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Optionally measure size of cache by sum of length of values

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This commit is contained in:
Erik Johnston 2017-01-13 17:46:17 +00:00
parent 95a22ae194
commit 2fae34bd2c
5 changed files with 66 additions and 21 deletions
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25
tests/util/test_lrucache.py
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@ -232,3 +232,28 @@ class LruCacheCallbacksTestCase(unittest.TestCase):
self.assertEquals(m1.call_count, 1)
self.assertEquals(m2.call_count, 0)
self.assertEquals(m3.call_count, 1)
class LruCacheSizedTestCase(unittest.TestCase):
def test_evict(self):
cache = LruCache(5, size_callback=len)
cache["key1"] = [0]
cache["key2"] = [1, 2]
cache["key3"] = [3]
cache["key4"] = [4]
self.assertEquals(cache["key1"], [0])
self.assertEquals(cache["key2"], [1, 2])
self.assertEquals(cache["key3"], [3])
self.assertEquals(cache["key4"], [4])
self.assertEquals(len(cache), 5)
cache["key5"] = [5, 6]
self.assertEquals(len(cache), 4)
self.assertEquals(cache.get("key1"), None)
self.assertEquals(cache.get("key2"), None)
self.assertEquals(cache["key3"], [3])
self.assertEquals(cache["key4"], [4])
self.assertEquals(cache["key5"], [5, 6])