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d40299b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | """Private pytest entry point with a bounded framework-tampering check.
The host still owns reward parsing. This guard detects replacement or in-place
editing of unittest assertions, a demonstrated attack against repository tests.
It does not claim to isolate arbitrary test and solution code in one interpreter.
"""
from __future__ import annotations
import sys
import unittest
def run(arguments: list[str]) -> int:
import pytest
# Capture before pytest imports any repository modules. Retain code objects
# too: an attacker can mutate function.__code__ without replacing a method.
original = {
name: (value, getattr(value, "__code__", None))
for name, value in vars(unittest.TestCase).items()
if name.startswith("assert") and callable(value)
}
case = unittest.TestCase
code = int(pytest.main(arguments))
changed = []
for name, (method, implementation) in original.items():
current = getattr(case, name, None)
if current is not method or getattr(current, "__code__", None) is not implementation:
changed.append(name)
if unittest.TestCase is not case or changed:
sys.stderr.write("Verifier framework was modified: " + ", ".join(changed) + "\n")
return 254
return code
if __name__ == "__main__":
raise SystemExit(run(sys.argv[1:]))
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