gh-110378: Fix test_async_gen_propagates_generator_exit in test_conte…

…xtlib_async (GH-110500) It now fails if the original bug is not fixed, and no longer produce ResourceWarning with fixed code. (cherry picked from commit 5aa62a8) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
python · ambv · Oct 10, 2023 · Oct 10, 2023 · Oct 10, 2023 · dd2e259357f10842e7dc47c3b7672f1d81900f9c
commit dd2e259357f10842e7dc47c3b7672f1d81900f9c
@@ -49,15 +49,11 @@ async def gen():
            async with ctx():
                yield 11

-        ret = []
-        exc = ValueError(22)
-        with self.assertRaises(ValueError):
-            async with ctx():
-                async for val in gen():
-                    ret.append(val)
-                    raise exc
-
-        self.assertEqual(ret, [11])
+        g = gen()
+        async for val in g:
+            self.assertEqual(val, 11)
+            break
+        await g.aclose()

    def test_exit_is_abstract(self):
        class MissingAexit(AbstractAsyncContextManager):