from pathlib import Path

import pytest

from l4d2host.spec import load_spec


def test_minimal_spec_parses(tmp_path: Path) -> None:
    path = tmp_path / "server.yaml"
    path.write_text("port: 27015\noverlays: [standard]\n")
    spec = load_spec(path)
    assert spec.port == 27015
    assert spec.overlays == ["standard"]


def test_defaults_are_empty_lists(tmp_path: Path) -> None:
    path = tmp_path / "server.yaml"
    path.write_text("port: 27015\n")
    spec = load_spec(path)
    assert spec.overlays == []
    assert spec.arguments == []
    assert spec.config == []


def test_missing_port_fails(tmp_path: Path) -> None:
    path = tmp_path / "server.yaml"
    path.write_text("overlays: [standard]\n")
    with pytest.raises((KeyError, ValueError, TypeError)):
        load_spec(path)


def test_unknown_keys_ignored(tmp_path: Path) -> None:
    path = tmp_path / "server.yaml"
    path.write_text("port: 27015\nfoo: bar\n")
    spec = load_spec(path)
    assert spec.port == 27015