Apply mypy config override to blocked_signals

Author: uranusjr

tests/lib/compat.py

@@ -1,5 +1,8 @@
+# mypy: no-warn-unused-ignores
+
 import contextlib
-from typing import Iterator
+import signal
+from typing import Iterable, Iterator
 
 
 @contextlib.contextmanager
@@ -18,3 +21,34 @@ def nullcontext() -> Iterator[None]:
     support.
     """
     yield
+
+
+# Applies on Windows.
+if not hasattr(signal, "pthread_sigmask"):
+    # We're not relying on this behavior anywhere currently, it's just best
+    # practice.
+    blocked_signals = nullcontext
+else:
+
+    @contextlib.contextmanager
+    def blocked_signals() -> Iterator[None]:
+        """Block all signals for e.g. starting a worker thread."""
+        # valid_signals() was added in Python 3.8 (and not using it results
+        # in a warning on pthread_sigmask() call)
+        mask: Iterable[int]
+        try:
+            mask = signal.valid_signals()
+        except AttributeError:
+            mask = set(range(1, signal.NSIG))
+
+        old_mask = signal.pthread_sigmask(  # type: ignore[attr-defined]
+            signal.SIG_SETMASK,  # type: ignore[attr-defined]
+            mask,
+        )
+        try:
+            yield
+        finally:
+            signal.pthread_sigmask(  # type: ignore[attr-defined]
+                signal.SIG_SETMASK,  # type: ignore[attr-defined]
+                old_mask,
+            )

tests/lib/server.py

@@ -1,5 +1,4 @@
 import os
-import signal
 import ssl
 import threading
 from base64 import b64encode
@@ -11,7 +10,7 @@
 from werkzeug.serving import BaseWSGIServer, WSGIRequestHandler
 from werkzeug.serving import make_server as _make_server
 
-from .compat import nullcontext
+from .compat import blocked_signals
 
 if TYPE_CHECKING:
     from _typeshed.wsgi import StartResponse, WSGIApplication, WSGIEnvironment
@@ -23,37 +22,6 @@ class MockServer(BaseWSGIServer):
     mock: Mock = Mock()
 
 
-# Applies on Windows.
-if not hasattr(signal, "pthread_sigmask"):
-    # We're not relying on this behavior anywhere currently, it's just best
-    # practice.
-    blocked_signals = nullcontext
-else:
-
-    @contextmanager
-    def blocked_signals() -> Iterator[None]:
-        """Block all signals for e.g. starting a worker thread."""
-        # valid_signals() was added in Python 3.8 (and not using it results
-        # in a warning on pthread_sigmask() call)
-        mask: Iterable[int]
-        try:
-            mask = signal.valid_signals()
-        except AttributeError:
-            mask = set(range(1, signal.NSIG))
-
-        old_mask = signal.pthread_sigmask(  # type: ignore[attr-defined]
-            signal.SIG_SETMASK,  # type: ignore[attr-defined]
-            mask,
-        )
-        try:
-            yield
-        finally:
-            signal.pthread_sigmask(  # type: ignore[attr-defined]
-                signal.SIG_SETMASK,  # type: ignore[attr-defined]
-                old_mask,
-            )
-
-
 class _RequestHandler(WSGIRequestHandler):
     def make_environ(self) -> Dict[str, Any]:
         environ = super().make_environ()