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#!/usr/bin/env python3
"""Require identical generated input bytes across platforms and Perl versions."""
import hashlib
import json
from pathlib import Path
import subprocess
import sys
directory = Path(__file__).resolve().parent / "ii"
vectors = json.loads((directory / "generator-vectors.json").read_text(encoding="utf-8"))
for name, digest in vectors.items():
command = [sys.argv[1], str(directory / name / "generate.pl")]
outputs = []
for seed in ["0" * 40, "0" * 40, "1" * 40]:
result = subprocess.run([*command, seed, "100"], check=True, stdout=subprocess.PIPE,
stderr=subprocess.PIPE, timeout=10)
if result.stderr:
raise RuntimeError(f"{name}: unexpected stderr {result.stderr!r}")
outputs.append(result.stdout)
if outputs[0] != outputs[1] or outputs[0] == outputs[2]:
raise RuntimeError(f"{name}: seed reproducibility failed")
if hashlib.sha256(outputs[0]).hexdigest() != digest:
raise RuntimeError(f"{name}: generated input differs from the portable test vector")
print(f"PASS {name}: repeatable, seed-sensitive, portable bytes")
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