From: Michael Droettboom <mdboom@gmail.com>
Date: Thu, 14 Jul 2022 21:46:40 +0000 (-0400)
Subject: GH-94808: Cover handling non-finite numbers from round when ndigits is provided ... 
X-Git-Tag: v3.12.0a1~956
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=625ba9bdff51baddf9d5e156e5facf05fa1003d6;p=thirdparty%2FPython%2Fcpython.git

GH-94808: Cover handling non-finite numbers from round when ndigits is provided (GH-94860)
---

diff --git a/Lib/test/test_float.py b/Lib/test/test_float.py
index 672ec1411555..b5e271abc86a 100644
--- a/Lib/test/test_float.py
+++ b/Lib/test/test_float.py
@@ -831,6 +831,11 @@ class RoundTestCase(unittest.TestCase):
         self.assertRaises(TypeError, round, NAN, "ceci n'est pas un integer")
         self.assertRaises(TypeError, round, -0.0, 1j)
 
+    def test_inf_nan_ndigits(self):
+        self.assertEqual(round(INF, 0), INF)
+        self.assertEqual(round(-INF, 0), -INF)
+        self.assertTrue(math.isnan(round(NAN, 0)))
+
     def test_large_n(self):
         for n in [324, 325, 400, 2**31-1, 2**31, 2**32, 2**100]:
             self.assertEqual(round(123.456, n), 123.456)