Complete typing of all generic types (#7406)

And update ``mypy`` configuration

1 files changed, 9 insertions, 6 deletions

diff --git a/tests/checkers/unittest_stdlib.py b/tests/checkers/unittest_stdlib.py
index 2f47a4075..66747deb9 100644
--- a/tests/checkers/unittest_stdlib.py
+++ b/tests/checkers/unittest_stdlib.py
@@ -6,23 +6,26 @@ from __future__ import annotations
 
 import contextlib
 from collections.abc import Callable, Iterator
-from typing import Any
+from typing import Any, Type
 
 import astroid
 from astroid import nodes
+from astroid.context import InferenceContext
 from astroid.manager import AstroidManager
 
 from pylint.checkers import stdlib
 from pylint.testutils import CheckerTestCase
 
+_NodeNGT = Type[nodes.NodeNG]
+
 
 @contextlib.contextmanager
 def _add_transform(
     manager: AstroidManager,
-    node: type,
-    transform: Callable,
+    node: _NodeNGT,
+    transform: Callable[[_NodeNGT], _NodeNGT],
     predicate: Any | None = None,
-) -> Iterator:
+) -> Iterator[None]:
     manager.register_transform(node, transform, predicate)
     try:
         yield
@@ -43,8 +46,8 @@ class TestStdlibChecker(CheckerTestCase):
 
         def infer_func(
             inner_node: nodes.Name,
-            context: Any | None = None,  # pylint: disable=unused-argument
-        ) -> Iterator[Iterator | Iterator[nodes.AssignAttr]]:
+            context: InferenceContext | None = None,  # pylint: disable=unused-argument
+        ) -> Iterator[nodes.AssignAttr]:
             new_node = nodes.AssignAttr(attrname="alpha", parent=inner_node)
             yield new_node