[issue28456] Test failures under macOS 10.12 Sierra

[Ned Deily]

Ned Deily added the comment:

This is a duplicate of Issue28087.

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[issue28456] Test failures under macOS 10.12 Sierra

[Ned Deily]

Changes by Ned Deily :


--
resolution:  -> duplicate
stage:  -> resolved
status: open -> closed
superseder:  -> macOS 12 poll syscall returns prematurely

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[issue28456] Test failures under macOS 10.12 Sierra

[STINNER Victor]

STINNER Victor added the comment:

Try to modify pyconfig.h to define HAVE_BROKEN_POLL. It should work around the 
bug.

configure.ac contains a test for HAVE_BROKEN_POLL. We need another test for 
poll() being broken differently.

Note: asyncio doesn't seem to be affect because it probably uses the more 
efficient kqueue by default on OS X.

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[issue28456] Test failures under macOS 10.12 Sierra

[STINNER Victor]

STINNER Victor added the comment:

See https://daniel.haxx.se/blog/2016/10/11/poll-on-mac-10-12-is-broken/

C function poll() seems to be broken on Sierra.

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nosy: +haypo, lukasz.langa, ned.deily, ronaldoussoren

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[issue28456] Test failures under macOS 10.12 Sierra

[Raymond Hettinger]

New submission from Raymond Hettinger:

On a fresh checkout, I'm getting two test failures:

$ ./configure && make
$ ./python.exe -m test.regrtest -v test_asyncore
 [snip]
==
FAIL: test_handle_expt (test.test_asyncore.TestAPI_UseIPv4Poll)
--
Traceback (most recent call last):
  File "/Users/raymond/cleancpython/Lib/test/test_asyncore.py", line 674, in 
test_handle_expt
self.loop_waiting_for_flag(client)
  File "/Users/raymond/cleancpython/Lib/test/test_asyncore.py", line 514, in 
loop_waiting_for_flag
self.fail("flag not set")
AssertionError: flag not set

==
FAIL: test_handle_expt (test.test_asyncore.TestAPI_UseIPv6Poll)
--
Traceback (most recent call last):
  File "/Users/raymond/cleancpython/Lib/test/test_asyncore.py", line 674, in 
test_handle_expt
self.loop_waiting_for_flag(client)
  File "/Users/raymond/cleancpython/Lib/test/test_asyncore.py", line 514, in 
loop_waiting_for_flag
self.fail("flag not set")
AssertionError: flag not set

--
Ran 101 tests in 20.506s

FAILED (failures=2, skipped=6)
test test_asyncore failed
test_asyncore failed

1 test failed:
test_asyncore


$ ./python.exe -m test.regrtest -v test_eintr
  [snip]

==
FAIL: test_poll (__main__.SelectEINTRTest)
--
Traceback (most recent call last):
  File "/Users/raymond/cleancpython/Lib/test/eintrdata/eintr_tester.py", line 
446, in test_poll
self.assertGreaterEqual(dt, self.sleep_time)
AssertionError: 9.176997991744429e-06 not greater than or equal to 0.2

--
Ran 22 tests in 5.288s

FAILED (failures=1, skipped=5)
---

stderr:
---
Traceback (most recent call last):
  File "/Users/raymond/cleancpython/Lib/test/eintrdata/eintr_tester.py", line 
492, in 
test_main()
  File "/Users/raymond/cleancpython/Lib/test/eintrdata/eintr_tester.py", line 
488, in test_main
SelectEINTRTest)
  File "/Users/raymond/cleancpython/Lib/test/support/__init__.py", line 1849, 
in run_unittest
_run_suite(suite)
  File "/Users/raymond/cleancpython/Lib/test/support/__init__.py", line 1824, 
in _run_suite
raise TestFailed(err)
test.support.TestFailed: Traceback (most recent call last):
  File "/Users/raymond/cleancpython/Lib/test/eintrdata/eintr_tester.py", line 
446, in test_poll
self.assertGreaterEqual(dt, self.sleep_time)
AssertionError: 9.176997991744429e-06 not greater than or equal to 0.2
---

--
Ran 1 test in 5.424s

FAILED (failures=1)
test test_eintr failed
test_eintr failed

1 test failed:
test_eintr

Total duration: 5 sec
Tests result: FAILURE

--
components: Interpreter Core
messages: 278780
nosy: rhettinger
priority: normal
severity: normal
status: open
title: Test failures under macOS 10.12 Sierra
versions: Python 3.6

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