Organize tests

Author: sergey-miryanov

Lib/test/test_gc.py

@@ -1125,6 +1125,37 @@ def test_something(self):
         """)
         assert_python_ok("-c", source)
 
+    def test_do_not_cleanup_type_subclasses_before_finalization(self):
+        # https://github.com/python/cpython/issues/135552
+        code = textwrap.dedent("""
+            class BaseNode:
+                def __del__(self):
+                    BaseNode.next = BaseNode.next.next
+
+            class Node(BaseNode):
+                pass
+
+            BaseNode.next = Node()
+            BaseNode.next.next = Node()
+        """)
+        assert_python_ok("-c", code)
+
+        code_inside_function = textwrap.dedent("""
+            def test():
+                class BaseNode:
+                    def __del__(self):
+                        BaseNode.next = BaseNode.next.next
+
+                class Node(BaseNode):
+                    pass
+
+                BaseNode.next = Node()
+                BaseNode.next.next = Node()
+
+            test()
+        """)
+        assert_python_ok("-c", code_inside_function)
+
 
 class IncrementalGCTests(unittest.TestCase):
     @unittest.skipIf(_testinternalcapi is None, "requires _testinternalcapi")
@@ -1517,22 +1548,6 @@ def test_ast_fini(self):
         """)
         assert_python_ok("-c", code)
 
-    def test_reset_type_cache_after_finalization(self):
-        # https://github.com/python/cpython/issues/135552
-        code = textwrap.dedent("""
-            class BaseNode:
-                def __del__(self):
-                    BaseNode.next = BaseNode.next.next
-            
-            
-            class Node(BaseNode):
-                pass
-            
-            
-            BaseNode.next = Node()
-            BaseNode.next.next = Node()
-        """)
-        assert_python_ok("-c", code)
 
 
 def setUpModule():