I managed to find where the readfrom code was. I added trace to the
exec_net.Message class and it show that the initial 0x00 bytes is not recieved
in readfrom.
* writeto:
header = (3, 1, 3, 0)
Length: 12, Binary: 0x['00', '03', '00', '01', '00', '00', '00', '03', '00',
'00', '00', '00']
* readfrom:
header = (768, 256, 768, 0)
Length: 12, Binary: 0x['03', '00', '01', '00', '00', '00', '03', '00', '00',
'00', '00', '00']
Now, were it gets weird is that I can get py.test -f working by adding the
traces. I definetly get some non determinist behaviour there. The bug may be
caused by some race condition that somehow has become more likely to occur.
Another stuff that I don't understand:
I copied the mecanism from gateway.py to declare the "log" (the debug
variable), and if the "log" variable is also named debug, then on the slave
side, both message and gateway traces end-up in the message "log". The gateway
log is created but never written into. Is it caused by the "magic" that send
python code to the slave ?
Baptiste.
----- Original Message -----
From: Baptiste Lepilleur
To: py-dev@codespeak.net
Sent: Saturday, July 05, 2008 10:03 AM
Subject: [py-dev] py.test --looponfailing started failing on Windows...
I'm stuck with this weird issue. py.test -f has worked perfectly for more
than one month, but yesterday I got my first failure as shown below. The weird
thing is that it restarted worked fine after failing a few times, but this
morning it is impossible to get it working...
Environment: Python 2.5.2 on Windows XP SP3 32 bits and py-0.9.1 install via
setup.py.
Below are the failure output when I start py.test -f, and the debug ouput of
the gateway trace that I enabled. Anyone know how to get useful information
about the remote exception (like source code... to help understand where this
ValueError come from ?)
I tried to run the gateway unit test, but they always get stuck. The strange
thing is that it seems to be depend on how they are started with py.test:
If I starts the test with disabled stdout capture (py.test -v -s) , then the
test remain stuck on:
test_gateway.py:91 TestPopenGateway().test_correct_setup_no_py,
If I starts the test normally (py.test -v), then test run go farther but get
stuck on:
test_gateway.py:405 TestPopenGateway().test_chdir_separation
Gateway debug trace for unit test do not show any ValueError exception...
Unit tests output is at the end of the mail.
Any help to understand where I should add traces in the code to understand
what is going on would be greatly appreciated.
Thanks,
Baptiste.
* The failure:
E:\prg\py\App\sbuilder\build\src\sbuilder\testing>py.test.py -f
* opening PopenGateway: C:\Python25\python.exe
MASTER: initiated slave terminal session ->
MASTER: send start info, topdir=E:\prg\py\App\sbuilder\build\src
Traceback (most recent call last):
File "E:\prg\py\App\sbuilder\build\src\sbuilder\testing\py.test.py", line
4, in <module>
py.test.cmdline.main()
File "c:\Python25\lib\site-packages\py\test\cmdline.py", line 15, in main
failures = session.main()
File "C:\Python25\lib\site-packages\py\test\terminal\remote.py", line 82,
in main
failures = self.run_remote_session(failures)
File "C:\Python25\lib\site-packages\py\test\terminal\remote.py", line 111,
in run_remote_session
return channel.receive()
File "C:\Python25\lib\site-packages\py\execnet\channel.py", line 175, in
receive
raise self._getremoteerror() or EOFError()
EOFError
I enabled the gateway trace I found:
**** execnet-debug-3420:
sending gateway bootstrap code
Channel(3).__del__
sent -> <Message.CHANNEL_LAST_MESSAGE channelid=3 ''>
Channel(5).__del__
sent -> <Message.CHANNEL_LAST_MESSAGE channelid=5 ''>
sent -> <Message.CHANNEL_OPEN channelid=1 len=111>
sent -> <Message.CHANNEL_DATA channelid=1 len=456>
leaving <Thread(receiver, started daemon)>
====================cleaning up====================
Channel(1).__del__
*** execnet-debug-2308
Traceback (most recent call last):
File "<string>", line 359, in _thread_receiver
File "<string>", line 626, in readfrom
ValueError: bad data format
leaving <Thread(receiver, started daemon)>
_servemain finished
====================cleaning up====================
