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c8e832f | 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 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 | """Helpers for deterministic pytest execution in temp sandboxes."""
from __future__ import annotations
import json
import subprocess
import sys
import tempfile
from dataclasses import dataclass
from pathlib import Path
from typing import Iterable
@dataclass(frozen=True)
class PytestExecution:
"""Exact pytest execution summary."""
passed: int
failed: int
total: int
timed_out: bool
output: str
def _test_module_source(tests: Iterable[str]) -> str:
"""Build a valid pytest module from expression-style or full test snippets."""
blocks: list[str] = ["from candidate import * # noqa: F401,F403"]
for index, test in enumerate(tests, start=1):
snippet = str(test).strip()
if not snippet:
continue
if snippet.startswith("def test_"):
blocks.append(snippet)
continue
blocks.append(
"\n".join(
[
f"def test_case_{index:03d}():",
f" assert {snippet}",
]
)
)
return "\n\n".join(blocks) or "def test_placeholder():\n assert True\n"
def _runner_script() -> str:
return """import json
import pathlib
import pytest
class Collector:
def __init__(self) -> None:
self.passed = 0
self.failed = 0
def pytest_runtest_logreport(self, report):
if report.when != "call":
return
if report.passed:
self.passed += 1
elif report.failed:
self.failed += 1
collector = Collector()
exit_code = pytest.main(["-q", "test_candidate.py"], plugins=[collector])
payload = {
"passed": collector.passed,
"failed": collector.failed,
"exit_code": int(exit_code),
}
pathlib.Path("pytest_results.json").write_text(json.dumps(payload), encoding="utf-8")
"""
def run_pytest_suite(candidate_code: str, tests: Iterable[str], timeout_s: float = 3.0) -> PytestExecution:
"""Run a pytest suite against candidate.py and return structured results."""
test_cases = list(tests)
try:
with tempfile.TemporaryDirectory(prefix="python-code-review-") as temp_dir:
temp_path = Path(temp_dir)
(temp_path / "candidate.py").write_text(candidate_code, encoding="utf-8")
(temp_path / "test_candidate.py").write_text(_test_module_source(test_cases), encoding="utf-8")
(temp_path / "runner.py").write_text(_runner_script(), encoding="utf-8")
try:
completed = subprocess.run(
[sys.executable, "runner.py"],
cwd=temp_path,
capture_output=True,
text=True,
timeout=timeout_s,
check=False,
)
except subprocess.TimeoutExpired as exc:
output = (exc.stdout or "") + (exc.stderr or "")
return PytestExecution(
passed=0,
failed=max(len(test_cases), 1),
total=max(len(test_cases), 1),
timed_out=True,
output=(output or "pytest timed out").strip(),
)
result_path = temp_path / "pytest_results.json"
if not result_path.exists():
output = (completed.stdout or "") + (completed.stderr or "")
total = max(len(test_cases), 1)
return PytestExecution(
passed=0,
failed=total,
total=total,
timed_out=False,
output=output.strip(),
)
try:
payload = json.loads(result_path.read_text(encoding="utf-8"))
except Exception as exc:
output = ((completed.stdout or "") + (completed.stderr or "")).strip()
return PytestExecution(
passed=0,
failed=max(len(test_cases), 1),
total=max(len(test_cases), 1),
timed_out=False,
output=(output or str(exc)).strip(),
)
passed = int(payload.get("passed", 0))
failed = int(payload.get("failed", 0))
total = max(passed + failed, len(test_cases))
output = ((completed.stdout or "") + (completed.stderr or "")).strip()
return PytestExecution(
passed=passed,
failed=failed,
total=total,
timed_out=False,
output=output,
)
except Exception as exc:
return PytestExecution(
passed=0,
failed=max(len(test_cases), 1),
total=max(len(test_cases), 1),
timed_out=False,
output=str(exc),
)
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