bpo-40014: Skip os.getgrouplist related test if OSError is raised.

Lib/test/pythoninfo.py

@@ -333,9 +333,13 @@ def collect_pwd(info_add):
         return
 
     if hasattr(os, 'getgrouplist'):
-        groups = os.getgrouplist(entry.pw_name, entry.pw_gid)
-        groups = ', '.join(map(str, groups))
-        info_add('os.getgrouplist', groups)
+        try:
+            groups = os.getgrouplist(entry.pw_name, entry.pw_gid)
+            groups = ', '.join(map(str, groups))
+        except OSError:
+            pass
+        else:
+            info_add('os.getgrouplist', groups)
 
 
 def collect_readline(info_add):

Lib/test/test_posix.py

@@ -1025,8 +1025,15 @@ def _create_and_do_getcwd(dirname, current_path_length = 0):
     def test_getgrouplist(self):
         user = pwd.getpwuid(os.getuid())[0]
         group = pwd.getpwuid(os.getuid())[3]
-        self.assertIn(group, posix.getgrouplist(user, group))
-
+        try:
+            self.assertIn(group, posix.getgrouplist(user, group))
+        except OSError as e:
+            # bpo-40014: getgrouplist fails with
+            # "[Errno 25] Inappropriate ioctl for device" on macOS
+            if sys.platform == 'darwin':
+                raise unittest.SkipTest("bpo-40014: os.getgrouplist() is not available")
+            else:
+                raise e
 
     @unittest.skipUnless(hasattr(os, 'getegid'), "test needs os.getegid()")
     def test_getgroups(self):

Misc/NEWS.d/next/Tests/2020-03-20-01-12-30.bpo-40014.h9SHIQ.rst

@@ -0,0 +1,2 @@
+test.pythoninfo: skip :func:`~os.getgrouplist` if it raises an :exc:`OSError`.
+Patch by Dong-hee Na.