    @Test
    public void Db_verifyInvalidLogin() {

        final DBAuthenticator dbAuthenticator = new DBAuthenticator(
                ORG_H2_DRIVER,
                JDBC_H2_MEM_TEST,
                "SELECT PASSWORD FROM ACCOUNT WHERE LOGIN=?",
                SHA_256);
        assertFalse(dbAuthenticator.checkValid(null, "dbuser2", "password".getBytes()));
    }