[svn r63932] * Fixed broken setup_method()-mechanism.
* Added --twisted-logging option. * Added example test-script to the plugin-test. --HG-- branch : trunk
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mzeidler
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0b554bf925
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59bd09ce9a
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@ -1,15 +1,16 @@
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"""
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Notes: twisted's asynchrone behavior may have influence on the order of test-functions
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TODO:
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+ switching on this plugin breaks 'setup_method' mechanism which then is not previously called before the test function.
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+ credits to Ralf Schmitt See: http://twistedmatrix.com/pipermail/twisted-python/2007-February/014872.html
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+ add option for twisted logging
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+ write tests
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+ get test to work
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"""
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import os
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import sys
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import py
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try:
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from twisted.internet.defer import Deferred
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except ImportError:
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@ -22,10 +23,10 @@ except ImportError:
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"http://pypi.python.org/pypi/greenlet"
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sys.exit(0)
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DIR_CUR = str(py.path.local())
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def _start_twisted_logging():
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"""Enables twisted internal logging"""
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class Logger(object):
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"""late-bound sys.stdout"""
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def write(self, msg):
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@ -34,31 +35,38 @@ def _start_twisted_logging():
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def flush(self):
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sys.stdout.flush()
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# sys.stdout will be changed by py.test later.
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import twisted.python.log
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twisted.python.log.startLogging(Logger(), setStdout=0)
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def _run_twisted():
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"""greenlet: run twisted mainloop"""
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def _run_twisted(logging=False):
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"""Start twisted mainloop and initialize recursive calling of doit()."""
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from twisted.internet import reactor, defer
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from twisted.python import log, failure
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failure.Failure.cleanFailure = lambda *args: None # make twisted copy traceback...
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_start_twisted_logging() # XXX: add py.test option
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def doit(val):
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# make twisted copy traceback...
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failure.Failure.cleanFailure = lambda *args: None
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if logging:
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_start_twisted_logging()
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# recursively called for each test-function/method due done()
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def doit(val): # val always None
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# switch context to wait that wrapper() passes back to test-method
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res = gr_tests.switch(val)
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if res is None:
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reactor.stop()
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return
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def done(res):
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reactor.callLater(0.0, doit, None)
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reactor.callLater(0.0, doit, None) # recursive call of doit()
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def err(res):
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reactor.callLater(0.0, doit, res)
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# the test-function *may* return a deferred
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# here the test-function will actually been called
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# done() is finalizing a test-process by assureing recursive envoking
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# of doit()
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defer.maybeDeferred(res).addCallback(done).addErrback(err)
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# initialy preparing the calling of doit() and starting the reactor
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reactor.callLater(0.0, doit, None)
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reactor.run()
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@ -67,27 +75,42 @@ class TwistedPlugin:
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"""Allows to test twisted applications with pytest."""
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def pytest_addoption(self, parser):
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parser.addoption("--twisted", dest="twisted",
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help="Allows to test twisted applications with pytest.")
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#parser.addoption("--twisted", dest="twisted",
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# help="Allows to test twisted applications with pytest.")
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group = parser.addgroup('twisted options')
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group.addoption('-T', action='store_true', default=False,
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dest = 'twisted',
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help="Allows to test twisted applications.")
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group.addoption('--twisted-logging', action='store', default=False,
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dest='twisted_logging',
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help="switch on twisted internal logging")
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self.twisted = False
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def pytest_configure(self, config):
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twisted = config.getvalue("twisted")
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twisted = config.getvalue("twisted")
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twisted_logging = config.getvalue("twisted_logging")
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if twisted:
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print "Twisted plugin switched on"
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gr_twisted.switch()
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self.twisted = True
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gr_twisted.switch(twisted_logging)
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def pytest_unconfigure(self, config):
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gr_twisted.switch(None)
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if self.twisted:
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gr_twisted.switch(None)
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def pytest_pyfunc_call(self, pyfuncitem, *args, **kwargs):
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def wrapper(func):
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res = func.obj()
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if isinstance(res, Deferred):
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res = gr_twisted.switch(func.obj)
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if res:
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res.raiseException()
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return res
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pyfuncitem = wrapper(pyfuncitem)
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if self.twisted:
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def wrapper(func):
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"""
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wrapper just to pass back (injecting) the test-function into
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doit() by using a greenlet switch.
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"""
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if hasattr(func, 'obj'):
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# XXX: what about **kwargs?
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res = gr_twisted.switch(lambda: func.obj(*args))
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if res:
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res.raiseException()
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pyfuncitem = wrapper(pyfuncitem)
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gr_twisted = greenlet(_run_twisted)
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@ -97,19 +120,87 @@ gr_tests = greenlet.getcurrent()
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# plugin tests
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# ===============================================================================
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# XXX: write test
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'''
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def test_generic(plugintester):
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plugintester.apicheck(EventlogPlugin)
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plugintester.apicheck(TwistedPlugin)
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testdir = plugintester.testdir()
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testdir.makepyfile("""
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testdir.makepyfile('''
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def test_pass():
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pass
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""")
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testdir.runpytest("--twisted")
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s = testdir.tmpdir.join("event.log").read()
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assert s.find("TestrunStart") != -1
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assert s.find("ItemTestReport") != -1
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assert s.find("TestrunFinish") != -1
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'''
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from twisted.internet import defer, reactor
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from twisted.python import failure
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from twisted.python import log
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def test_no_deferred():
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assert True is True
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def test_deferred():
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log.msg("test_deferred() called")
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d = defer.Deferred()
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def done():
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log.msg("test_deferred.done() CALLBACK DONE")
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d.callback(None)
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reactor.callLater(2.5, done)
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log.msg("test_deferred() returning deferred: %r" % (d,))
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return d
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def test_deferred2():
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log.msg("test_deferred2() called")
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d = defer.Deferred()
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def done():
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log.msg("test_deferred2.done() CALLBACK DONE")
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d.callback(None)
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reactor.callLater(2.5, done)
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log.msg("test_deferred2() returning deferred: %r" % (d,))
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return d
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def test_deferred4():
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log.msg("test_deferred4() called")
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from twisted.web.client import getPage
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def printContents(contents):
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assert contents == ""
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deferred = getPage('http://twistedmatrix.com/')
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deferred.addCallback(printContents)
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return deferred
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def test_deferred3():
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log.msg("test_deferred3() called")
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d = defer.Deferred()
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def done():
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log.msg("test_deferred3.done() CALLBACK DONE")
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d.callback(None)
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reactor.callLater(2.5, done)
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log.msg("test_deferred3() returning deferred: %r" % (d,))
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return d
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class TestTwistedSetupMethod:
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def setup_method(self, method):
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log.msg("TestTwistedSetupMethod.setup_method() called")
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def test_deferred(self):
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log.msg("TestTwistedSetupMethod.test_deferred() called")
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d = defer.Deferred()
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def done():
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log.msg("TestTwistedSetupMethod.test_deferred() CALLBACK DONE")
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d.callback(None)
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reactor.callLater(2.5, done)
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log.msg("TestTwistedSetupMethod.test_deferred() returning deferred: %r" % (d,))
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return d
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def test_defer_fail():
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def fun():
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log.msg("provoking NameError")
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rsdfg
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return defer.maybeDeferred(fun)
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''')
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testdir.runpytest("-T")
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# XXX: what to do?
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# s = testdir.tmpdir.join("event.log").read()
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# assert s.find("TestrunFinish") != -1
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