[HttpFoundation] Fixed incorrect test; MimeTypeGuesser should be (and is) able to detect a path that is not a file also without the 'fileinfo' extension

tests/Symfony/Tests/Component/HttpFoundation/File/MimeType/MimeTypeTest.php

@@ -33,13 +33,9 @@ class MimeTypeTest extends \PHPUnit_Framework_TestCase
 
     public function testGuessImageWithDirectory()
     {
-        if (extension_loaded('fileinfo')) {
-            $this->setExpectedException('Symfony\Component\HttpFoundation\File\Exception\FileNotFoundException');
+        $this->setExpectedException('Symfony\Component\HttpFoundation\File\Exception\FileNotFoundException');
 
-            $this->assertEquals('image/gif', MimeTypeGuesser::getInstance()->guess(__DIR__.'/../Fixtures/directory'));
-        } else {
-            $this->assertNull(MimeTypeGuesser::getInstance()->guess(__DIR__.'/../Fixtures/directory'));
-        }
+        MimeTypeGuesser::getInstance()->guess(__DIR__.'/../Fixtures/directory');
     }
 
     public function testGuessImageWithContentTypeMimeTypeGuesser()