from pathlib import Path
import subprocess
import sys


ROOT = Path(__file__).resolve().parents[1]


def test_cli_runs_and_reports_metrics(tmp_path: Path) -> None:
    result = subprocess.run(
        [
            sys.executable,
            "-m",
            "composer_ans",
            "--thes-root",
            str(ROOT / "THES"),
            "--notes",
            "4",
            "--object-threshold",
            "2",
            "--max-attempts-per-note",
            "600",
            "--art-vigilance",
            "0.85",
            "--art-vigilance-decay",
            "0.98",
            "--save-salieri",
            str(tmp_path / "salieri.json"),
            "--save-beethoven",
            str(tmp_path / "beethoven.json"),
            "--save-report",
            str(tmp_path / "report.json"),
        ],
        cwd=ROOT,
        text=True,
        capture_output=True,
        check=True,
    )

    assert "notes:" in result.stdout
    assert "per_note_seconds:" in result.stdout
    assert "total_seconds:" in result.stdout
    assert "unigram_entropy_bits:" in result.stdout
    assert (tmp_path / "salieri.json").exists()
    assert (tmp_path / "beethoven.json").exists()
    assert (tmp_path / "report.json").exists()