468
468
self.assertEqual(new_root, chkmap._root_node._key)
470
def test_apply_delete_to_internal_node(self):
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# applying a delta should be convert an internal root node to a leaf
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# node if the delta shrinks the map enough.
473
store = self.get_chk_bytes()
474
chkmap = CHKMap(store, None)
475
# Add three items: 2 small enough to fit in one node, and one huge to
476
# force multiple nodes.
477
chkmap._root_node.set_maximum_size(100)
478
chkmap.map(('small',), 'value')
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chkmap.map(('little',), 'value')
480
chkmap.map(('very-big',), 'x' * 100)
481
# (Check that we have constructed the scenario we want to test)
482
self.assertIsInstance(chkmap._root_node, InternalNode)
483
# Delete the huge item so that the map fits in one node again.
484
delta = [(('very-big',), None, None)]
485
chkmap.apply_delta(delta)
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self.assertCanonicalForm(chkmap)
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self.assertIsInstance(chkmap._root_node, LeafNode)
470
489
def test_apply_new_keys_must_be_new(self):
471
490
# applying a delta (None, "a", "b") to a map with 'a' in it generates
added
removed
bzrlib/tests/test_chk_map.py
