"""gui.main() startup path: the splash banner is a PNG again (the SVG
rendered wrong on RHEL9 consoles), so the resource block must resolve it —
and a failed startup must exit through the graceful error path, not crash."""

from unittest.mock import MagicMock, patch

import pytest


def test_main_resolves_banner_and_exits_gracefully(qapp):
    from aare.gui import gui

    with (
        # A second QApplication would abort; hand main() a stand-in instead.
        patch.object(gui, "QApplication", return_value=MagicMock()),
        # process() on the stand-in app exits the interpreter at C level
        # ("argument list cannot be empty") — option defaults still apply.
        patch.object(gui.QCommandLineParser, "process", lambda self, app: None),
        patch.object(gui, "QMessageBox"),
        patch.object(gui, "auth", side_effect=RuntimeError("no server")),
        pytest.raises(SystemExit),
    ):
        gui.main()