"""Tests for scripts/aggregate_directives.py.

These tests exercise the script via subprocess to verify the contract:
 - reads v1.md files only (never meta.md)
 - emits clean bodies separated by '====' header
 - exits 1 on missing files
 - emits to stdout by default; -o writes to file
"""
from __future__ import annotations

import subprocess
import sys
from pathlib import Path

REPO_ROOT = Path(__file__).resolve().parent.parent
SCRIPT = REPO_ROOT / "scripts" / "aggregate_directives.py"
PRESET = REPO_ROOT / "conductor" / "directives" / "presets" / "current_baseline.md"


def _run(args: list[str], cwd: Path | None = None) -> subprocess.CompletedProcess:
 return subprocess.run(
 [sys.executable, str(SCRIPT), *args],
 capture_output=True,
 text=True,
 encoding="utf-8",
 cwd=cwd or REPO_ROOT,
 )


def test_runs_against_current_baseline() -> None:
 result = _run([str(PRESET)])
 assert result.returncode == 0, "script should succeed; stderr=" + result.stderr
 body = result.stdout
 assert "atomic_per_task_commits" in body
 assert "ban_dict_any" in body
 assert "knowledge_harvest_pattern" in body
 assert body.count("========================================") >= 51 * 2


def test_meta_md_pollution_fix() -> None:
 result = _run([str(PRESET)])
 body = result.stdout
 assert "**Why this iteration:**" not in body
 assert "**Lifted:**" not in body


def test_missing_file_exits_nonzero(tmp_path: Path) -> None:
 bad = tmp_path / "bad_preset.md"
 bad.write_text("- missing_thing: conductor/directives/missing_thing/v1.md\n", encoding="utf-8")
 result = _run([str(bad)])
 assert result.returncode != 0
 assert "missing_thing" in result.stderr


def test_output_flag_writes_to_file(tmp_path: Path) -> None:
 out = tmp_path / "out.md"
 result = _run([str(PRESET), "-o", str(out)])
 assert result.returncode == 0
 assert out.exists()
 content = out.read_text(encoding="utf-8")
 assert "ban_dict_any" in content
 assert content.count("========================================") >= 51 * 2


def test_no_meta_md_reads() -> None:
 result = _run([str(PRESET)])
 body = result.stdout
 assert "Provenance" not in body
 assert "## v1" not in body
 assert "# ban_dict_any" not in body