"""Load test benchmark validating sustained throughput for 100 articles/hour."""

import time
from pathlib import Path

from src.runtime.candidate.parser import build_candidates_payload
from src.runtime.hygiene.harness import execute_deterministic_hygiene_fallback


def test_sustained_throughput_benchmark():
    # Simulate processing 20 articles in batch
    ref_files = list(Path("evals/reference_20").glob("article_*.json"))
    assert len(ref_files) == 20

    start_time = time.time()
    for f in ref_files:
        import json

        data = json.loads(f.read_text(encoding="utf-8"))
        payload = build_candidates_payload(data)
        md, meta = execute_deterministic_hygiene_fallback(payload)
        assert len(md) > 0

    elapsed = time.time() - start_time
    # 20 articles in less than 30 seconds easily exceeds 100 articles/hour (36.0s per article = 720s for 20 articles)
    assert elapsed < 30.0, f"Processing took {elapsed}s, exceeded staging throughput SLA"