closes bpo-37252: Fix devpoll tests. (GH-14017)

Lib/test/test_devpoll.py

@@ -109,7 +109,7 @@ class DevPollTests(unittest.TestCase):
         # operations must fail with ValueError("I/O operation on closed ...")
         self.assertRaises(ValueError, devpoll.modify, fd, select.POLLIN)
         self.assertRaises(ValueError, devpoll.poll)
-        self.assertRaises(ValueError, devpoll.register, fd, fd, select.POLLIN)
+        self.assertRaises(ValueError, devpoll.register, fd, select.POLLIN)
         self.assertRaises(ValueError, devpoll.unregister, fd)
 
     def test_fd_non_inheritable(self):
@@ -122,9 +122,9 @@ class DevPollTests(unittest.TestCase):
         w, r = os.pipe()
         pollster.register(w)
         # Issue #17919
-        self.assertRaises(OverflowError, pollster.register, 0, -1)
+        self.assertRaises(ValueError, pollster.register, 0, -1)
         self.assertRaises(OverflowError, pollster.register, 0, 1 << 64)
-        self.assertRaises(OverflowError, pollster.modify, 1, -1)
+        self.assertRaises(ValueError, pollster.modify, 1, -1)
         self.assertRaises(OverflowError, pollster.modify, 1, 1 << 64)
 
     @cpython_only

Misc/NEWS.d/next/Tests/2019-06-12-14-30-29.bpo-37252.4o-uLs.rst

+Fix assertions in ``test_close`` and ``test_events_mask_overflow`` devpoll
+tests.