~bzr-pqm/bzr/bzr.dev

1185.31.25 by John Arbash Meinel
Renamed all of the tests from selftest/foo.py to tests/test_foo.py
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from bzrlib.tests import TestCase
1607.1.12 by Robert Collins
Fix common_ancestor to still calculate a common ancestor when ghosts are
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from bzrlib.graph import node_distances, nodes_by_distance, Graph
974.1.57 by aaron.bentley at utoronto
Started work on djkstra longest-path algorithm
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class TestBase(TestCase):
1607.1.12 by Robert Collins
Fix common_ancestor to still calculate a common ancestor when ghosts are
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974.1.57 by aaron.bentley at utoronto
Started work on djkstra longest-path algorithm
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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 = {}
974.1.58 by aaron.bentley at utoronto
Implemented yet another farthest_node algorithm
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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')
974.1.64 by Aaron Bentley
Handled ancestors that are missing when finding a base
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        self.edge_add('O', 'N')
974.1.87 by Aaron Bentley
Refactored and documented graph stuff
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    def node_descendants(self):
974.1.64 by Aaron Bentley
Handled ancestors that are missing when finding a base
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        descendants = {'A':set()}
974.1.59 by aaron.bentley at utoronto
Created yet another longest-patch-picker
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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)
974.1.87 by Aaron Bentley
Refactored and documented graph stuff
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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)
974.1.59 by aaron.bentley at utoronto
Created yet another longest-patch-picker
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        self.assertEqual(nodes[0], 'D')
1185.16.145 by Martin Pool
Remove all assert statements from test cases.
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        self.assert_(nodes[1] in ('N', 'C'))
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        self.assert_(nodes[2] in ('N', 'C'))
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        self.assert_(nodes[3] in ('B', 'M'))
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        self.assert_(nodes[4] in ('B', 'M'))
974.1.59 by aaron.bentley at utoronto
Created yet another longest-patch-picker
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1185.8.3 by Aaron Bentley
Fixed bug in distance-from-root graph operation
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        #Ensure we don't shortcut through B when there's only a difference of
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        # 1 in distance
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        self.graph = {}
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        self.edge_add('A', 'B', 'C')
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        self.edge_add('A', 'D', 'E', 'C')
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        descendants = self.node_descendants()
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        distances = node_distances(self.graph, descendants, 'A')
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        self.assertEqual(distances['C'], 3)
974.1.58 by aaron.bentley at utoronto
Implemented yet another farthest_node algorithm
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1607.1.12 by Robert Collins
Fix common_ancestor to still calculate a common ancestor when ghosts are
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class TestGraph(TestCase):
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    def test_get_descendants(self):
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        # Graph objects let you get a descendants graph in 
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        # node: {direct-children:distance} which contains
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        # known children, including ghost children
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        graph = Graph()
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        graph.add_ghost('ghost')
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        graph.add_node('rev1', ['ghost'])
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        # check the result contains ghosts:
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        self.assertEqual({'ghost': {'rev1': 1}, 'rev1': {}},
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                         graph.get_descendants())