Require newer aiohttp for blackd (#4451)

CHANGES.md

@@ -34,6 +34,7 @@
 <!-- Changes to how Black is packaged, such as dependency requirements -->
 
 - Upgrade version of mypyc used to 1.11.2 (#4450)
+- `blackd` now requires a newer version of aiohttp. (#4451)
 
 ### Parser
 

pyproject.toml

@@ -78,10 +78,7 @@ dynamic = ["readme", "version"]
 [project.optional-dependencies]
 colorama = ["colorama>=0.4.3"]
 uvloop = ["uvloop>=0.15.2"]
-d = [
+d = ["aiohttp>=3.10"]
-  "aiohttp>=3.7.4; sys_platform != 'win32' or implementation_name != 'pypy'",
-  "aiohttp>=3.7.4, !=3.9.0; sys_platform == 'win32' and implementation_name == 'pypy'",
-]
 jupyter = [
   "ipython>=7.8.0",
   "tokenize-rt>=3.2.0",
@@ -219,23 +216,7 @@ markers = [
   "incompatible_with_mypyc: run when testing mypyc compiled black"
 ]
 xfail_strict = true
-filterwarnings = [
+filterwarnings = ["error"]
-    "error",
-    # this is mitigated by a try/catch in https://github.com/psf/black/pull/2974/
-    # this ignore can be removed when support for aiohttp 3.7 is dropped.
-    '''ignore:Decorator `@unittest_run_loop` is no longer needed in aiohttp 3\.8\+:DeprecationWarning''',
-    # this is mitigated by a try/catch in https://github.com/psf/black/pull/3198/
-    # this ignore can be removed when support for aiohttp 3.x is dropped.
-    '''ignore:Middleware decorator is deprecated since 4\.0 and its behaviour is default, you can simply remove this decorator:DeprecationWarning''',
-    # aiohttp is using deprecated cgi modules - Safe to remove when fixed:
-    # https://github.com/aio-libs/aiohttp/issues/6905
-    '''ignore:'cgi' is deprecated and slated for removal in Python 3.13:DeprecationWarning''',
-    # Work around https://github.com/pytest-dev/pytest/issues/10977 for Python 3.12
-    '''ignore:(Attribute s|Attribute n|ast.Str|ast.Bytes|ast.NameConstant|ast.Num) is deprecated and will be removed in Python 3.14:DeprecationWarning''',
-    # Will be fixed with aiohttp 3.9.0
-    # https://github.com/aio-libs/aiohttp/pull/7302
-    "ignore:datetime.*utcfromtimestamp\\(\\) is deprecated and scheduled for removal:DeprecationWarning",
-]
 [tool.coverage.report]
 omit = [
   "src/blib2to3/*",

src/blackd/middlewares.py

@@ -1,29 +1,12 @@
-from typing import TYPE_CHECKING, Any, Awaitable, Callable, Iterable, TypeVar
+from typing import Awaitable, Callable, Iterable
 
+from aiohttp.typedefs import Middleware
+from aiohttp.web_middlewares import middleware
 from aiohttp.web_request import Request
 from aiohttp.web_response import StreamResponse
 
 Handler = Callable[[Request], Awaitable[StreamResponse]]
 
-if TYPE_CHECKING:
-    from aiohttp.typedefs import Middleware
-
-    F = TypeVar("F", bound=Callable[..., Any])
-    middleware: Callable[[F], F]
-else:
-    try:
-        # Available in aiohttp 3.9 and newer
-        from aiohttp.typedefs import Middleware
-    except ImportError:
-        Middleware = Callable[[Request, Handler], Awaitable[StreamResponse]]
-
-    try:
-        from aiohttp.web_middlewares import middleware
-    except ImportError:
-        # @middleware is deprecated and its behaviour is the default since aiohttp 4.0
-        # so if it doesn't exist anymore, define a no-op for forward compatibility.
-        middleware = lambda x: x  # noqa: E731
-
 
 def cors(allow_headers: Iterable[str]) -> Middleware:
     @middleware

tests/test_blackd.py

@@ -1,5 +1,4 @@
 import re
-from typing import TYPE_CHECKING, Any, Callable, TypeVar
 from unittest.mock import patch
 
 import pytest
@@ -15,20 +14,6 @@
 except ImportError as e:
     raise RuntimeError("Please install Black with the 'd' extra") from e
 
-if TYPE_CHECKING:
-    F = TypeVar("F", bound=Callable[..., Any])
-
-    unittest_run_loop: Callable[[F], F] = lambda x: x
-else:
-    try:
-        from aiohttp.test_utils import unittest_run_loop
-    except ImportError:
-        # unittest_run_loop is unnecessary and a no-op since aiohttp 3.8, and
-        # aiohttp 4 removed it. To maintain compatibility we can make our own
-        # no-op decorator.
-        def unittest_run_loop(func, *args, **kwargs):
-            return func
-
 
 @pytest.mark.blackd
 class BlackDTestCase(AioHTTPTestCase):
@@ -42,20 +27,17 @@ def test_blackd_main(self) -> None:
     async def get_application(self) -> web.Application:
         return blackd.make_app()
 
-    @unittest_run_loop
     async def test_blackd_request_needs_formatting(self) -> None:
         response = await self.client.post("/", data=b"print('hello world')")
         self.assertEqual(response.status, 200)
         self.assertEqual(response.charset, "utf8")
         self.assertEqual(await response.read(), b'print("hello world")\n')
 
-    @unittest_run_loop
     async def test_blackd_request_no_change(self) -> None:
         response = await self.client.post("/", data=b'print("hello world")\n')
         self.assertEqual(response.status, 204)
         self.assertEqual(await response.read(), b"")
 
