How to use the tabpy.tabpy_server.handlers.util.hash_password function in tabpy

def setUpClass(cls):
        cls.patcher = patch(
            "tabpy.tabpy_server.app.app.TabPyApp._parse_cli_arguments",
            return_value=Namespace(config=None),
        )
        cls.patcher.start()

        prefix = "__TestEndpointsHandlerWithAuth_"
        # create password file
        cls.pwd_file = tempfile.NamedTemporaryFile(
            mode="w+t", prefix=prefix, suffix=".txt", delete=False
        )
        username = "username"
        password = "password"
        cls.pwd_file.write(f"{username} {hash_password(username, password)}")
        cls.pwd_file.close()

        # create state.ini dir and file
        cls.state_dir = tempfile.mkdtemp(prefix=prefix)
        cls.state_file = open(os.path.join(cls.state_dir, "state.ini"), "w+")
        cls.state_file.write(
            "[Service Info]\n"
            "Name = TabPy Serve\n"
            "Description = \n"
            "Creation Time = 0\n"
            "Access-Control-Allow-Origin = \n"
            "Access-Control-Allow-Headers = \n"
            "Access-Control-Allow-Methods = \n"
            "\n"
            "[Query Objects Service Versions]\n"
            "\n"

def setUpClass(cls):
        cls.patcher = patch(
            "tabpy.tabpy_server.app.app.TabPyApp._parse_cli_arguments",
            return_value=Namespace(config=None),
        )
        cls.patcher.start()

        prefix = "__TestEndpointHandlerWithAuth_"
        # create password file
        cls.pwd_file = tempfile.NamedTemporaryFile(
            mode="w+t", prefix=prefix, suffix=".txt", delete=False
        )
        username = "username"
        password = "password"
        cls.pwd_file.write(f"{username} {hash_password(username, password)}")
        cls.pwd_file.close()

        # create state.ini dir and file
        cls.state_dir = tempfile.mkdtemp(prefix=prefix)
        cls.state_file = open(os.path.join(cls.state_dir, "state.ini"), "w+")
        cls.state_file.write(
            "[Service Info]\n"
            "Name = TabPy Serve\n"
            "Description = \n"
            "Creation Time = 0\n"
            "Access-Control-Allow-Origin = \n"
            "Access-Control-Allow-Headers = \n"
            "Access-Control-Allow-Methods = \n"
            "\n"
            "[Query Objects Service Versions]\n"
            "\n"

def update_user(args, credentials):
    username = args.username.lower()
    logger.info(f'Updating username "{username}"')

    if username not in credentials:
        logger.error(
            f'Username "{username}" not found in passwords file. '
            'Do you want to run "add" command instead?'
        )
        return False

    password = args.password
    logger.info(f'Updating username "{username}" password  to "{password}"')
    credentials[username] = hash_password(username, password)
    return store_passwords_file(args.pwdfile, credentials)

def add_user(args, credentials):
    username = args.username.lower()
    logger.info(f'Adding username "{username}"')

    if username in credentials:
        logger.error(
            f"Can't add username {username} as it is already present"
            " in passwords file. Do you want to run the "
            '"update" command instead?'
        )
        return False

    password = args.password
    logger.info(f'Adding username "{username}" with password "{password}"...')
    credentials[username] = hash_password(username, password)

    if store_passwords_file(args.pwdfile, credentials):
        logger.info(f'Added username "{username}" with password "{password}"')
    else:
        logger.info(
            f'Could not add username "{username}" , ' f'password "{password}" to file'
        )