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import unittest
import random
from . import CacheTestMixin, DecoratorTestMixin
from cachetools import RRCache, rr_cache
class RRCacheTest(unittest.TestCase, CacheTestMixin, DecoratorTestMixin):
def cache(self, maxsize, choice=random.choice, missing=None,
getsizeof=None):
return RRCache(maxsize, choice=choice, missing=missing,
getsizeof=getsizeof)
def decorator(self, maxsize, choice=random.choice, typed=False, lock=None):
return rr_cache(maxsize, choice=choice, typed=typed, lock=lock)
def test_choice(self):
cache = self.cache(maxsize=2, choice=min)
self.assertEqual(min, cache.choice)
cache[1] = 1
cache[2] = 2
cache[3] = 3
self.assertEqual(2, len(cache))
self.assertEqual(2, cache[2])
self.assertEqual(3, cache[3])
self.assertNotIn(1, cache)
cache[0] = 0
self.assertEqual(2, len(cache))
self.assertEqual(0, cache[0])
self.assertEqual(3, cache[3])
self.assertNotIn(2, cache)
cache[4] = 4
self.assertEqual(2, len(cache))
self.assertEqual(3, cache[3])
self.assertEqual(4, cache[4])
self.assertNotIn(0, cache)
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