1
# Copyright (C) 2005, 2006 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
from bzrlib.tests import TestCase
18
from bzrlib.deprecated_graph import node_distances, nodes_by_distance, Graph
21
class TestBase(TestCase):
23
def edge_add(self, *args):
24
for start, end in zip(args[:-1], args[1:]):
25
if start not in self.graph:
26
self.graph[start] = {}
27
if end not in self.graph:
29
self.graph[start][end] = 1
34
self.edge_add('A', 'B', 'C', 'D')
35
self.edge_add('A', 'E', 'F', 'C')
36
self.edge_add('A', 'G', 'H', 'I', 'B')
37
self.edge_add('A', 'J', 'K', 'L', 'M', 'N')
38
self.edge_add('O', 'N')
40
def node_descendants(self):
41
descendants = {'A':set()}
42
for node in self.graph:
43
for ancestor in self.graph[node]:
44
if ancestor not in descendants:
45
descendants[ancestor] = set()
46
descendants[ancestor].add(node)
49
def test_distances(self):
50
descendants = self.node_descendants()
51
distances = node_distances(self.graph, descendants, 'A')
52
nodes = nodes_by_distance(distances)
53
self.assertEqual(nodes[0], 'D')
54
self.assert_(nodes[1] in ('N', 'C'))
55
self.assert_(nodes[2] in ('N', 'C'))
56
self.assert_(nodes[3] in ('B', 'M'))
57
self.assert_(nodes[4] in ('B', 'M'))
59
#Ensure we don't shortcut through B when there's only a difference of
62
self.edge_add('A', 'B', 'C')
63
self.edge_add('A', 'D', 'E', 'C')
64
descendants = self.node_descendants()
65
distances = node_distances(self.graph, descendants, 'A')
66
self.assertEqual(distances['C'], 3)
69
class TestGraph(TestCase):
71
def test_get_descendants(self):
72
# Graph objects let you get a descendants graph in
73
# node: {direct-children:distance} which contains
74
# known children, including ghost children
76
graph.add_ghost('ghost')
77
graph.add_node('rev1', ['ghost'])
78
# check the result contains ghosts:
79
self.assertEqual({'ghost': {'rev1': 1}, 'rev1': {}},
80
graph.get_descendants())