Issue with three inkscape tests on MacOS X

[astrofrog]

When running the tests on MacOS X with various Python/Numpy versions, I am getting the following inkscape-related errors:

======================================================================
ERROR: matplotlib.tests.test_axes.test_arc_ellipse.test
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/Shared/Jenkins/Home/virtualenvs.nose.pil/python2.7-numpy1.6.1/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/Users/Shared/Jenkins/Home/virtualenvs.nose.pil/python2.7-numpy1.6.1/lib/python2.7/site-packages/matplotlib/testing/decorators.py", line 35, in failer
    result = f(*args, **kwargs)
  File "/Users/Shared/Jenkins/Home/virtualenvs.nose.pil/python2.7-numpy1.6.1/lib/python2.7/site-packages/matplotlib/testing/decorators.py", line 117, in do_test
    err = compare_images(expected_fname, actual_fname, self._tol, in_decorator=True)
  File "/Users/Shared/Jenkins/Home/virtualenvs.nose.pil/python2.7-numpy1.6.1/lib/python2.7/site-packages/matplotlib/testing/compare.py", line 215, in compare_images
    actual = convert(actual)
  File "/Users/Shared/Jenkins/Home/virtualenvs.nose.pil/python2.7-numpy1.6.1/lib/python2.7/site-packages/matplotlib/testing/compare.py", line 139, in convert
    converter[extension](filename, newname)
  File "/Users/Shared/Jenkins/Home/virtualenvs.nose.pil/python2.7-numpy1.6.1/lib/python2.7/site-packages/matplotlib/testing/compare.py", line 99, in convert
    raise IOError, msg
IOError: Conversion command failed:
inkscape -z /Users/Shared/Jenkins/Home/jobs/matplotlib-mdboom-tests-osx-10.7-multiconfig/workspace/NV/1.6.1/PV/2.7/result_images/test_axes/arc_ellipse.svg --export-png /Users/Shared/Jenkins/Home/jobs/matplotlib-mdboom-tests-osx-10.7-multiconfig/workspace/NV/1.6.1/PV/2.7/result_images/test_axes/arc_ellipse_svg.png
Standard output:
Background RRGGBBAA: ffffff00
Area 0:0:720:540 exported to 720 x 540 pixels (90 dpi)
Bitmap saved as: /Users/Shared/Jenkins/Home/jobs/matplotlib-mdboom-tests-osx-10.7-multiconfig/workspace/NV/1.6.1/PV/2.7/result_images/test_axes/arc_ellipse_svg.png

Standard error:

(process:19741): Gtk-WARNING **: Locale not supported by C library.
    Using the fallback 'C' locale.

Emergency save activated!
Emergency save completed. Inkscape will close now.
If you can reproduce this crash, please file a bug at www.inkscape.org
with a detailed description of the steps leading to the crash, so we can fix it.
** Message: Error: Inkscape encountered an internal error and will close now.




======================================================================
ERROR: matplotlib.tests.test_axes.test_fill_between_interpolate.test
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/Shared/Jenkins/Home/virtualenvs.nose.pil/python2.7-numpy1.6.1/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/Users/Shared/Jenkins/Home/virtualenvs.nose.pil/python2.7-numpy1.6.1/lib/python2.7/site-packages/matplotlib/testing/decorators.py", line 35, in failer
    result = f(*args, **kwargs)
  File "/Users/Shared/Jenkins/Home/virtualenvs.nose.pil/python2.7-numpy1.6.1/lib/python2.7/site-packages/matplotlib/testing/decorators.py", line 117, in do_test
    err = compare_images(expected_fname, actual_fname, self._tol, in_decorator=True)
  File "/Users/Shared/Jenkins/Home/virtualenvs.nose.pil/python2.7-numpy1.6.1/lib/python2.7/site-packages/matplotlib/testing/compare.py", line 215, in compare_images
    actual = convert(actual)
  File "/Users/Shared/Jenkins/Home/virtualenvs.nose.pil/python2.7-numpy1.6.1/lib/python2.7/site-packages/matplotlib/testing/compare.py", line 139, in convert
    converter[extension](filename, newname)
  File "/Users/Shared/Jenkins/Home/virtualenvs.nose.pil/python2.7-numpy1.6.1/lib/python2.7/site-packages/matplotlib/testing/compare.py", line 99, in convert
    raise IOError, msg
IOError: Conversion command failed:
inkscape -z /Users/Shared/Jenkins/Home/jobs/matplotlib-mdboom-tests-osx-10.7-multiconfig/workspace/NV/1.6.1/PV/2.7/result_images/test_axes/fill_between_interpolate.svg --export-png /Users/Shared/Jenkins/Home/jobs/matplotlib-mdboom-tests-osx-10.7-multiconfig/workspace/NV/1.6.1/PV/2.7/result_images/test_axes/fill_between_interpolate_svg.png
Standard output:
Background RRGGBBAA: ffffff00
Area 0:0:720:540 exported to 720 x 540 pixels (90 dpi)
Bitmap saved as: /Users/Shared/Jenkins/Home/jobs/matplotlib-mdboom-tests-osx-10.7-multiconfig/workspace/NV/1.6.1/PV/2.7/result_images/test_axes/fill_between_interpolate_svg.png

Standard error:

(process:20043): Gtk-WARNING **: Locale not supported by C library.
    Using the fallback 'C' locale.

Emergency save activated!
Emergency save completed. Inkscape will close now.
If you can reproduce this crash, please file a bug at www.inkscape.org
with a detailed description of the steps leading to the crash, so we can fix it.
** Message: Error: Inkscape encountered an internal error and will close now.

The other SVG tests pass. Does this look like an issue with my inkscape installation? I installed it using MacPorts:

$ inkscape --version
Inkscape 0.48.2 r9819 (Mar 20 2012)

[mdboom]

Not sure what's going on here, and the error output from inkscape isn't very illuminating. (FWIW, I am running inkscape 0.48.1 on Linux with no problems). I think we need to consider these inkscape bugs unless otherwise proven wrong. Do you perhaps want to take the input files and report upstream?

[astrofrog]

Ok, I'll try and follow up on this. This should not hold up the release candidate.

[astrofrog]

I have filed a bug report with the inkscape developers: https://bugs.launchpad.net/inkscape/+bug/962941

[pelson]

FYI I am not seeing this issue on OSX 10.7 with inkscape installed via homebrew (Inkscape 0.48.3.1 r9886 (Jun 25 2012)).

[dmcdougall]

I can't recreate this on OS X 10.8 with inkscape installed via MacPorts:

$ inkscape --version
Inkscape 0.48.4 r9939 (Jul  3 2013)

All of the test_axes module passes, so I'm going to close this now.

[mdboom]

Yes -- seems to be an inkscape installation/environmental bug that we can't really workaround here.