*** Results of running the unit tests for exec_net module
C:\Python25\Lib\site-packages\py\execnet\testing>python
c:\Python25\Lib\site-packages\py\bin\py.test -v
inserting into sys.path: C:\Python25\Lib\site-packages
============================= test process starts
=============================
executable: c:\Python25\python.exe (2.5.2-final-0)
using py lib: C:\Python25\Lib\site-packages\py <rev unknown>
test target: C:\Python25\Lib\site-packages\py\execnet\testing
initial conf 0: C:\Python25\Lib\site-packages\py\test\defaultconftest.pyc
initial conf 1: C:\Python25\Lib\site-packages\py\conftest.pyc
+ testmodule: C:\Python25\Lib\site-packages\py\execnet\testing\test_gateway.py
register.py:20 test_getsource_import_modules[0] ok (0.00)
register.py:20 test_getsource_import_modules[1] ok (0.00)
register.py:20 test_getsource_import_modules[2] ok (0.00)
register.py:20 test_getsource_import_modules[3] ok (0.00)
register.py:20 test_getsource_import_modules[4] ok (0.00)
test_gateway.py:17 test_getsource_no_colision ok (0.00)
test_gateway.py:30 test_stdouterrin_setnull ok (0.02)
test_gateway.py:45 TestMessage().test_wire_protocol ok (0.00)
test_gateway.py:61 TestPureChannel().test_factory_create ok (0.00)
test_gateway.py:67 TestPureChannel().test_factory_getitem ok (0.00)
test_gateway.py:73 TestPureChannel().test_channel_timeouterror ok (0.02)
test_gateway.py:85 TestPopenGateway().test_correct_setup ok (0.08)
test_gateway.py:88 TestPopenGateway().test_repr_doesnt_crash ok (0.00)
test_gateway.py:91 TestPopenGateway().test_correct_setup_no_py ok (0.02)
test_gateway.py:100 TestPopenGateway().test_remote_exec_waitclose ok (0.00)
test_gateway.py:104 TestPopenGateway().test_remote_exec_waitclose_2 ok (0.00)
test_gateway.py:108 TestPopenGateway().test_remote_exec_waitclose_noarg ok
(0.00)
test_gateway.py:112 TestPopenGateway().test_remote_exec_error_after_close ok
(0.00)
test_gateway.py:117 TestPopenGateway().test_remote_exec_channel_anonymous ok
(0.00)
test_gateway.py:126
TestPopenGateway().test_channel_close_and_then_receive_error ok (0.00)
test_gateway.py:130 TestPopenGateway().test_channel_finish_and_then_EOFError
ok (0.00)
test_gateway.py:138
TestPopenGateway().test_channel_close_and_then_receive_error_multiple ok (0.00)
test_gateway.py:144 TestPopenGateway().test_channel__local_close ok (0.00)
test_gateway.py:149 TestPopenGateway().test_channel__local_close_error ok
(0.00)
test_gateway.py:155 TestPopenGateway().test_channel_error_reporting ok (0.00)
test_gateway.py:166 TestPopenGateway().test_channel_syntax_error ok (0.00)
test_gateway.py:175 TestPopenGateway().test_channel_iter ok (0.00)
test_gateway.py:183 TestPopenGateway().test_channel_passing_over_channel ok
(0.00)
test_gateway.py:202 TestPopenGateway().test_channel_receiver_callback ok
(0.00)
test_gateway.py:217 TestPopenGateway().test_channel_callback_after_receive
ok (0.02)
test_gateway.py:233 TestPopenGateway().test_waiting_for_callbacks ok (0.22)
test_gateway.py:245 TestPopenGateway().test_channel_callback_stays_active ok
(0.75)
test_gateway.py:275 TestPopenGateway().test_channel_callback_remote_freed ok
(0.75)
test_gateway.py:279 TestPopenGateway().test_channel_endmarker_callback ok
(0.00)
test_gateway.py:294 TestPopenGateway().test_remote_redirect_stdout ok (0.00)
test_gateway.py:303 TestPopenGateway().test_remote_exec_redirect_multi ok
(0.00)
test_gateway.py:318 TestPopenGateway().test_channel_file ok (0.00)
test_gateway.py:330 TestPopenGateway().test_channel_file_write_error ok
(0.00)
test_gateway.py:336 TestPopenGateway().test_channel_file_proxyclose ok (0.02)
test_gateway.py:347 TestPopenGateway().test_confusion_from_os_write_stdout
ok (0.00)
test_gateway.py:361 TestPopenGateway().test_confusion_from_os_write_stderr
ok (0.00)
test_gateway.py:375 TestPopenGateway().test_non_reverse_execution ok (0.03)
test_gateway.py:405 TestPopenGateway().test_chdir_separation ^C
C:\Python25\Lib\site-packages\py\execnet\testing>
---
Baptiste Lepilleur <[EMAIL PROTECTED]>
------------------------------------------------------------------------------
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