def getExistingUserInfo(self):
        """
        Add a new user to C{self.database} and return its information.
        """
        self._counter += 1
        suffix = '_' + str(self._counter)
        username = 'username' + suffix
        password = 'password' + suffix
        uid = self._counter
        gid = self._counter + 1000
        gecos = 'gecos' + suffix
        dir = 'dir' + suffix
        shell = 'shell' + suffix

        self.database.addUser(username, password, uid, gid, gecos, dir, shell)
        return (username, password, uid, gid, gecos, dir, shell)

        Add a new user to C{self.database} and return its information.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/python/test/test_fakepwd.py