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Viewing changes to bzrlib/tests/test_btree_index.py

  • Committer: Canonical.com Patch Queue Manager
  • Date: 2009-10-13 06:08:53 UTC
  • mfrom: (4737.1.1 merge-2.0-into-devel)
  • Revision ID: pqm@pqm.ubuntu.com-20091013060853-erk2aaj80fnkrv25
(andrew) Merge lp:bzr/2.0 into lp:bzr, including fixes for #322807,
        #389413, #402623 and documentation improvements.

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bzrlib/tests/test_btree_index.py
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from bzrlib import (
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    btree_index,
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    errors,
 
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    fifo_cache,
 
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    lru_cache,
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    osutils,
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    tests,
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    )
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        self.assertEqual({}, parent_map)
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        self.assertEqual(set([('one',), ('two',)]), missing_keys)
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    def test_supports_unlimited_cache(self):
 
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        builder = btree_index.BTreeBuilder(reference_lists=0, key_elements=1)
 
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        # We need enough nodes to cause a page split (so we have both an
 
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        # internal node and a couple leaf nodes. 500 seems to be enough.)
 
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        nodes = self.make_nodes(500, 1, 0)
 
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        for node in nodes:
 
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            builder.add_node(*node)
 
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        stream = builder.finish()
 
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        trans = get_transport(self.get_url())
 
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        size = trans.put_file('index', stream)
 
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        index = btree_index.BTreeGraphIndex(trans, 'index', size)
 
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        self.assertEqual(500, index.key_count())
 
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        # We have an internal node
 
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        self.assertEqual(2, len(index._row_lengths))
 
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        # We have at least 2 leaf nodes
 
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        self.assertTrue(index._row_lengths[-1] >= 2)
 
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        self.assertIsInstance(index._leaf_node_cache, lru_cache.LRUCache)
 
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        self.assertEqual(btree_index._NODE_CACHE_SIZE,
 
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                         index._leaf_node_cache._max_cache)
 
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        self.assertIsInstance(index._internal_node_cache, fifo_cache.FIFOCache)
 
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        self.assertEqual(100, index._internal_node_cache._max_cache)
 
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        # No change if unlimited_cache=False is passed
 
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        index = btree_index.BTreeGraphIndex(trans, 'index', size,
 
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                                            unlimited_cache=False)
 
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        self.assertIsInstance(index._leaf_node_cache, lru_cache.LRUCache)
 
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        self.assertEqual(btree_index._NODE_CACHE_SIZE,
 
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                         index._leaf_node_cache._max_cache)
 
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        self.assertIsInstance(index._internal_node_cache, fifo_cache.FIFOCache)
 
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        self.assertEqual(100, index._internal_node_cache._max_cache)
 
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        index = btree_index.BTreeGraphIndex(trans, 'index', size,
 
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                                            unlimited_cache=True)
 
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        self.assertIsInstance(index._leaf_node_cache, dict)
 
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        self.assertIs(type(index._internal_node_cache), dict)
 
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        # Exercise the lookup code
 
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        entries = set(index.iter_entries([n[0] for n in nodes]))
 
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        self.assertEqual(500, len(entries))
 
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class TestBTreeNodes(BTreeTestCase):
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