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gsutil
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third_party
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cachetools
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tests
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View File Name :
test_lfu.py
import unittest from cachetools import LFUCache from . import CacheTestMixin class LFUCacheTest(unittest.TestCase, CacheTestMixin): Cache = LFUCache def test_lfu(self): cache = LFUCache(maxsize=2) cache[1] = 1 cache[1] cache[2] = 2 cache[3] = 3 self.assertEqual(len(cache), 2) self.assertEqual(cache[1], 1) self.assertTrue(2 in cache or 3 in cache) self.assertTrue(2 not in cache or 3 not in cache) cache[4] = 4 self.assertEqual(len(cache), 2) self.assertEqual(cache[4], 4) self.assertEqual(cache[1], 1) def test_lfu_getsizeof(self): cache = LFUCache(maxsize=3, getsizeof=lambda x: x) cache[1] = 1 cache[2] = 2 self.assertEqual(len(cache), 2) self.assertEqual(cache[1], 1) self.assertEqual(cache[2], 2) cache[3] = 3 self.assertEqual(len(cache), 1) self.assertEqual(cache[3], 3) self.assertNotIn(1, cache) self.assertNotIn(2, cache) with self.assertRaises(ValueError): cache[4] = 4 self.assertEqual(len(cache), 1) self.assertEqual(cache[3], 3)