import json
from collections import defaultdict
from pathlib import Path

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

def load():
    with (ROOT / "data" / "all.jsonl").open(encoding="utf-8") as f:
        return [json.loads(line) for line in f]

def test_record_count():
    assert len(load()) == 3000

def test_unique_ids_and_fingerprints():
    rows = load()
    assert len({r["id"] for r in rows}) == 3000
    assert len({r["quality"]["structural_fingerprint"] for r in rows}) == 3000

def test_split_sizes():
    rows = load()
    counts = {s: sum(r["split"] == s for r in rows) for s in ("train", "validation", "test")}
    assert counts == {"train": 2400, "validation": 300, "test": 300}

def test_no_archetype_split_leakage():
    rows = load()
    seen = defaultdict(set)
    for row in rows:
        seen[row["task"]["archetype"]].add(row["split"])
    assert all(len(splits) == 1 for splits in seen.values())

def test_behavior_is_primary_axis():
    rows = load()
    assert len({r["task"]["family"] for r in rows}) == 12
    assert len({r["task"]["archetype"] for r in rows}) == 120