def METHOD_NAME(self):
    """Unit test for class DeepScan.  Preview real files."""
    path = os.path.expanduser('~')
    searches = {path: []}
    for regex in ('^Makefile$', '~$', 'bak$', '^Thumbs.db$', '^Thumbs.db:encryptable$'):
        searches[path].append(Search(command='delete', regex=regex))
    ds = DeepScan(searches)
    for cmd in ds.scan():
        if True == cmd:
            # it's yielding control to the GTK idle loop
            continue
        self.assertLExists(cmd.path)