# Source code for flask_login.test_client

    from flask.testing import FlaskClient

    class FlaskLoginClient(FlaskClient):
        """
        A Flask test client that knows how to log in users
        using the Flask-Login extension.
        """

        def __init__(self, *args, **kwargs):
            user = kwargs.pop("user", None)
            fresh = kwargs.pop("fresh_login", True)

            super().__init__(*args, **kwargs)

            if user:
                with self.session_transaction() as sess:
                    sess["_user_id"] = user.get_id()
                    sess["_fresh"] = fresh