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Viewing changes to bzrlib/tests/test_lru_cache.py

  • Committer: Canonical.com Patch Queue Manager
  • Date: 2009-06-18 20:25:52 UTC
  • mfrom: (4413.5.15 1.16-chk-direct)
  • Revision ID: pqm@pqm.ubuntu.com-20090618202552-xyl6tcvbxtm8bupf
(jam) Improve initial commit performance by creating a CHKMap in bulk,
        rather than via O(tree) map() calls.

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bzrlib/tests/test_lru_cache.py
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# Copyright (C) 2006, 2008, 2009 Canonical Ltd
 
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# Copyright (C) 2006, 2008 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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        cache[2] = 26
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        self.assertEqual([(2, 20), (2, 25)], cleanup_called)
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    def test_cleanup_error_maintains_linked_list(self):
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        cleanup_called = []
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        def cleanup_func(key, val):
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            cleanup_called.append((key, val))
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            raise ValueError('failure during cleanup')
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        cache = lru_cache.LRUCache(max_cache=10)
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        for i in xrange(10):
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            cache.add(i, i, cleanup=cleanup_func)
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        for i in xrange(10, 20):
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            self.assertRaises(ValueError,
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                cache.add, i, i, cleanup=cleanup_func)
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        self.assertEqual([(i, i) for i in xrange(10)], cleanup_called)
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        self.assertEqual(range(19, 9, -1), [n.key for n in cache._walk_lru()])
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    def test_cleanup_during_replace_still_replaces(self):
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        cleanup_called = []
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        def cleanup_func(key, val):
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            cleanup_called.append((key, val))
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            raise ValueError('failure during cleanup')
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        cache = lru_cache.LRUCache(max_cache=10)
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        for i in xrange(10):
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            cache.add(i, i, cleanup=cleanup_func)
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        self.assertRaises(ValueError,
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            cache.add, 1, 20, cleanup=cleanup_func)
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        # We also still update the recent access to this node
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        self.assertEqual([1, 9, 8, 7, 6, 5, 4, 3, 2, 0],
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                         [n.key for n in cache._walk_lru()])
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        self.assertEqual(20, cache[1])
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        self.assertEqual([(1, 1)], cleanup_called)
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        self.assertEqual([1, 9, 8, 7, 6, 5, 4, 3, 2, 0],
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                         [n.key for n in cache._walk_lru()])
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    def test_len(self):
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        cache = lru_cache.LRUCache(max_cache=10, after_cleanup_count=10)
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        cache[6] = 7
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        self.assertEqual([2, 3, 4, 5, 6], sorted(cache.keys()))
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    def test_after_cleanup_size_deprecated(self):
 
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        obj = self.callDeprecated([
 
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            'LRUCache.__init__(after_cleanup_size) was deprecated in 1.11.'
 
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            ' Use after_cleanup_count instead.'],
 
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            lru_cache.LRUCache, 50, after_cleanup_size=25)
 
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        self.assertEqual(obj._after_cleanup_count, 25)
 
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    def test_resize_smaller(self):
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        cache = lru_cache.LRUCache(max_cache=5, after_cleanup_count=4)
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        cache[1] = 2