def test_commonpath() -> None:
path = Path("/foo/bar/baz/path")
subpath = path / "sampledir"
assert commonpath(path, subpath) == path
assert commonpath(subpath, path) == path
assert commonpath(Path(str(path) + "suffix"), path) == path.parent
assert commonpath(path, path.parent.parent) == path.parent.parent
def _check_initialpaths_for_relpath(session: "Session",
path: Path) -> Optional[str]:
for initial_path in session._initialpaths:
if commonpath(path, initial_path) == initial_path:
rel = str(path.relative_to(initial_path))
return "" if rel == "." else rel
return None
def get_common_ancestor(paths: Iterable[Path]) -> Path:
common_ancestor: Optional[Path] = None
for path in paths:
if not path.exists():
continue
if common_ancestor is None:
common_ancestor = path
else:
if common_ancestor in path.parents or path == common_ancestor:
continue
elif path in common_ancestor.parents:
common_ancestor = path
else:
shared = commonpath(path, common_ancestor)
if shared is not None:
common_ancestor = shared
if common_ancestor is None:
common_ancestor = Path.cwd()
elif common_ancestor.is_file():
common_ancestor = common_ancestor.parent
return common_ancestor
