add test, fix add_notes->add_note, add _is_protocol

Author: jakkdl

docs/changelog.rst

@@ -4,7 +4,7 @@ Changelog
 
 `CalVer, YY.month.patch <https://calver.org/>`_
 
-25.5.2
+FUTURE
 ======
 - Add :ref:`ASYNC400 <async400>` except-star-invalid-attribute.
 

docs/usage.rst

@@ -33,7 +33,7 @@ adding the following to your ``.pre-commit-config.yaml``:
    minimum_pre_commit_version: '2.9.0'
    repos:
    - repo: https://github.com/python-trio/flake8-async
-     rev: 25.5.2
+     rev: 25.5.1
      hooks:
        - id: flake8-async
          # args: ["--enable=ASYNC100,ASYNC112", "--disable=", "--autofix=ASYNC"]

flake8_async/__init__.py

@@ -38,7 +38,7 @@
 
 
 # CalVer: YY.month.patch, e.g. first release of July 2022 == "22.7.1"
-__version__ = "25.5.2"
+__version__ = "25.5.1"
 
 
 # taken from https://github.com/Zac-HD/shed

flake8_async/visitors/visitor4xx.py

@@ -24,7 +24,9 @@
     # from BaseException
     "args",
     "with_traceback",
-    "add_notes",
+    "add_note",
+    # in the backport
+    "_is_protocol",
 )
 
 

tests/eval_files/async400_py311.py

@@ -15,7 +15,7 @@
     # from BaseException
     e.args
     e.with_traceback
-    e.add_notes
+    e.add_note
 
     # ignore anything that looks like a dunder
     e.__foo__

tests/test_flake8_async.py

@@ -26,6 +26,10 @@
 from flake8_async import Plugin
 from flake8_async.base import Error, Statement
 from flake8_async.visitors import ERROR_CLASSES, ERROR_CLASSES_CST
+from flake8_async.visitors.visitor4xx import EXCGROUP_ATTRS
+
+if sys.version_info < (3, 11):
+    from exceptiongroup import ExceptionGroup
 
 if TYPE_CHECKING:
     from collections.abc import Iterable, Sequence
@@ -846,6 +850,13 @@ async def foo():
             assert not errors, "# false alarm:\n" + function_str
 
 
+def test_async400_excgroup_attributes():
+    for attr in dir(ExceptionGroup):
+        if attr.startswith("__") and attr.endswith("__"):
+            continue
+        assert attr in EXCGROUP_ATTRS
+
+
 # from https://docs.python.org/3/library/itertools.html#itertools-recipes
 def consume(iterator: Iterable[Any]):
     deque(iterator, maxlen=0)