From e37a158725dec561f234b81864363d55f05c7b4e Mon Sep 17 00:00:00 2001
From: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
Date: Fri, 17 Jun 2022 08:14:26 +0100
Subject: GH-83658: make multiprocessing.Pool raise an exception if
 maxtasksperchild is not None or a positive int (GH-93364)

Closes #83658.
---
 Lib/test/_test_multiprocessing.py | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'Lib/test/_test_multiprocessing.py')

diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py
index b20bc0b0801..75969975af3 100644
--- a/Lib/test/_test_multiprocessing.py
+++ b/Lib/test/_test_multiprocessing.py
@@ -2863,6 +2863,11 @@ class _TestPoolWorkerLifetime(BaseTestCase):
         for (j, res) in enumerate(results):
             self.assertEqual(res.get(), sqr(j))
 
+    def test_pool_maxtasksperchild_invalid(self):
+        for value in [0, -1, 0.5, "12"]:
+            with self.assertRaises(ValueError):
+                multiprocessing.Pool(3, maxtasksperchild=value)
+
     def test_worker_finalization_via_atexit_handler_of_multiprocessing(self):
         # tests cases against bpo-38744 and bpo-39360
         cmd = '''if 1:
-- 
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