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Viewing changes to bzrlib/selftest/testgraph.py

  • Committer: Robert Collins
  • Date: 2005-08-25 10:04:51 UTC
  • mto: (974.1.50) (1185.1.10) (1092.3.1)
  • mto: This revision was merged to the branch mainline in revision 1139.
  • Revision ID: robertc@robertcollins.net-20050825100451-b01297285491ba46
make a default merge choose a sane base with branch.common_ancestor

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bzrlib/selftest/testgraph.py
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from bzrlib.selftest import TestCase
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from bzrlib.graph import node_distances, nodes_by_distance
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class TestBase(TestCase):
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    def edge_add(self, *args):
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        for start, end in zip(args[:-1], args[1:]):
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            if start not in self.graph:
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                self.graph[start] = {}
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            if end not in self.graph:
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                self.graph[end] = {}
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            self.graph[start][end] = 1
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    def setUp(self):
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        TestCase.setUp(self)
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        self.graph = {}
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        self.edge_add('A', 'B', 'C', 'D')
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        self.edge_add('A', 'E', 'F', 'C')
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        self.edge_add('A', 'G', 'H', 'I', 'B')
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        self.edge_add('A', 'J', 'K', 'L', 'M', 'N')
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        self.edge_add('O', 'N')
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    def node_descendants(self):
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        descendants = {'A':set()}
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        for node in self.graph:
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            for ancestor in self.graph[node]:
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                if ancestor not in descendants:
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                    descendants[ancestor] = set()
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                descendants[ancestor].add(node)
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        return descendants
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    def test_distances(self):
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        descendants = self.node_descendants()
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        distances = node_distances(self.graph, descendants, 'A')
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        nodes = nodes_by_distance(distances)
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        self.assertEqual(nodes[0], 'D')
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        assert nodes[1] in ('N', 'C')
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        assert nodes[2] in ('N', 'C')
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        assert nodes[3] in ('B', 'M')
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        assert nodes[4] in ('B', 'M')
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