diff --git a/CHANGES/8139.contrib.rst b/CHANGES/8139.contrib.rst
new file mode 100644
index 00000000000..fd743e70f4a
--- /dev/null
+++ b/CHANGES/8139.contrib.rst
@@ -0,0 +1 @@
+Two definitions for "test_invalid_route_name" existed, only one was being run. Refactored them into a single parameterized test. Enabled lint rule to prevent regression. -- by :user:`alexmac`.
diff --git a/setup.cfg b/setup.cfg
index 71dc26c9789..c291057ec7a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -87,7 +87,7 @@ zip_ok = false
 [flake8]
 extend-select = B950
 # TODO: don't disable D*, fix up issues instead
-ignore = N801,N802,N803,E203,E226,E305,W504,E252,E301,E302,E501,E704,W503,W504,F811,D1,D4
+ignore = N801,N802,N803,E203,E226,E305,W504,E252,E301,E302,E501,E704,W503,W504,D1,D4
 max-line-length = 88
 per-file-ignores =
     # I900: Shouldn't appear in requirements for examples.
diff --git a/tests/test_resolver.py b/tests/test_resolver.py
index 6140e385cc1..1b389f3601b 100644
--- a/tests/test_resolver.py
+++ b/tests/test_resolver.py
@@ -179,33 +179,7 @@ async def unknown_addrinfo(*args: Any, **kwargs: Any) -> List[Any]:
 
 
 async def test_close_for_threaded_resolver(loop) -> None:
-    resolver = ThreadedResolver(loop=loop)
-    await resolver.close()
-
-
-async def test_threaded_negative_lookup_with_unknown_result() -> None:
-    loop = Mock()
-
-    # If compile CPython with `--disable-ipv6` option,
-    # we will get an (int, bytes) tuple, instead of a Exception.
-    async def unknown_addrinfo(*args: Any, **kwargs: Any) -> List[Any]:
-        return [
-            (
-                socket.AF_INET6,
-                socket.SOCK_STREAM,
-                6,
-                "",
-                (10, b"\x01\xbb\x00\x00\x00\x00*\x04NB\x00\x1a\x00\x00"),
-            )
-        ]
-
-    loop.getaddrinfo = unknown_addrinfo
     resolver = ThreadedResolver()
-    resolver._loop = loop
-    with patch("socket.has_ipv6", False):
-        res = await resolver.resolve("www.python.org")
-    assert len(res) == 0
-
     await resolver.close()
 
 
diff --git a/tests/test_urldispatch.py b/tests/test_urldispatch.py
index 6a656104fd2..cbd6395e238 100644
--- a/tests/test_urldispatch.py
+++ b/tests/test_urldispatch.py
@@ -1130,14 +1130,16 @@ def test_subapp_iter(app) -> None:
     assert list(resource) == [r1, r2]
 
 
-def test_invalid_route_name(router) -> None:
-    with pytest.raises(ValueError):
-        router.add_get("/", make_handler(), name="invalid name")
-
-
-def test_invalid_route_name(router) -> None:
+@pytest.mark.parametrize(
+    "route_name",
+    (
+        "invalid name",
+        "class",
+    ),
+)
+def test_invalid_route_name(router, route_name: str) -> None:
     with pytest.raises(ValueError):
-        router.add_get("/", make_handler(), name="class")  # identifier
+        router.add_get("/", make_handler(), name=route_name)
 
 
 def test_frozen_router(router) -> None: