gh-135386: Skip readonly tests for the root user (GH-138058)

Author: serhiy-storchaka

Lib/test/test_dbm_sqlite3.py

@@ -16,6 +16,11 @@
 from dbm.sqlite3 import _normalize_uri
 
 
+root_in_posix = False
+if hasattr(os, 'geteuid'):
+    root_in_posix = (os.geteuid() == 0)
+
+
 class _SQLiteDbmTests(unittest.TestCase):
 
     def setUp(self):
@@ -92,6 +97,7 @@ def test_readonly_iter(self):
         self.assertEqual([k for k in self.db], [b"key1", b"key2"])
 
 
+@unittest.skipIf(root_in_posix, "test is meanless with root privilege")
 class ReadOnlyFilesystem(unittest.TestCase):
 
     def setUp(self):