Test02_DataCam12DSpectral failing randomly on mac os X

[lasofivec]

Since trying the deployment in OSX platforms, from time to time I get the following test failing.
Not sure why/how, I will investigate this more when the deployment branch is done.
If in the mean time this rings a bell (@Didou09) I would gladly appreciate the help.

ERROR: test suite for <class 'tofu.tests.tests02_data.tests03_core.Test02_DataCam12DSpectral'>

Traceback (most recent call last):
File "/Users/travis/miniconda/lib/python3.7/site-packages/nose/suite.py", line 210, in run
self.setUp()
File "/Users/travis/miniconda/lib/python3.7/site-packages/nose/suite.py", line 293, in setUp
self.setupContext(ancestor)
File "/Users/travis/miniconda/lib/python3.7/site-packages/nose/suite.py", line 316, in setupContext
try_run(context, names)
File "/Users/travis/miniconda/lib/python3.7/site-packages/nose/util.py", line 470, in try_run
return func()
File "/Users/travis/build/ToFuProject/tofu/tofu/tests/tests02_data/tests03_core.py", line 432, in setup_class
conf1 = tfg.utils.create_config(case='B3')
File "/Users/travis/build/ToFuProject/tofu/tofu/geom/utils.py", line 831, in create_config
returnas=returnas, path=path)
File "/Users/travis/build/ToFuProject/tofu/tofu/geom/utils.py", line 748, in _create_config_testcase
out=returnas)
File "/Users/travis/build/ToFuProject/tofu/tofu/geom/_core.py", line 1728, in from_txt
color=color,
File "/Users/travis/build/ToFuProject/tofu/tofu/geom/_core.py", line 218, in init
super(Struct, self).init(**kwdargs)
File "/Users/travis/build/ToFuProject/tofu/tofu/utils.py", line 1388, in init
self._init(**kwdargs)
File "/Users/travis/build/ToFuProject/tofu/tofu/geom/_core.py", line 603, in _init
self._set_dgeom(**kwdgeom)
File "/Users/travis/build/ToFuProject/tofu/tofu/geom/_core.py", line 642, in _set_dgeom
Clock=Clock,
File "/Users/travis/build/ToFuProject/tofu/tofu/geom/_comp.py", line 66, in _Struct_set_Poly
assert Vol > 0.0, msg
AssertionError: Pb. with volume computation for Ves object of type 'Tor' !

[Didou09]

This is a safety test checking that the volume of the torus is > 0.
If it fails it means that it may be negative, which could indicate a clock-wise (instead of counter-clockwise) polygon.
Or the volume is 0 or nan for some reason.

But it is strange that it happens only on Mac and randomly. If there was a systematic error we should have seen it earlier.

Could you try a step-by-step debugging on a Mac ? Maybe identify the polygon and see if the volume could be very small (i.e. below rounding errors ?)

[lasofivec]

it has never happened on my mac, I have trie a couple of times. But it's hard to say if it hasn't happened because it will not happen or if I just haven't tried enough times :)
Will let you know asap

[lasofivec]

Looks that it was coming from Poly_isClockwise (in GG):

• The modulo operator in Cython doesn't give the right results when @cython.cdvision(True) is set.

[Didou09]

Fixed, in devel, by PR #323