launchpad-dev team mailing list archive

[Maris Fogels <maris.fogels@xxxxxxxxxxxxx>]

Hi everyone,

ec2 is once again running the Windmill test suite.  The test suite hangs were 
being caused by a cascade of failures through the test infrastructure.  I have 
fixed the root cause, and have other branches queued up to address additional 
failure points.

You may see messages like this in your test summary output:

ERROR DISABLED: Test left new live threads: [<Thread(Thread-1633, started daemon)>]
======================================================================
ERROR: lp.bugs.windmill.tests.test_bug_me_too.TestMeToo.test_me_too 
(subunit.RemotedTestCase)
----------------------------------------------------------------------
_StringException: Text attachment: garbage
------------
[<Thread(Thread-1633, started daemon)>]
------------

You can ignore them, just as the test suite does.  The suite will still pass.


FWIW, windmill was not the culprit here: zope.testing was the source.  Windmill 
starts a Python BaseHTTPServer in a new thread to do its work.  That thread 
races to shut down before the test cleanup finds it.  If if loses the race, the 
testrunner will print "Test left behind new threads" in a benign message. 
Unfortunately, zope.testing itself would hang attempting to print the "Test left 
new threads" message, starting the cascade.

A quick update on ec2test returning false SUCCESS messages: I have found what I 
believe to be the root of the problem, and have a patch pending that should fix 
it.  I will update everyone again when it lands.


Maris