[3.13] gh-89928: Fix integer conversion of device numbers (GH-31794) (GH-120053)

Fix os.major(), os.minor() and os.makedev().
Support device numbers larger than 2**63-1.
Support non-existent device number (NODEV).
(cherry picked from commit 7111d9605f9db7aa0b095bb8ece7ccc0b8115c3f)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

1 files changed, 13 insertions, 2 deletions

diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py
index 7e5f04c..908354c 100644
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -704,7 +704,8 @@ class PosixTester(unittest.TestCase):
         self.assertEqual(posix.major(dev), major)
         self.assertRaises(TypeError, posix.major, float(dev))
         self.assertRaises(TypeError, posix.major)
-        self.assertRaises((ValueError, OverflowError), posix.major, -1)
+        for x in -2, 2**64, -2**63-1:
+            self.assertRaises((ValueError, OverflowError), posix.major, x)
 
         minor = posix.minor(dev)
         self.assertIsInstance(minor, int)
@@ -712,13 +713,23 @@ class PosixTester(unittest.TestCase):
         self.assertEqual(posix.minor(dev), minor)
         self.assertRaises(TypeError, posix.minor, float(dev))
         self.assertRaises(TypeError, posix.minor)
-        self.assertRaises((ValueError, OverflowError), posix.minor, -1)
+        for x in -2, 2**64, -2**63-1:
+            self.assertRaises((ValueError, OverflowError), posix.minor, x)
 
         self.assertEqual(posix.makedev(major, minor), dev)
         self.assertRaises(TypeError, posix.makedev, float(major), minor)
         self.assertRaises(TypeError, posix.makedev, major, float(minor))
         self.assertRaises(TypeError, posix.makedev, major)
         self.assertRaises(TypeError, posix.makedev)
+        for x in -2, 2**32, 2**64, -2**63-1:
+            self.assertRaises((ValueError, OverflowError), posix.makedev, x, minor)
+            self.assertRaises((ValueError, OverflowError), posix.makedev, major, x)
+
+        if sys.platform == 'linux':
+            NODEV = -1
+            self.assertEqual(posix.major(NODEV), NODEV)
+            self.assertEqual(posix.minor(NODEV), NODEV)
+            self.assertEqual(posix.makedev(NODEV, NODEV), NODEV)
 
     def _test_all_chown_common(self, chown_func, first_param, stat_func):
         """Common code for chown, fchown and lchown tests."""