UnicodeDecodeError and failed test_multiline.test

[xiaoweiz]

Just updated to 1.4.1 through Anaconda in OS X Mavericks

Running the test suite yields 1 error and 2 failures:

Python 2.7.8 |Continuum Analytics, Inc.| (default, Aug 21 2014, 15:21:46)
Type "copyright", "credits" or "license" for more information.

IPython 2.3.0 -- An enhanced Interactive Python.
Anaconda is brought to you by Continuum Analytics.
Please check out: http://continuum.io/thanks and https://binstar.org
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: import matplotlib as mpl

In [2]: mpl.test()
...KKKKKK...K..K.....K....K..K..K..K..K..K..K.............................K..K..K..K....K..K..K..K..K..K..K...K..K..K..K..K..K....K..K..K..K..K..K..K..K..K..K.....K.........K..K..K......K..K..K..K..K..K..K..K..K..K...K........K..K..K..K..K..K..K..K..K..K....K..K..K..K..............K..K..K..K..K..K..K....K.....................................K..........................K..K...K...K..K..K..K......................K..K..K..K..K..K..K..K..K..K..K..K..K..................................../Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/colors.py:1535: RuntimeWarning: invalid value encountered in true_divide
  (intensity.max() - intensity.min())
/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/colors.py:1543: RuntimeWarning: invalid value encountered in greater
  intensity > 0),
/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/colors.py:1548: RuntimeWarning: invalid value encountered in greater
  hsv[:, :, 2] = np.where(intensity > 0,
/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/colors.py:1554: RuntimeWarning: invalid value encountered in less
  intensity < 0),
/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/colors.py:1558: RuntimeWarning: invalid value encountered in less
  hsv[:, :, 2] = np.where(intensity < 0,
.........K./Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/text.py:52: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
  if rotation in ('horizontal', None):
/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/text.py:54: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
  elif rotation == 'vertical':
.......................................................................................K..K..K...........K..K..K..K..K.K..K.K..K.K..............K..K..K..K..K..K..K..K..K...K..........................................................................................................................................................................................K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K..K........................................................................................../Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/mlab.py:3742: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
  elif bw_method == 'scott':
/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/mlab.py:3744: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
  elif bw_method == 'silverman':
............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................../Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/tri/triangulation.py:110: FutureWarning: comparison to `None` will result in an elementwise object comparison in the future.
  self._neighbors)
.K..K..K..K..K........K..K..K..K...................KK.................................................K...K..K..K..K..K..K..K..K..K......K..K..K..K..K..K.......K.......K...EFFK..K...........K..K..K..K..K..K..K..K.................K................./Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/tri/triangulation.py:212: FutureWarning: comparison to `None` will result in an elementwise object comparison in the future.
  self._cpp_triangulation.set_mask(self.mask)
............K..K./Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_pdf.py:2264: FutureWarning: comparison to `None` will result in an elementwise object comparison in the future.
  different = bool(ours != theirs)
.K..K..K..K..K..K..K..K..K..K..K
======================================================================
ERROR: test suite for <class 'matplotlib.tests.test_text.test_font_styles'>
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/nose/suite.py", line 209, in run
    self.setUp()
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/nose/suite.py", line 292, in setUp
    self.setupContext(ancestor)
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/nose/suite.py", line 315, in setupContext
    try_run(context, names)
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/nose/util.py", line 470, in try_run
    return func()
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/testing/decorators.py", line 134, in setup_class
    cls._func()
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/tests/test_text.py", line 45, in test_font_styles
    size=14,
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/tests/test_text.py", line 21, in find_matplotlib_font
    path = findfont(prop, directory=data_path)
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/font_manager.py", line 1418, in findfont
    font = fontManager.findfont(prop, **kw)
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/font_manager.py", line 1258, in findfont
    os.path.commonprefix([font.fname, directory]) != directory):
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/genericpath.py", line 71, in commonprefix
    s1 = min(m)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe9 in position 15: ordinal not in range(128)

======================================================================
FAIL: matplotlib.tests.test_text.test_multiline.test
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/testing/decorators.py", line 51, in failer
    result = f(*args, **kwargs)
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/testing/decorators.py", line 196, in do_test
    '(RMS %(rms).3f)'%err)
ImageComparisonFailure: images not close: /Users/zhangxiaowei/Downloads/result_images/test_text/multiline.png vs. /Users/zhangxiaowei/Downloads/result_images/test_text/multiline-expected.png (RMS 27.663)

======================================================================
FAIL: matplotlib.tests.test_text.test_multiline.test
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/testing/decorators.py", line 51, in failer
    result = f(*args, **kwargs)
  File "/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/testing/decorators.py", line 196, in do_test
    '(RMS %(rms).3f)'%err)
ImageComparisonFailure: images not close: /Users/zhangxiaowei/Downloads/result_images/test_text/multiline_pdf.png vs. /Users/zhangxiaowei/Downloads/result_images/test_text/multiline-expected_pdf.png (RMS 35.875)

----------------------------------------------------------------------
Ran 4745 tests in 449.966s

FAILED (KNOWNFAIL=382, errors=1, failures=2)
/Users/zhangxiaowei/anaconda/lib/python2.7/site-packages/matplotlib/__init__.py:1312: UserWarning:  This call to matplotlib.use() has no effect
because the backend has already been chosen;
matplotlib.use() must be called *before* pylab, matplotlib.pyplot,
or matplotlib.backends is imported for the first time.

  warnings.warn(_use_error_msg)
Out[2]: False

[tacaswell]

Could you post the generated images?

For the unicode issue can you try deleting your font-cache (~/.config/matplotlib/fontcache.something)?

[xiaoweiz]

There isn't a matplotlib directory inside ~/.config.

Here are the images:

• Failure 1:
  result_images/test_text/multiline.png

result_images/test_text/multiline-expected.png
  
• Failure 2:
  result_images/test_text/multiline_pdf.png
  

result_images/test_text/multiline-expected_pdf.png

[xiaoweiz]

Another update:
I also run the test suite on a Linux machine (Xubuntu 14.04) and the test is successful without any error or failure.

[tacaswell]

@xiaoweiz Can you look at what ever folder matplotlib.get_cachedir() points to and remove any font cache in it?

I would really like to track down that unicode issue.

It looks like we are missing an @cleanup someplace and the tests got crossed. Is that failure reproducible?

[xiaoweiz]

After I removed the font cache, the test suite is now successful (with 383 known failures).

[tacaswell]

Great, closing this as the problem was transient.

I assume you have font paths with non ascii characters it them?

[xiaoweiz]

I'm not sure whether I have non ascii characters in font paths.... But glad the problem is solved.