normalize name of python executable

src/z3c/recipe/compattest/testing.py

@@ -8,12 +8,15 @@
     re.compile('(\n?)-  ([a-zA-Z0-9_.-]+)-script.py\n-  \\2.exe\n'),
     '\\1-  \\2\n')
 
-# Distribute does not result in a setuptools compattest binary, so filter that
-# out.
+# Distribute does not result in a setuptools compattest binary, so filter
+# that out.
 normalize_setuptools = (
     re.compile('-  compattest-setuptools'),
     '')
 
+# On windows and OS X the name of the python executable starts with a
+# capital 'P'. On linux it does not.
+python_case_normalizer = (re.compile('[pP]ython'), 'python')
 
 def DocFileSuite(*args, **kw):
     def setUp(test):
@@ -42,6 +45,7 @@ def tearDown(test):
         zc.buildout.testing.normalize_path,
         normalize_script,
         normalize_setuptools,
+        python_case_normalizer,
         ])
 
     return doctest.DocFileSuite(*args, **kw)

src/z3c/recipe/compattest/tests.py

@@ -1,5 +1,6 @@
+import re
 import z3c.recipe.compattest.testing
-
+from zope.testing import renormalizing
 
 def test_suite():
     return z3c.recipe.compattest.testing.DocFileSuite(