"""Error handler tests."""

from fastapi import HTTPException, status
from fastapi.testclient import TestClient

from sdlc_training_charliet.api.error_handlers import DEFAULT_ERROR_MSG


def exc_route():
    """Fake handler that only raises an exception."""
    raise Exception("something internal to pdp happened!")


def http_exc_route():
    """Fake handler that only raises an HTTPException."""
    raise HTTPException(detail="error message for the client.", status_code=400)


def test_default_error_handler(app) -> None:
    """Verify an uncaught exception returns a 500 with expected payload."""
    with TestClient(app, raise_server_exceptions=False) as test_client:
        app.add_api_route("/test_default_error_handler", endpoint=exc_route)

        response = test_client.get("/test_default_error_handler")
        assert response.status_code == status.HTTP_500_INTERNAL_SERVER_ERROR
        err = response.json()
        assert err["code"] == "internal_error"
        assert err["message"] == DEFAULT_ERROR_MSG


def test_http_error_handler(app) -> None:
    """Verify an uncaught exception returns a 4xx with expected payload."""
    with TestClient(app, raise_server_exceptions=False) as test_client:
        app.add_api_route("/test_http_error_handler", endpoint=http_exc_route)

        response = test_client.get("/test_http_error_handler")
        assert response.status_code == status.HTTP_400_BAD_REQUEST
        err = response.json()
        assert err["code"] == "bad_request"
        assert err["message"] == "error message for the client."