[HttpFoundation] Allow to get all the mime types associated to a format in the Request

src/Symfony/Component/HttpFoundation/Request.php

@@ -1310,6 +1310,22 @@ class Request
         return isset(static::$formats[$format]) ? static::$formats[$format][0] : null;
     }
 
+    /**
+     * Gets the mime types associated with the format.
+     *
+     * @param string $format The format
+     *
+     * @return array The associated mime types
+     */
+    public static function getMimeTypes($format)
+    {
+        if (null === static::$formats) {
+            static::initializeFormats();
+        }
+
+        return isset(static::$formats[$format]) ? static::$formats[$format] : array();
+    }
+
     /**
      * Gets the format associated with the mime type.
      *

src/Symfony/Component/HttpFoundation/Tests/RequestTest.php

@@ -330,6 +330,23 @@ class RequestTest extends \PHPUnit_Framework_TestCase
         }
     }
 
+    /**
+     * @dataProvider getFormatToMimeTypeMapProvider
+     */
+    public function testGetMimeTypesFromFormat($format, $mimeTypes)
+    {
+        if (null !== $format) {
+            $this->assertEquals($mimeTypes, Request::getMimeTypes($format));
+        }
+    }
+
+    public function testGetMimeTypesFromInexistentFormat()
+    {
+        $request = new Request();
+        $this->assertNull($request->getMimeType('foo'));
+        $this->assertEquals(array(), Request::getMimeTypes('foo'));
+    }
+
     public function getFormatToMimeTypeMapProvider()
     {
         return array(