bob.ip.facedetect fails the test for Python 2.7 conda build

[Amir Mohammadi]

The tests fail on Python 2.7 but pass on Python 3.5.
Python 2.7: https://travis-ci.org/bioidiap/bob.conda/jobs/112149880
Python 3.5: https://travis-ci.org/bioidiap/bob.conda/jobs/112149881

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FAIL: bob.ip.facedetect.tests.test_scripts.test_training

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Traceback (most recent call last):

 File "/home/travis/miniconda/envs/_test/lib/python2.7/site-packages/nose/case.py", line 197, in runTest

   self.test(*self.arg)

 File "/home/travis/miniconda/envs/_test/lib/python2.7/site-packages/bob.ip.facedetect-2.0.4-py2.7-linux-x86_64.egg/bob/ip/facedetect/tests/test_scripts.py", line 133, in test_training

   assert os.path.exists(cascade_file)

AssertionError

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FAIL: bob.ip.facedetect.tests.test_scripts.test_detection

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Traceback (most recent call last):

 File "/home/travis/miniconda/envs/_test/lib/python2.7/site-packages/nose/case.py", line 197, in runTest

   self.test(*self.arg)

 File "/home/travis/miniconda/envs/_test/lib/python2.7/site-packages/bob.ip.facedetect-2.0.4-py2.7-linux-x86_64.egg/bob/ip/facedetect/tests/test_scripts.py", line 147, in test_detection

   assert os.path.exists(cascade_file)

AssertionError

[Manuel Günther]

I don't really see, why it is not working with py27. Maybe you can replace the command line in subprocess.call(command, stdout=devnull),

https://github.com/bioidiap/bob.ip.facedetect/blob/master/bob/ip/facedetect/tests/test_scripts.py#L41

to subprocess.call(command), so that the output of the script is not suppressed. Hopefully this given more insight on which of the steps do not work.

The second test failing is just a result of the first step failing, as these tests depend on each other.

[Amir Mohammadi]

This was an mkl issue related to conda.
They are going to release conda 4.0 next week which will take care of these mkl issues.
I added a temporary fix.