import pytest
from unittest.mock import patch, MagicMock
from sut.backend.services.auth_service import AuthService

def test_authenticate_success():
    # Arrange
    auth_service = AuthService()
    username = "frodo"
    password = "shire123"
    with patch.object(auth_service, 'verify_password', return_value=True):
        # Act
        result = auth_service.authenticate(username, password)
        # Assert
        assert result is True