-    @unittest_run_loop
     async def test_blackd_request_syntax_error(self) -> None:
         response = await self.client.post("/", data=b"what even ( is")
         self.assertEqual(response.status, 400)
@@ -65,21 +47,18 @@ async def test_blackd_request_syntax_error(self) -> None:
             msg=f"Expected error to start with 'Cannot parse', got {repr(content)}",
         )
 
-    @unittest_run_loop
     async def test_blackd_unsupported_version(self) -> None:
         response = await self.client.post(
             "/", data=b"what", headers={blackd.PROTOCOL_VERSION_HEADER: "2"}
         )
         self.assertEqual(response.status, 501)
 
-    @unittest_run_loop
     async def test_blackd_supported_version(self) -> None:
         response = await self.client.post(
             "/", data=b"what", headers={blackd.PROTOCOL_VERSION_HEADER: "1"}
         )
         self.assertEqual(response.status, 200)
 
-    @unittest_run_loop
     async def test_blackd_invalid_python_variant(self) -> None:
         async def check(header_value: str, expected_status: int = 400) -> None:
             response = await self.client.post(
@@ -102,7 +81,6 @@ async def check(header_value: str, expected_status: int = 400) -> None:
         await check("pypy3.0")
         await check("jython3.4")
 
-    @unittest_run_loop
     async def test_blackd_pyi(self) -> None:
         source, expected = read_data("cases", "stub.py")
         response = await self.client.post(
@@ -111,7 +89,6 @@ async def test_blackd_pyi(self) -> None:
         self.assertEqual(response.status, 200)
         self.assertEqual(await response.text(), expected)
 
-    @unittest_run_loop
     async def test_blackd_diff(self) -> None:
         diff_header = re.compile(
             r"(In|Out)\t\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d\.\d\d\d\d\d\d\+\d\d:\d\d"
@@ -129,7 +106,6 @@ async def test_blackd_diff(self) -> None:
         actual = diff_header.sub(DETERMINISTIC_HEADER, actual)
         self.assertEqual(actual, expected)
 
-    @unittest_run_loop
     async def test_blackd_python_variant(self) -> None:
         code = (
             "def f(\n"
@@ -161,14 +137,12 @@ async def check(header_value: str, expected_status: int) -> None:
         await check("py34,py36", 204)
         await check("34", 204)
 
-    @unittest_run_loop
     async def test_blackd_line_length(self) -> None:
         response = await self.client.post(
             "/", data=b'print("hello")\n', headers={blackd.LINE_LENGTH_HEADER: "7"}
         )
         self.assertEqual(response.status, 200)
 
-    @unittest_run_loop
     async def test_blackd_invalid_line_length(self) -> None:
         response = await self.client.post(
             "/",
@@ -177,7 +151,6 @@ async def test_blackd_invalid_line_length(self) -> None:
         )
         self.assertEqual(response.status, 400)
 
-    @unittest_run_loop
     async def test_blackd_skip_first_source_line(self) -> None:
         invalid_first_line = b"Header will be skipped\r\ni = [1,2,3]\nj = [1,2,3]\n"
         expected_result = b"Header will be skipped\r\ni = [1, 2, 3]\nj = [1, 2, 3]\n"
@@ -191,19 +164,16 @@ async def test_blackd_skip_first_source_line(self) -> None:
         self.assertEqual(response.status, 200)
         self.assertEqual(await response.read(), expected_result)
 
-    @unittest_run_loop
     async def test_blackd_preview(self) -> None:
         response = await self.client.post(
             "/", data=b'print("hello")\n', headers={blackd.PREVIEW: "true"}
         )
         self.assertEqual(response.status, 204)
 
-    @unittest_run_loop
     async def test_blackd_response_black_version_header(self) -> None:
         response = await self.client.post("/")
         self.assertIsNotNone(response.headers.get(blackd.BLACK_VERSION_HEADER))
 
-    @unittest_run_loop
     async def test_cors_preflight(self) -> None:
         response = await self.client.options(
             "/",
@@ -218,13 +188,11 @@ async def test_cors_preflight(self) -> None:
         self.assertIsNotNone(response.headers.get("Access-Control-Allow-Headers"))
         self.assertIsNotNone(response.headers.get("Access-Control-Allow-Methods"))
 
-    @unittest_run_loop
     async def test_cors_headers_present(self) -> None:
         response = await self.client.post("/", headers={"Origin": "*"})
         self.assertIsNotNone(response.headers.get("Access-Control-Allow-Origin"))
         self.assertIsNotNone(response.headers.get("Access-Control-Expose-Headers"))
 
-    @unittest_run_loop
     async def test_preserves_line_endings(self) -> None:
         for data in (b"c\r\nc\r\n", b"l\nl\n"):
             # test preserved newlines when reformatted
@@ -234,14 +202,12 @@ async def test_preserves_line_endings(self) -> None:
             response = await self.client.post("/", data=data)
             self.assertEqual(response.status, 204)
 
-    @unittest_run_loop
     async def test_normalizes_line_endings(self) -> None:
         for data, expected in ((b"c\r\nc\n", "c\r\nc\r\n"), (b"l\nl\r\n", "l\nl\n")):
             response = await self.client.post("/", data=data)
             self.assertEqual(await response.text(), expected)
             self.assertEqual(response.status, 200)
 
-    @unittest_run_loop
     async def test_single_character(self) -> None:
         response = await self.client.post("/", data="1")
         self.assertEqual(await response.text(), "1\n")