This storage is in the global scope. However the scope is limited to the
underlying filesystem. I.e. the scope is not shared between hosts.
/**
* Tests deleting fails.
*
* @test
* @expectedException bandwidthThrottle\tokenBucket\storage\StorageException
*/
public function testRemoveFails()
{
$data = new vfsStreamFile("data");
$root = vfsStream::setup('test');
$root->chmod(0);
$root->addChild($data);
$storage = new FileStorage(vfsStream::url("test/data"));
$storage->remove();
}