[NumPy-Tickets] [NumPy] #1825: assert_array_less behavior with inf/nan

[NumPy Trac]

#1825: assert_array_less behavior with inf/nan
---------------------------+------------------------------------------------
 Reporter:  rgommers       |       Owner:  somebody   
     Type:  defect         |      Status:  new        
 Priority:  normal         |   Milestone:  Unscheduled
Component:  numpy.testing  |     Version:  devel      
 Keywords:                 |  
---------------------------+------------------------------------------------

Comment(by warren.weckesser):

 Adding to Ralf's description: the second of the two examples that
 previously passed comes from a test in scipy that is now failing:
 {{{
 ======================================================================
 FAIL: test_expon (test_morestats.TestAnderson)
 ----------------------------------------------------------------------
 Traceback (most recent call last):
   File "/Users/warren/local_scipy/lib/python2.7/site-
 packages/scipy/stats/tests/test_morestats.py", line 72, in test_expon
     assert_array_less(crit[:-1], A)
   File "/Library/Frameworks/Python.framework/Versions/7.1/lib/python2.7
 /site-packages/numpy/testing/utils.py", line 869, in assert_array_less
     header='Arrays are not less-ordered')
   File "/Library/Frameworks/Python.framework/Versions/7.1/lib/python2.7
 /site-packages/numpy/testing/utils.py", line 613, in assert_array_compare
     chk_same_position(x_id, y_id, hasval='inf')
   File "/Library/Frameworks/Python.framework/Versions/7.1/lib/python2.7
 /site-packages/numpy/testing/utils.py", line 588, in chk_same_position
     raise AssertionError(msg)
 AssertionError:
 Arrays are not less-ordered

 x and y inf location mismatch:
  x: array([ 0.911,  1.065,  1.325,  1.587])
  y: array(inf)

 ----------------------------------------------------------------------

 }}}

-- 
Ticket URL: <http://projects.scipy.org/numpy/ticket/1825#comment:1>
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