bug #26621 [Form] no type errors with invalid submitted data types (xabbuh)

This PR was merged into the 2.7 branch.

Discussion
----------

[Form] no type errors with invalid submitted data types

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #26557
| License       | MIT
| Doc PR        |

Commits
-------

4217cc1348 no type errors with invalid submitted data types

src/Symfony/Component/Form/Extension/Core/EventListener/FixUrlProtocolListener.php

@@ -36,7 +36,7 @@ class FixUrlProtocolListener implements EventSubscriberInterface
     {
         $data = $event->getData();
 
-        if ($this->defaultProtocol && $data && !preg_match('~^[\w+.-]+://~', $data)) {
+        if ($this->defaultProtocol && $data && is_string($data) && !preg_match('~^[\w+.-]+://~', $data)) {
             $event->setData($this->defaultProtocol.'://'.$data);
         }
     }

src/Symfony/Component/Form/Tests/Extension/Core/Type/UrlTypeTest.php

@@ -82,4 +82,12 @@ class UrlTypeTest extends TextTypeTest
             'default_protocol' => array(),
         ));
     }
+
+    public function testSubmitWithNonStringDataDoesNotBreakTheFixUrlProtocolListener()
+    {
+        $form = $this->factory->create(static::TESTED_TYPE);
+        $form->submit(array('domain.com', 'www.domain.com'));
+
+        $this->assertSame(array('domain.com', 'www.domain.com'), $form->getData());
+    }
 }