Fixed tests by adding separate form type

Tests/Fixtures/Controller/TestController.php

@@ -67,7 +67,7 @@ class TestController
 
     /**
      * @ApiDoc(
-     *  input="Nelmio\ApiDocBundle\Tests\Fixtures\Form\TestType"
+     *  input="Nelmio\ApiDocBundle\Tests\Fixtures\Form\RequiredType"
      * )
      */
     public function requiredParametersAction()

Tests/Fixtures/Form/RequiredType.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Nelmio\ApiDocBundle\Tests\Fixtures\Form;
+
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\FormBuilderInterface;
+
+/**
+ * Class SimpleType
+ *
+ * @author Lucas van Lierop <lucas@vanlierop.org>
+ */
+class RequiredType extends AbstractType
+{
+    public function buildForm(FormBuilderInterface $builder, array $options)
+    {
+        $builder->add('required_field', 'text', array('required' => true));
+    }
+
+    /**
+     * Returns the name of this type.
+     *
+     * @return string The name of this type
+     */
+    public function getName()
+    {
+        return '';
+    }
+}

Tests/Fixtures/Form/TestType.php

@@ -27,7 +27,6 @@ class TestType extends AbstractType
             ->add('b')
             ->add($builder->create('c', 'checkbox'))
             ->add('d','text',array( 'data' => 'DefaultTest'))
-            ->add('required_field', 'text', array('required' => true))
         ;
     }