hmz007
36ed224bac
Signed-off-by: hmz007 <hmz007@gmail.com> Change-Id: Ib87fdbe7a0be7dc961af3500fe9ea4589a127f9f
51 lines
1.2 KiB
Python
51 lines
1.2 KiB
Python
import unittest
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from cachetools import LFUCache
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from . import CacheTestMixin
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class LFUCacheTest(unittest.TestCase, CacheTestMixin):
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Cache = LFUCache
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def test_lfu(self):
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cache = LFUCache(maxsize=2)
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cache[1] = 1
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cache[1]
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cache[2] = 2
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cache[3] = 3
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self.assertEqual(len(cache), 2)
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self.assertEqual(cache[1], 1)
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self.assertTrue(2 in cache or 3 in cache)
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self.assertTrue(2 not in cache or 3 not in cache)
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cache[4] = 4
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self.assertEqual(len(cache), 2)
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self.assertEqual(cache[4], 4)
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self.assertEqual(cache[1], 1)
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def test_lfu_getsizeof(self):
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cache = LFUCache(maxsize=3, getsizeof=lambda x: x)
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cache[1] = 1
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cache[2] = 2
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self.assertEqual(len(cache), 2)
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self.assertEqual(cache[1], 1)
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self.assertEqual(cache[2], 2)
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cache[3] = 3
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self.assertEqual(len(cache), 1)
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self.assertEqual(cache[3], 3)
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self.assertNotIn(1, cache)
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self.assertNotIn(2, cache)
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with self.assertRaises(ValueError):
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cache[4] = 4
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self.assertEqual(len(cache), 1)
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self.assertEqual(cache[3], 3)
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