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gsutil
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cachetools
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tests
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View File Name :
test_lru.py
import unittest from cachetools import LRUCache from . import CacheTestMixin class LRUCacheTest(unittest.TestCase, CacheTestMixin): Cache = LRUCache def test_lru(self): cache = LRUCache(maxsize=2) cache[1] = 1 cache[2] = 2 cache[3] = 3 self.assertEqual(len(cache), 2) self.assertEqual(cache[2], 2) self.assertEqual(cache[3], 3) self.assertNotIn(1, cache) cache[2] cache[4] = 4 self.assertEqual(len(cache), 2) self.assertEqual(cache[2], 2) self.assertEqual(cache[4], 4) self.assertNotIn(3, cache) cache[5] = 5 self.assertEqual(len(cache), 2) self.assertEqual(cache[4], 4) self.assertEqual(cache[5], 5) self.assertNotIn(2, cache) def test_lru_getsizeof(self): cache = LRUCache(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)