import sys
import unittest
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
SRC = ROOT / "src"
if str(SRC) not in sys.path:
    sys.path.insert(0, str(SRC))

from agent_app.agent import SimpleAgent


class SimpleAgentTests(unittest.TestCase):
    def test_agent_returns_message(self) -> None:
        agent = SimpleAgent(name="Tester")
        response = agent.respond("hello")
        self.assertEqual(response.text, "Tester received: hello")
        self.assertEqual(len(response.history), 2)


if __name__ == "__main__":
    unittest.main()