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| author | Mark Dickinson <dickinsm@gmail.com> | 2009-06-24 18:36:46 (GMT) |
|---|---|---|
| committer | Mark Dickinson <dickinsm@gmail.com> | 2009-06-24 18:36:46 (GMT) |
| commit | eb36d31bb8d0fdf4be14fd14deaf88149e771417 (patch) | |
| tree | aaa34d5cfebafef2da73e7c93652ca5a04676a11 /Lib/test/test_builtin.py | |
| parent | eeb575f3290802bb542ad5f7442822586c8c08cf (diff) | |
| download | cpython-eb36d31bb8d0fdf4be14fd14deaf88149e771417.zip cpython-eb36d31bb8d0fdf4be14fd14deaf88149e771417.tar.gz cpython-eb36d31bb8d0fdf4be14fd14deaf88149e771417.tar.bz2 | |
Issue #6334: Fix buggy internal length calculation in builtin range function
Diffstat (limited to 'Lib/test/test_builtin.py')
| -rw-r--r-- | Lib/test/test_builtin.py | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py index a62e124..fdb0ea2 100644 --- a/Lib/test/test_builtin.py +++ b/Lib/test/test_builtin.py @@ -924,6 +924,24 @@ class BuiltinTest(unittest.TestCase): self.assertEqual(list(range(1, 10, 3)), [1, 4, 7]) #self.assertEqual(list(range(5, -5, -3)), [5, 2, -1, -4]) + #issue 6334: the internal stored range length was being + #computed incorrectly in some cases involving large arguments. + x = range(10**20, 10**20+10, 3) + self.assertEqual(len(x), 4) + self.assertEqual(len(list(x)), 4) + + x = range(10**20+10, 10**20, 3) + self.assertEqual(len(x), 0) + self.assertEqual(len(list(x)), 0) + + x = range(10**20, 10**20+10, -3) + self.assertEqual(len(x), 0) + self.assertEqual(len(list(x)), 0) + + x = range(10**20+10, 10**20, -3) + self.assertEqual(len(x), 4) + self.assertEqual(len(list(x)), 4) + """ XXX(nnorwitz): # Now test range() with longs self.assertEqual(list(range(-2**100)), []) |