"""Nested .gitignore parity tests.
We validate that IgnoreEngine matches Git's behavior for .gitignore files in
subdirectories, including negation and anchored patterns.
"""
from __future__ import annotations
import subprocess
from pathlib import Path
from typing import Iterable
import pytest
def run_git(args: list[str], cwd: Path) -> subprocess.CompletedProcess[str]:
return subprocess.run([
"git",
"-c",
"core.autocrlf=false",
"-c",
"core.safecrlf=false",
*args,
], cwd=str(cwd), text=True, capture_output=True, check=False)
def git_ignored(paths: Iterable[str], repo: Path) -> dict[str, bool]:
out: dict[str, bool] = {}
for p in paths:
proc = run_git(["check-ignore", "-q", "--no-index", p], repo)
out[p] = (proc.returncode == 0)
return out
@pytest.mark.asyncio
async def test_git_parity_nested_negation_and_anchoring(tmp_path: Path) -> None:
repo = tmp_path
assert run_git(["init"], repo).returncode == 0
# Root .gitignore: ignore logs everywhere and a root-only file
(repo / ".gitignore").write_text("""*.log
/only-at-root.txt
""")
# Subdirectory .gitignore: ignore 'build/' inside sub, but re-include keep.log
(repo / "sub").mkdir(parents=True, exist_ok=True)
(repo / "sub" / ".gitignore").write_text("""build/
!keep.log
""")
# Create files to test
(repo / "a.log").write_text("x")
(repo / "only-at-root.txt").write_text("x")
(repo / "sub" / "b.log").write_text("x")
(repo / "sub" / "keep.log").write_text("x")
(repo / "sub" / "build").mkdir(parents=True, exist_ok=True)
(repo / "sub" / "build" / "tool.txt").write_text("x")
(repo / "other" / "build").mkdir(parents=True, exist_ok=True)
(repo / "other" / "build" / "tool.txt").write_text("x")
rels = [
"a.log", # ignored by root *.log
"only-at-root.txt", # ignored by root anchored path
"sub/b.log", # ignored by root *.log (still ignored)
"sub/keep.log", # re-included by sub/.gitignore
"sub/build/tool.txt", # ignored by sub/.gitignore build/
"other/build/tool.txt", # not ignored (no sub/.gitignore in 'other')
]
gmap = git_ignored(rels, repo)
from chunkhound.utils.ignore_engine import build_ignore_engine # type: ignore
engine = build_ignore_engine(root=repo, sources=["gitignore"], chignore_file=".chignore", config_exclude=None)
emap: dict[str, bool] = {}
for p in rels:
emap[p] = engine.matches(repo / p, is_dir=False) is not None
assert emap == gmap
