Fix ClassDef insert

Author: cdce8p

astroid/brain/brain_typing.py

@@ -178,13 +178,13 @@ def infer_typing_alias(
 
     if res != astroid.Uninferable and isinstance(res, nodes.ClassDef):
         class_def = nodes.ClassDef(
-            name=res.name,
-            lineno=res.lineno,
-            col_offset=res.col_offset,
+            name=f"{res.name}_typing",
+            lineno=0,
+            col_offset=0,
             parent=res.parent,
         )
         class_def.postinit(
-            bases=res.bases,
+            bases=[res],
             body=res.body,
             decorators=res.decorators,
             metaclass=create_typing_metaclass(),
@@ -194,8 +194,8 @@ def infer_typing_alias(
     if len(node.args) == 2 and isinstance(node.args[0], nodes.Attribute):
         class_def = nodes.ClassDef(
             name=node.args[0].attrname,
-            lineno=node.lineno,
-            col_offset=node.col_offset,
+            lineno=0,
+            col_offset=0,
             parent=node.parent,
         )
         class_def.postinit(

tests/unittest_brain.py

@@ -1218,18 +1218,15 @@ def test_typing_alias_type(self):
 
         def check_metaclass(node: nodes.ClassDef):
             meta = node.metaclass()
-            assert (
-                isinstance(meta, nodes.ClassDef)
-                and meta.name == "ABCMeta_typing"
-                and "ABCMeta" == meta.basenames[0]
-                and meta.locals.get("__getitem__") is not None
-            )
+            assert isinstance(meta, nodes.ClassDef)
+            assert meta.name == "ABCMeta_typing"
+            assert "ABCMeta" == meta.basenames[0]
+            assert meta.locals.get("__getitem__") is not None
+
             abc_meta = next(meta.bases[0].infer())
-            assert (
-                isinstance(abc_meta, nodes.ClassDef)
-                and abc_meta.name == "ABCMeta"
-                and abc_meta.locals.get("__getitem__") is None
-            )
+            assert isinstance(abc_meta, nodes.ClassDef)
+            assert abc_meta.name == "ABCMeta"
+            assert abc_meta.locals.get("__getitem__") is None
 
         node = builder.extract_node(
             """
@@ -1248,6 +1245,7 @@ class Derived1(MutableSet[T]):
             inferred,
             [
                 "Derived1",
+                "MutableSet_typing",
                 "MutableSet",
                 "Set",
                 "Collection",
@@ -1271,6 +1269,7 @@ class Derived2(typing.OrderedDict[int, str]):
             inferred,
             [
                 "Derived2",
+                "OrderedDict_typing",
                 "OrderedDict",
                 "dict",
                 "object",