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"""Pytest harness for the hook scripts under hooks/.
Hook filenames are hyphenated (git-commit-confirm.py, etc.), so they
cannot be imported by module name. `load_hook(filename)` loads them by
path via importlib, and inserts hooks/ onto sys.path first so each hook's
own `from _common import ...` resolves.
"""
import importlib.util
import sys
from pathlib import Path
import pytest
HOOKS_DIR = Path(__file__).resolve().parent.parent
def load_hook(filename: str):
"""Load a hook script by filename and return its module object.
Inserts hooks/ onto sys.path (idempotently) so the hook's
`from _common import ...` works, then loads the file by path under a
sanitized module name.
"""
hooks_dir = str(HOOKS_DIR)
if hooks_dir not in sys.path:
sys.path.insert(0, hooks_dir)
path = HOOKS_DIR / filename
mod_name = "hook_" + filename.replace("-", "_").replace(".py", "")
spec = importlib.util.spec_from_file_location(mod_name, path)
if spec is None or spec.loader is None:
raise ImportError(f"could not load hook from {path}")
module = importlib.util.module_from_spec(spec)
spec.loader.exec_module(module)
return module
@pytest.fixture
def load_hook_fixture():
return load_hook
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