changeset:   103202:7a243a40b421
user:        Victor Stinner <victor.stinner@gmail.com>
date:        Tue Sep 06 19:57:40 2016 -0700
files:       Lib/test/test_os.py
description:
Fix test_os.GetRandomTests()

Issue #27778: Skip getrandom() tests if getrandom() fails with ENOSYS.


diff -r 786c34bdc27a -r 7a243a40b421 Lib/test/test_os.py
--- a/Lib/test/test_os.py	Tue Sep 06 19:55:55 2016 -0700
+++ b/Lib/test/test_os.py	Tue Sep 06 19:57:40 2016 -0700
@@ -1271,6 +1271,18 @@
 
 @unittest.skipUnless(hasattr(os, 'getrandom'), 'need os.getrandom()')
 class GetRandomTests(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        try:
+            os.getrandom(1)
+        except OSError as exc:
+            if exc.errno == errno.ENOSYS:
+                # Python compiled on a more recent Linux version
+                # than the current Linux kernel
+                raise unittest.SkipTest("getrandom() syscall fails with ENOSYS")
+            else:
+                raise
+
     def test_getrandom_type(self):
         data = os.getrandom(16)
         self.assertIsInstance(data, bytes)