fix: Don't trigger alias resolution when merging stubs

Issue #89: #89

src/griffe/merger.py

@@ -55,6 +55,8 @@ def _merge_stubs_members(obj: Module | Class, stubs: Module | Class) -> None: #
  for member_name, stub_member in stubs.members.items():
  if member_name in obj.members:
  obj_member = obj[member_name]
+ if obj_member.is_alias:
+ continue
  if obj_member.kind is not stub_member.kind:
  logger.debug(f"Cannot merge stubs of kind {stub_member.kind} into object of kind {obj_member.kind}")
  elif obj_member.is_class:

tests/test_merger.py

@@ -0,0 +1,32 @@
+"""Tests for the `merger` module."""
+
+from textwrap import dedent
+
+from griffe.loader import GriffeLoader
+from tests.helpers import temporary_pypackage
+
+
+def test_dont_trigger_alias_resolution_when_merging_stubs():
+ """Assert that we don't trigger alias resolution when merging stubs."""
+ with temporary_pypackage("package", ["mod.py", "mod.pyi"]) as tmp_package:
+ tmp_package.path.joinpath("mod.py").write_text(
+ dedent(
+ """
+ import pathlib
+
+ def f() -> pathlib.Path:
+ return pathlib.Path()
+ """
+ )
+ )
+ tmp_package.path.joinpath("mod.pyi").write_text(
+ dedent(
+ """
+ import pathlib
+
+ def f() -> pathlib.Path: ...
+ """
+ )
+ )
+ loader = GriffeLoader(search_paths=[tmp_package.tmpdir])
+ loader.load_module(tmp_package.name)