[Python-checkins] r69013 - python/branches/py3k/Lib/test/test_itertools.py

[raymond.hettinger]

Author: raymond.hettinger
Date: Tue Jan 27 10:56:30 2009
New Revision: 69013

Log:
Stronger tests for combinatoric relationships.

Modified:
   python/branches/py3k/Lib/test/test_itertools.py

Modified: python/branches/py3k/Lib/test/test_itertools.py
==============================================================================
--- python/branches/py3k/Lib/test/test_itertools.py	(original)
+++ python/branches/py3k/Lib/test/test_itertools.py	Tue Jan 27 10:56:30 2009
@@ -285,11 +285,15 @@
             perm = list(permutations(s, r))
             comb = list(combinations(s, r))
 
+            self.assertEquals(len(prod), len(s)**r)
+            self.assertEquals(prod, sorted(set(prod)))                      # prod in lexicographic order without repeats
             self.assertEquals(cwr, [t for t in prod if sorted(t)==list(t)]) # cwr: prods which are sorted
             self.assertEquals(perm, [t for t in prod if len(set(t))==r])    # perm: prods with no dups
             self.assertEqual(comb, [t for t in perm if sorted(t)==list(t)]) # comb: perms that are sorted
             self.assertEqual(comb, [t for t in cwr if len(set(t))==r])      # comb: cwrs without dups
-            self.assertEqual(set(comb), set(cwr) & set(perm))               # comb: both a cwr and a perm
+            self.assertEqual(comb, list(filter(set(cwr).__contains__, perm)))     # comb: perm that is a cwr
+            self.assertEqual(comb, list(filter(set(perm).__contains__, cwr)))     # comb: cwr that is a perm
+            self.assertEqual(comb, sorted(set(cwr) & set(perm)))            # comb: both a cwr and a perm
 
     def test_compress(self):
         self.assertEqual(list(compress('ABCDEF', [1,0,1,0,1,1])), list('ACEF'))