[Scipy-svn] r7055 - trunk/scipy/optimize/tests

[scipy-svn at scipy.org]

Author: rgommers
Date: 2011-01-16 02:14:24 -0600 (Sun, 16 Jan 2011)
New Revision: 7055

Modified:
   trunk/scipy/optimize/tests/test_linesearch.py
Log:
TST: fix test failure of line_search_wolfe1/2 on win32 with Python 2.7/3.1

The issue was numerical precision when comparing two float arrays. Largest
difference between actual and desired first derivate arrays was 3.5e-15.

Modified: trunk/scipy/optimize/tests/test_linesearch.py
===================================================================
--- trunk/scipy/optimize/tests/test_linesearch.py	2011-01-15 15:28:05 UTC (rev 7054)
+++ trunk/scipy/optimize/tests/test_linesearch.py	2011-01-16 08:14:24 UTC (rev 7055)
@@ -2,7 +2,7 @@
 Tests for line search routines
 """
 
-from numpy.testing import assert_, assert_equal
+from numpy.testing import assert_, assert_equal, assert_array_almost_equal
 import scipy.optimize.linesearch as ls
 import numpy as np
 
@@ -82,7 +82,7 @@
         def bind_index(func, idx):
             # Remember Python's closure semantics!
             return lambda *a, **kw: func(*a, **kw)[idx]
-        
+
         for name in sorted(dir(self)):
             if name.startswith('_scalar_func_'):
                 value = getattr(self, name)
@@ -162,7 +162,7 @@
             if s is None:
                 continue
             assert_equal(fv, f(x + s*p))
-            assert_equal(gv, fprime(x + s*p))
+            assert_array_almost_equal(gv, fprime(x + s*p), decimal=14)
             if s < smax:
                 c += 1
                 assert_line_wolfe(x, p, s, f, fprime, err_msg=name)
@@ -183,7 +183,7 @@
             assert_equal(ofv, f(x))
             assert_equal(fv, f(x + s*p))
             if gv is not None:
-                assert_equal(gv, fprime(x + s*p))
+                assert_array_almost_equal(gv, fprime(x + s*p), decimal=14)
             if s < smax:
                 c += 1
                 assert_line_wolfe(x, p, s, f, fprime, err_msg=name)