@Override
    public void deleteUser(String username) {
        String sql = "DELETE FROM users WHERE username=?";
        try {
            EmbeddedStorageContextHolder.addSqlContext(sql, username);
            databaseOperate.blockUpdate();
        } finally {
            EmbeddedStorageContextHolder.cleanAllContext();
        }
    }
@Test
    void testDeleteUser() {
        embeddedUserPersistService.deleteUser("username");
        
        Mockito.verify(databaseOperate).blockUpdate();
    }