[Filesystem] Fixed a bug in remove being unable to remove symlinks to unexisting file or directory.

Author: jakzal

src/Symfony/Component/Filesystem/Filesystem.php

@@ -88,7 +88,7 @@ public function remove($files)
         $files = iterator_to_array($this->toIterator($files));
         $files = array_reverse($files);
         foreach ($files as $file) {
-            if (!file_exists($file)) {
+            if (!file_exists($file) && !is_link($file)) {
                 continue;
             }
 

src/Symfony/Component/Filesystem/Tests/FilesystemTest.php

@@ -297,6 +297,22 @@ public function testRemoveIgnoresNonExistingFiles()
         $this->assertTrue(!is_dir($basePath.'dir'));
     }
 
+    public function testRemoveCleansInvalidLinks()
+    {
+        $this->markAsSkippeIfSymlinkIsMissing();
+
+        $basePath = $this->workspace.DIRECTORY_SEPARATOR.'directory'.DIRECTORY_SEPARATOR;
+
+        mkdir($basePath);
+        mkdir($basePath.'dir');
+        // create symlink to unexisting file
+        symlink($basePath.'file', $basePath.'link');
+
+        $this->filesystem->remove($basePath);
+
+        $this->assertTrue(!is_dir($basePath));
+    }
+
     public function testChmodChangesFileMode()
     {
         $file = $this->workspace.DIRECTORY_SEPARATOR.'file';