diff options
Diffstat (limited to 'Lib/test/test_b2.py')
| -rw-r--r-- | Lib/test/test_b2.py | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/Lib/test/test_b2.py b/Lib/test/test_b2.py index 7118b08bfd..10c0bfb677 100644 --- a/Lib/test/test_b2.py +++ b/Lib/test/test_b2.py @@ -121,6 +121,25 @@ if reduce(lambda x, y: x*y, range(2,8), 1) <> 5040: raise TestFailed, 'reduce(): compute 7!' if reduce(lambda x, y: x*y, range(2,21), 1L) <> 2432902008176640000L: raise TestFailed, 'reduce(): compute 20!, use long' +class Squares: + def __init__(self, max): + self.max = max + self.sofar = [] + def __len__(self): return len(self.sofar) + def __getitem__(self, i): + if not 0 <= i < self.max: raise IndexError + n = len(self.sofar) + while n <= i: + self.sofar.append(n*n) + n = n+1 + return self.sofar[i] +if reduce(lambda x, y: x+y, Squares(10)) != 285: + raise TestFailed, 'reduce(<+>, Squares(10))' +if reduce(lambda x, y: x+y, Squares(10), 0) != 285: + raise TestFailed, 'reduce(<+>, Squares(10), 0)' +if reduce(lambda x, y: x+y, Squares(0), 0) != 0: + raise TestFailed, 'reduce(<+>, Squares(0), 0)' + print 'reload' import string |