unittest ValueError

[Chris Fonnesbeck]

I have built the following unit test, observing the examples laid out
in the python docs:

class testMCMC(unitte st.TestCase):

def setUp(self):

# Create an instance of the sampler
self.sampler = DisasterSampler ()

def testCoalMiningD isasters(self):
"""Run coal mining disasters example sampler"""

print 'Running coal mining disasters test case ...'

# Specify the nimber of iterations to execute
iterations = 10000
thin = 2
burn = 5000
chains = 2

# Run MCMC simulation
for i in range(chains):

self.failUnless (self.sampler.s ample(iteration s, burn=burn,
thin=thin, plot=True))

# Run convergence diagnostics
self.sampler.co nvergence()

# Plot autocorrelation
self.sampler.au tocorrelation()

# Goodness of fit
self.failIf(sel f.sampler.goodn ess(iterations/10)['overall'] < 0.05)


def test():
# Run unit tests
unittest.main()

However, when I run test() from the python shell, it dies:

In [2]: test()

----------------------------------------------------------------------
Ran 0 tests in 0.000s

OK
---------------------------------------------------------------------------
exceptions.Syst emExit Traceback (most
recent call last)

/Users/chris/<ipython console>

/Library/Frameworks/Python.framewor k/Versions/2.4/lib/python2.4/site-packages/PyMC/MCMC.py
in test()
2986
2987 def test():
2988 # Run unit tests
-2989 unittest.main()
global unittest.main = <class 'unittest.TestP rogram'>
2990

/Library/Frameworks/Python.framewor k/Versions/2.4/lib/python2.4/unittest.py
in __init__(self=< unittest.TestPr ogram object at 0x10e6c10>,
module='__main_ _', defaultTest=Non e, argv=['/usr/local/bin/ipython'],
testRunner=None , testLoader=<uni ttest.TestLoade r object at 0x5feb30>)
757 self.progName = os.path.basenam e(argv[0])
758 self.parseArgs( argv)
--759 self.runTests()
self.runTests = <bound method TestProgram.run Tests of
<unittest.TestP rogram object at 0x10e6c10>>
760
761 def usageExit(self, msg=None):

/Library/Frameworks/Python.framewor k/Versions/2.4/lib/python2.4/unittest.py
in runTests(self=< unittest.TestPr ogram object at 0x10e6c10>)
795 self.testRunner = TextTestRunner( verbosity=self. verbosity)
796 result = self.testRunner .run(self.test)
--797 sys.exit(not result.wasSucce ssful())
global sys.exit = <built-in function exit>
result.wasSucce ssful = <bound method
_TextTestResult .wasSuccessful of <unittest._Text TestResult run=0
errors=0 failures=0>>
798
799 main = TestProgram

SystemExit: False
Type exit or quit to exit IPython (%Exit or %Quit do so unconditionally ).

In [3]: from PyMC import testMCMC

In [4]: foo = testMCMC()
---------------------------------------------------------------------------
exceptions.Valu eError Traceback (most
recent call last)

/Users/chris/<ipython console>

/Library/Frameworks/Python.framewor k/Versions/2.4/lib/python2.4/unittest.py
in __init__(self=< PyMC.MCMC.testM CMC testMethod=runT est>,
methodName='run Test')
206 self.__testMeth odDoc = testMethod.__do c__
207 except AttributeError:
--208 raise ValueError, "no such test method in %s: %s" % \
global ValueError = undefined
self.__class__ = <class 'PyMC.MCMC.test MCMC'>
methodName = 'runTest'
209 (self.__class__ , methodName)
210

ValueError: no such test method in <class 'PyMC.MCMC.test MCMC'>: runTest


I have no idea why this is happening. My TestCase class begins with
"test", the method begins with "test", yet no tests are seen. Also, I
do not get the runTest ValueError. I assumed that you get this method
for free win TestCase. The examples certainly do not have this method,
so I am not sure what the problem is.

Thanks for any help,
--
Chris Fonnesbeck + Atlanta, GA + http://trichech.us