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| author | Raymond Hettinger <python@rcn.com> | 2010-12-01 03:45:41 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <python@rcn.com> | 2010-12-01 03:45:41 (GMT) |
| commit | c79fb0e52d297e0599a37be2652e75e3abc35690 (patch) | |
| tree | 512f5b891c76f0035c2eb7d672ba19385e6eb2c6 /Lib/test/test_functools.py | |
| parent | ed3a7d2d601ce1e65b0bacf24676440631158ec8 (diff) | |
| download | cpython-c79fb0e52d297e0599a37be2652e75e3abc35690.zip cpython-c79fb0e52d297e0599a37be2652e75e3abc35690.tar.gz cpython-c79fb0e52d297e0599a37be2652e75e3abc35690.tar.bz2 | |
Issue 10593: Adopt Nick's suggestion for an lru_cache with maxsize=None.
Diffstat (limited to 'Lib/test/test_functools.py')
| -rw-r--r-- | Lib/test/test_functools.py | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Lib/test/test_functools.py b/Lib/test/test_functools.py index 8f48e9e..e5921a7 100644 --- a/Lib/test/test_functools.py +++ b/Lib/test/test_functools.py @@ -586,6 +586,20 @@ class TestLRU(unittest.TestCase): self.assertEqual(misses, 4) self.assertEqual(currsize, 2) + def test_lru_with_maxsize_none(self): + @functools.lru_cache(maxsize=None) + def fib(n): + if n < 2: + return n + return fib(n-1) + fib(n-2) + self.assertEqual([fib(n) for n in range(16)], + [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610]) + self.assertEqual(fib.cache_info(), + functools._CacheInfo(hits=28, misses=16, maxsize=None, currsize=16)) + fib.cache_clear() + self.assertEqual(fib.cache_info(), + functools._CacheInfo(hits=0, misses=0, maxsize=None, currsize=0)) + def test_main(verbose=None): test_classes = ( TestPartial, |