"""Tests for the freeroute CLI (Specctra DSN in, SES out)."""

from __future__ import annotations

from pathlib import Path

import pytest

from freeroute.cli import main

FIXTURE = Path(__file__).parent / "dsn" / "fixtures" / "simple_2net.dsn"


def test_cli_jar_compatible_flags_write_ses(tmp_path):
    out = tmp_path / "out.ses"
    rc = main(["-de", str(FIXTURE), "-do", str(out)])
    assert rc == 0
    text = out.read_text()
    assert text.startswith("(session")
    assert "(net" in text and "(wire" in text


def test_cli_positional_input_to_stdout(capsys):
    rc = main([str(FIXTURE)])
    assert rc == 0
    assert "(session" in capsys.readouterr().out


def test_cli_missing_input_errors():
    with pytest.raises(SystemExit):
        main([])


def test_cli_unreadable_input_returns_2(capsys):
    rc = main(["/nonexistent/board.dsn"])
    assert rc == 2
    assert "cannot read" in capsys.readouterr().err