'A filesystem which is created for a locally owned volume is writeable.'

def test_locally_owned_created_writeable(self):

    pool = build_pool(self)
    service = service_for_pool(self, pool)
    volume = service.get(MY_VOLUME)
    d = pool.create(volume)
    def created_filesystems(filesystem):
        filesystem.get_path().child('text').setContent('hello')
    d.addCallback(created_filesystems)
    return d
