id summary reporter owner description type status priority milestone component resolution keywords cc branch branch_author launchpad_bug 4352 twisted.test.test_process.ProcessTestCase.testStdio and pollreactor don't get along exarkun "If the helper program used by `testStdio` is changed to use pollreactor: {{{ Index: twisted/test/process_twisted.py =================================================================== --- twisted/test/process_twisted.py (revision 28664) +++ twisted/test/process_twisted.py (working copy) @@ -10,6 +10,8 @@ sys.path.insert(0, os.curdir) ### end of preamble +from twisted.internet import pollreactor +pollreactor.install() from twisted.python import log from zope.interface import implements }}} then the test fails: {{{ =============================================================================== [FAIL]: twisted.test.test_process.ProcessTestCase.testStdio Traceback (most recent call last): File ""/home/exarkun/Projects/Twisted/trunk/twisted/test/test_process.py"", line 501, in processEnded ""%s\n"" % (p.outF.getvalue(), p.errF.getvalue())) twisted.trial.unittest.FailTest: Output follows: Error message from process_twisted follows: 2010-03-05 22:46:52-0500 [-] Log opened. 2010-03-05 22:46:52-0500 [-] connection made 2010-03-05 22:46:52-0500 [-] connectionLost [Failure instance: Traceback (failure with no frames): : Connection to the other side was lost in a non-clean fashion. 2010-03-05 22:46:52-0500 [-] ] 2010-03-05 22:46:52-0500 [-] Main loop terminated. not equal: a = '' b = 'hello, worldabc123' ------------------------------------------------------------------------------- }}} The child receives the bytes written to it, but apparently it shuts down the reactor too quickly and the parent process never receives the results. I'm not sure if this is just a test bug or if it's actually a misbehavior of the reactor. The failing test is blocking #2234, though, which aims to make poll the default reactor on some platforms. " defect closed normal core fixed jknight branches/poll-stdio-halfclose-4352 exarkun