hermes-agent/tests/test_install_lockfile_churn.py

110 lines
3.7 KiB
Python

"""Regression: installer update should discard pure npm lockfile churn.
Desktop/bootstrap installs update an existing managed checkout in place. Local
build steps often rewrite tracked ``package-lock.json`` without touching the
matching ``package.json``; treating that churn as a real local edit forces an
autostash and can abort the repository stage before the desktop comes back up.
The installer should discard that generated churn before its stash/checkout
logic, while still preserving intentional package edits where ``package.json``
and ``package-lock.json`` changed together.
"""
from __future__ import annotations
import re
import shutil
import subprocess
from pathlib import Path
import pytest
REPO_ROOT = Path(__file__).resolve().parent.parent
INSTALL_SH = REPO_ROOT / "scripts" / "install.sh"
INSTALL_PS1 = REPO_ROOT / "scripts" / "install.ps1"
pytestmark = pytest.mark.skipif(
shutil.which("git") is None or shutil.which("bash") is None,
reason="needs git and bash",
)
def _git(cwd: Path, *args: str, check: bool = True) -> subprocess.CompletedProcess:
return subprocess.run(
["git", "-c", "user.email=t@t", "-c", "user.name=t", *args],
cwd=cwd,
check=check,
capture_output=True,
text=True,
)
def _extract_install_sh_function(name: str) -> str:
text = INSTALL_SH.read_text()
match = re.search(rf"{name}\(\) \{{.*?\n\}}", text, re.DOTALL)
assert match is not None, f"{name}() not found in install.sh"
return match.group(0)
def _extract_install_sh_autostash_block() -> str:
text = INSTALL_SH.read_text()
match = re.search(
r'local autostash_ref="".*?\n fi\n',
text,
re.DOTALL,
)
assert match is not None, "autostash block not found in install.sh"
return match.group(0)
@pytest.mark.live_system_guard_bypass
def test_install_sh_discards_runtime_lockfile_churn_before_stash(
tmp_path: Path,
) -> None:
repo = tmp_path / "hermes-agent"
repo.mkdir()
_git(repo, "init")
(repo / "package.json").write_text('{"dependencies":{"a":"1"}}\n')
(repo / "package-lock.json").write_text('{"lock":"old"}\n')
_git(repo, "add", "package.json", "package-lock.json")
_git(repo, "commit", "-m", "init")
(repo / "package-lock.json").write_text('{"lock":"runtime-churn"}\n')
script = (
"set -e\n"
'log_info() { echo "INFO: $*"; }\n'
'INSTALL_DIR="$PWD"\n'
f"{_extract_install_sh_function('discard_update_lockfile_churn')}\n"
"run() {\n"
f"{_extract_install_sh_autostash_block()}"
"}\n"
"run\n"
)
res = subprocess.run(
["bash", "-c", script], cwd=repo, capture_output=True, text=True
)
assert res.returncode == 0, res.stderr
assert "Discarded npm lockfile churn (1 file(s))" in res.stdout
assert _git(repo, "stash", "list").stdout.strip() == ""
assert (repo / "package-lock.json").read_text() == '{"lock":"old"}\n'
def test_install_sh_discards_lockfile_churn_before_status_probe() -> None:
text = INSTALL_SH.read_text()
idx_cleanup = text.index('discard_update_lockfile_churn "$INSTALL_DIR"')
idx_status = text.index('if [ -n "$(git status --porcelain)" ]')
idx_stash = text.index("git stash push --include-untracked")
assert idx_cleanup < idx_status < idx_stash
def test_install_ps1_discards_lockfile_churn_before_status_probe() -> None:
text = INSTALL_PS1.read_text()
assert "function Discard-LockfileChurn" in text
idx_cleanup = text.index("Discard-LockfileChurn $InstallDir")
idx_status = text.index(
"$statusOut = git -c windows.appendAtomically=false status --porcelain"
)
idx_stash = text.index("stash push --include-untracked")
assert idx_cleanup < idx_status < idx_stash