static void teardown(void **state) {
    struct torture_sftp *t = *state;

    assert_false(t == NULL);

    torture_rmdirs(t->testdir);
    torture_sftp_close(t);
}
static int session_teardown(void **state)
{
    struct torture_state *s = *state;

    torture_rmdirs(s->ssh.tsftp->testdir);
    torture_sftp_close(s->ssh.tsftp);
    ssh_disconnect(s->ssh.session);
    ssh_free(s->ssh.session);

    return 0;
}