Throw exception when "date_widget" option is not equal to "time_widget"

src/Symfony/Component/Form/Extension/Core/Type/DateTimeType.php

@@ -16,6 +16,7 @@ use Symfony\Component\Form\FormInterface;
 use Symfony\Component\Form\FormBuilder;
 use Symfony\Component\Form\FormView;
 use Symfony\Component\Form\ReversedTransformer;
+use Symfony\Component\Form\Exception\FormException;
 use Symfony\Component\Form\Extension\Core\DataTransformer\DataTransformerChain;
 use Symfony\Component\Form\Extension\Core\DataTransformer\DateTimeToArrayTransformer;
 use Symfony\Component\Form\Extension\Core\DataTransformer\DateTimeToStringTransformer;
@@ -37,6 +38,10 @@ class DateTimeType extends AbstractType
             $timeParts[] = 'second';
         }
 
+        if ($options['date_widget'] !== $options['time_widget']) {
+            throw new FormException(sprintf('Options "date_widget" and "time_widget" need to be identical. Used: "date_widget" = "%s" and "time_widget" = "%s".', $options['date_widget'] ?: 'choice', $options['time_widget'] ?: 'choice'));
+        }
+
         if ($options['widget'] === 'single_text') {
             $builder->appendClientTransformer(new DateTimeToStringTransformer($options['data_timezone'], $options['user_timezone'], 'Y-m-d H:i:s'));
         } else {

tests/Symfony/Tests/Component/Form/Extension/Core/Type/DateTimeTypeTest.php

@@ -175,4 +175,25 @@ class DateTimeTypeTest extends LocalizedTestCase
         $this->assertEquals('2010-06-02 03:04:00', $form->getData());
         $this->assertEquals('2010-06-02 03:04:00', $form->getClientData());
     }
+
+    /**
+     * @expectedException Symfony\Component\Form\Exception\FormException
+     */
+    public function testDifferentWidgets()
+    {
+        $form = $this->factory->create('datetime', null, array(
+            'date_widget' => 'single_text',
+            'time_widget' => 'choice',
+        ));
+    }
+
+    /**
+     * @expectedException Symfony\Component\Form\Exception\FormException
+     */
+    public function testDefinedOnlyOneWidget()
+    {
+        $form = $this->factory->create('datetime', null, array(
+            'date_widget' => 'single_text',
+        ));
+    }
 }