# This module is part of GitPython and is released under the

# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/

"""Verify that the source repository is usable by git."""

import subprocess

from pathlib import Path

import pytest

REPO_ROOT = Path(__file__).resolve().parent.parent

FIXTURE_DIRS = [pytest.param(REPO_ROOT, id="repo_root")]

def test_source_tree_has_no_gitlinks() -> None:

"""All formerly external dependencies are regular monorepo directories."""

if not (REPO_ROOT / ".git").exists():

pytest.skip(f"{REPO_ROOT} is not a git checkout")

try:

result = subprocess.run(

["git", "ls-files", "--stage"],

cwd=REPO_ROOT,

capture_output=True,

text=True,

check=True,

)

except FileNotFoundError:

pytest.skip("git is not installed or not on PATH")

gitlinks = [line for line in result.stdout.splitlines() if line.startswith("160000 ")]

assert not gitlinks, "Unexpected submodules:\n" + "\n".join(gitlinks)

@pytest.mark.parametrize("fixture_dir", FIXTURE_DIRS)

def test_fixture_dir_is_trusted_by_git(fixture_dir: Path) -> None:

"""git accepts ``fixture_dir`` as its own repository owned by a trusted user.

Run ``git -C <fixture_dir> rev-parse --show-toplevel`` and assert it

succeeds and reports ``fixture_dir`` itself as the toplevel. Failure

typically means the directory's on-disk ownership doesn't match the

running user and the CI workflow's ``safe.directory`` list is missing

an entry that would override the check.

"""

if not (fixture_dir / ".git").exists():

pytest.skip(f"{fixture_dir} is not a git checkout")

try:

result = subprocess.run(

["git", "-C", str(fixture_dir), "rev-parse", "--show-toplevel"],

capture_output=True,

text=True,

check=False,

)

except FileNotFoundError:

pytest.skip("git is not installed or not on PATH")

assert result.returncode == 0, (

f"git refuses to operate in {fixture_dir}.\n"

f"stderr: {result.stderr.strip()}\n"

"The directory's owner doesn't match the running user and no "

"`safe.directory` entry overrides the check. On CI, the "

"workflow's `safe.directory` list typically needs an entry for "

"this path. Locally, this is unexpected and usually indicates "

"an ownership problem worth investigating."

)

reported = Path(result.stdout.strip())

assert reported.samefile(fixture_dir), (

f"git reports the toplevel as {reported}, "

f"not as {fixture_dir} itself. "

"This usually means the directory is not an initialized git "

"repository (its `.git` marker may be stale or pointing elsewhere)."

)