[3.12] gh-103186: Suppress RuntimeWarning about unclosed async iterator in test_sys_settrace (GH-109075) (#109138)

gh-103186: Suppress RuntimeWarning about unclosed async iterator in test_sys_settrace (GH-109075)
(cherry picked from commit d485551)

Co-authored-by: Serhiy Storchaka <[email protected]>

Author: miss-islington

Lib/test/test_sys_settrace.py

@@ -41,6 +41,20 @@ async def asynciter(iterable):
     for x in iterable:
         yield x
 
+def clean_asynciter(test):
+    @wraps(test)
+    async def wrapper(*args, **kwargs):
+        cleanups = []
+        def wrapped_asynciter(iterable):
+            it = asynciter(iterable)
+            cleanups.append(it.aclose)
+            return it
+        try:
+            return await test(*args, **kwargs, asynciter=wrapped_asynciter)
+        finally:
+            while cleanups:
+                await cleanups.pop()()
+    return wrapper
 
 # A very basic example.  If this fails, we're in deep trouble.
 def basic():
@@ -1914,7 +1928,11 @@ def compare_jump_output(self, expected, received):
 
     def run_test(self, func, jumpFrom, jumpTo, expected, error=None,
                  event='line', decorated=False, warning=None):
-        tracer = JumpTracer(func, jumpFrom, jumpTo, event, decorated)
+        wrapped = func
+        while hasattr(wrapped, '__wrapped__'):
+            wrapped = wrapped.__wrapped__
+
+        tracer = JumpTracer(wrapped, jumpFrom, jumpTo, event, decorated)
         sys.settrace(tracer.trace)
         output = []
 
@@ -1930,7 +1948,11 @@ def run_test(self, func, jumpFrom, jumpTo, expected, error=None,
 
     def run_async_test(self, func, jumpFrom, jumpTo, expected, error=None,
                  event='line', decorated=False, warning=None):
-        tracer = JumpTracer(func, jumpFrom, jumpTo, event, decorated)
+        wrapped = func
+        while hasattr(wrapped, '__wrapped__'):
+            wrapped = wrapped.__wrapped__
+
+        tracer = JumpTracer(wrapped, jumpFrom, jumpTo, event, decorated)
         sys.settrace(tracer.trace)
         output = []
 
@@ -2001,15 +2023,17 @@ def test_jump_out_of_block_backwards(output):
         output.append(7)
 
     @async_jump_test(4, 5, [3, 5])
-    async def test_jump_out_of_async_for_block_forwards(output):
+    @clean_asynciter
+    async def test_jump_out_of_async_for_block_forwards(output, asynciter):
         for i in [1]:
             async for i in asynciter([1, 2]):
                 output.append(3)
                 output.append(4)
             output.append(5)
 
     @async_jump_test(5, 2, [2, 4, 2, 4, 5, 6])
-    async def test_jump_out_of_async_for_block_backwards(output):
+    @clean_asynciter
+    async def test_jump_out_of_async_for_block_backwards(output, asynciter):
         for i in [1]:
             output.append(2)
             async for i in asynciter([1]):