ftbfs asyncio test failure with 3.5.1-2, used to pass with 3.5.0-2

[Dimitri John Ledkov]

ftbfs asyncio test failure with 3.5.1-2, used to pass with 3.5.0-2

[Dimitri John Ledkov (xnox)]

Ok, reverting just the asyncio changes between 3.5.1-2 and 3.5.0-2 makes the cython test-suite pass. I shall forward this finding to python upstream and cython.

[Dimitri John Ledkov (xnox)]

Attached are the changes to the asyncio module between 3.5.0 and 3.5.1 as packaged in ubuntu. Reverse applying this patch against 3.5.1 makes the cython test-suite pass.

Otherwise cython test suite fails on any architecture as seen in https://launchpad.net/ubuntu/+source/cython/0.23.4-0ubuntu1
E.g. amd64 https://launchpadlibrarian.net/232316886/buildlog_ubuntu-xenial-amd64.cython_0.23.4-0ubuntu1_BUILDING.txt.gz

======================================================================
FAIL: runTest (__main__.EndToEndTest)
End-to-end asyncio_generators
----------------------------------------------------------------------
Traceback (most recent call last):
  File "runtests.py", line 1417, in runTest
    self.assertEqual(0, res, "non-zero exit status")
AssertionError: 0 != 1 : non-zero exit status

[Barry Warsaw (barry)]

FWIW, instrumenting cython's asyncio_generators.srctree file to show both events and expected at the failing assertion, we see:

End-to-end asyncio_generators ... /home/barry/projects/debian/cython/upstream/.tox/py35/bin/python test_async_def_future.py

Traceback (most recent call last):
  File "test_async_def_future.py", line 16, in <module>
    runloop()
  File "test_async_def_future.py", line 14, in runloop
    assert events == expected, (events, '==', expected)
AssertionError: (['setup', 'setval', None], '==', ['setup', 'setval', 123])

[Barry Warsaw (barry)]

xnox's posting (still no responses):

https://mail.python.org/pipermail/cython-devel/2015-December/004630.html

[Dimitri John Ledkov (xnox)]

asyncio issue https://github.com/python/asyncio/issues/308

[Dimitri John Ledkov (xnox)]

cython (0.23.4-0ubuntu4) xenial; urgency=medium

  * Cherry-pick upstream patch to fix FTBFS due to async/3.5 test suite
    failures.

 -- Dimitri John Ledkov <email address hidden> Mon, 15 Feb 2016 15:03:02 +0000