Add more tests for the powerset() recipe.

2009-01-27 13:26:35 +00:00 · 2009-01-27 13:26:35 +00:00 · 560f9a8a90
parent 2f6c2e03a8
commit 560f9a8a90
1 changed files with 6 additions and 0 deletions
--- a/Lib/test/test_itertools.py
+++ b/Lib/test/test_itertools.py
@ -1491,6 +1491,12 @@ perform as purported.
 >>> list(powerset([1,2,3]))
 [(), (1,), (2,), (3,), (1, 2), (1, 3), (2, 3), (1, 2, 3)]

+>>> all(len(list(powerset(range(n)))) == 2**n for n in range(18))
+True
+
+>>> list(powerset('abcde')) == sorted(sorted(set(powerset('abcde'))), key=len)
+True
+
 >>> list(unique_everseen('AAAABBBCCDAABBB'))
 ['A', 'B', 'C', 'D']