator->expects($this->once())->method('getMetadataFor')->will($this->returnValue($metadata));
-        $this->validator->expects($this->any())->method('validate')->will($this->returnValue(array()));
-
-        parent::setUp();
-    }
-
-    protected function tearDown()
-    {
-        $this->validator = null;
-
-        parent::tearDown();
-    }
-
-    protected function getExtensions()
-    {
-        return array_merge(parent::getExtensions(), array(
-            new ValidatorExtension($this->validator),
-        ));
-    }
-}
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/UploadValidatorExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/UploadValidatorExtensionTest.php
index 8c0984f7e4e13..17792b67454f2 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/UploadValidatorExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/UploadValidatorExtensionTest.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\Form\Tests\Extension\Validator\Type;
 
 use Symfony\Component\Form\Extension\Validator\Type\UploadValidatorExtension;
+use Symfony\Component\Form\Test\TypeTestCase;
 use Symfony\Component\OptionsResolver\OptionsResolver;
 use Symfony\Component\OptionsResolver\Options;