from pathlib import Path

from l4d2host.instances import initialize_instance


def test_initialize_writes_files(tmp_path: Path) -> None:
    spec = tmp_path / "spec.yaml"
    spec.write_text("port: 27015\noverlays: [a,b]\nconfig: ['sv_consistency 1']\n")

    initialize_instance("alpha", spec, root=tmp_path)

    assert (tmp_path / "instances/alpha/instance.env").exists()
    assert (tmp_path / "instances/alpha/server.cfg").exists()


def test_empty_config_writes_empty_server_cfg(tmp_path: Path) -> None:
    spec = tmp_path / "spec.yaml"
    spec.write_text("port: 27015\n")

    initialize_instance("alpha", spec, root=tmp_path)

    assert (tmp_path / "instances/alpha/server.cfg").read_text() == ""