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bzrlib/tests/test_graph.py
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# Copyright (C) 2007 Canonical Ltd
 
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# Copyright (C) 2007, 2008, 2009 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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    )
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from bzrlib.revision import NULL_REVISION
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from bzrlib.tests import TestCaseWithMemoryTransport
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from bzrlib.symbol_versioning import deprecated_in 
 
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from bzrlib.symbol_versioning import deprecated_in
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# Ancestry 1:
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        graph = self.make_graph(history_shortcut)
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        self.assertEqual(set(['rev2b']), graph.find_lca('rev3a', 'rev3b'))
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    def test_lefthand_distance_smoke(self):
 
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        """A simple does it work test for graph.lefthand_distance(keys)."""
 
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        graph = self.make_graph(history_shortcut)
 
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        distance_graph = graph.find_lefthand_distances(['rev3b', 'rev2a'])
 
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        self.assertEqual({'rev2a': 2, 'rev3b': 3}, distance_graph)
 
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    def test_lefthand_distance_ghosts(self):
 
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        """A simple does it work test for graph.lefthand_distance(keys)."""
 
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        nodes = {'nonghost':[NULL_REVISION], 'toghost':['ghost']}
 
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        graph = self.make_graph(nodes)
 
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        distance_graph = graph.find_lefthand_distances(['nonghost', 'toghost'])
 
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        self.assertEqual({'nonghost': 1, 'toghost': -1}, distance_graph)
 
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    def test_recursive_unique_lca(self):
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        """Test finding a unique least common ancestor.
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