1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
|
# This file is part of Tulip (https://tulip.labri.fr)
#
# Authors: David Auber and the Tulip development Team
# from LaBRI, University of Bordeaux
#
# Tulip is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License
# as published by the Free Software Foundation, either version 3
# of the License, or (at your option) any later version.
#
# Tulip is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU General Public License for more details.
import unittest
from tulip import tlp
NB_NODES = 5
NB_EDGES = 2 * (NB_NODES - 1)
class TestGraphStructure(unittest.TestCase):
# generate a simple graph with a cycle going from node 0
# to node (NB_NODES-2) and node (NB_NODES-1) connected to all the others
def setUp(self):
self.graph = tlp.newGraph()
self.nodes = []
self.edges = []
for i in range(NB_NODES):
self.nodes.append(self.graph.addNode())
for i in range(NB_NODES - 1):
if i != NB_NODES - 2:
self.edges.append(
self.graph.addEdge(self.nodes[i], self.nodes[i+1]))
else:
self.edges.append(
self.graph.addEdge(self.nodes[i], self.nodes[0]))
self.edges.append(
self.graph.addEdge(self.nodes[i], self.nodes[-1]))
def tearDown(self):
self.graph = None
self.nodes = None
self.edges = None
def test_nb_elements(self):
self.assertEqual(self.graph.numberOfNodes(), NB_NODES)
self.assertEqual(self.graph.numberOfEdges(), NB_EDGES)
self.assertEqual(len(list(self.graph.getNodes())), NB_NODES)
self.assertEqual(len(list(self.graph.getEdges())), NB_EDGES)
self.assertEqual(len(self.graph.nodes()), NB_NODES)
self.assertEqual(len(self.graph.edges()), NB_EDGES)
def test_is_element(self):
for n in self.nodes:
self.assertTrue(self.graph.isElement(n))
self.assertTrue(n in self.graph)
for e in self.edges:
self.assertTrue(self.graph.isElement(e))
self.assertTrue(e in self.graph)
for n in self.graph.getNodes():
self.assertIn(n, self.nodes)
for n in self.graph.nodes():
self.assertIn(n, self.nodes)
for e in self.graph.getEdges():
self.assertIn(e, self.edges)
self.assertIn(self.graph.source(e), self.nodes)
self.assertIn(self.graph.target(e), self.nodes)
ends = self.graph.ends(e)
self.assertIn(ends[0], self.nodes)
self.assertIn(ends[1], self.nodes)
for e in self.graph.edges():
self.assertIn(e, self.edges)
self.assertIn(self.graph.source(e), self.nodes)
self.assertIn(self.graph.target(e), self.nodes)
for i in range(NB_NODES - 1):
self.assertTrue(self.graph.hasEdge(self.nodes[i], self.nodes[i+1]))
self.assertIn(self.graph.existEdge(self.nodes[i], self.nodes[i+1]),
self.edges)
self.assertTrue((self.nodes[i], self.nodes[i+1]) in self.graph)
self.assertTrue(self.graph.hasEdge(self.nodes[i], self.nodes[-1]))
self.assertIn(self.graph.existEdge(self.nodes[i], self.nodes[-1]),
self.edges)
self.assertTrue((self.nodes[i], self.nodes[-1]) in self.graph)
self.assertFalse(self.graph.isElement(tlp.node(NB_NODES)))
self.assertTrue(tlp.node(NB_NODES) not in self.graph)
self.assertFalse(self.graph.isElement(tlp.edge(NB_EDGES)))
self.assertTrue(tlp.edge(NB_EDGES) not in self.graph)
def test_node_degrees(self):
for i in range(NB_NODES-1):
self.assertEqual(self.graph.deg(self.nodes[i]), 3)
self.assertEqual(self.graph.indeg(self.nodes[i]), 1)
self.assertEqual(self.graph.outdeg(self.nodes[i]), 2)
self.assertEqual(self.graph.deg(self.nodes[NB_NODES-1]), NB_NODES-1)
self.assertEqual(self.graph.indeg(self.nodes[NB_NODES-1]), NB_NODES-1)
self.assertEqual(self.graph.outdeg(self.nodes[NB_NODES-1]), 0)
def test_add_invalid_edge(self):
with self.assertRaises(Exception) as cm:
self.graph.addEdge(tlp.node(NB_NODES), tlp.node(NB_NODES+1))
self.assertEquals(
cm.exception.args[0],
'Node with id %s does not belong to graph "%s" (id %s)' %
(NB_NODES, self.graph.getName(), self.graph.getId()))
def test_del_elements(self):
with self.assertRaises(Exception) as cm:
self.graph.delNode(tlp.node(NB_NODES))
self.assertEquals(
cm.exception.args[0],
'Node with id %s does not belong to graph "%s" (id %s)' %
(NB_NODES, self.graph.getName(), self.graph.getId()))
with self.assertRaises(Exception) as cm:
self.graph.delEdge(tlp.edge(NB_EDGES))
self.assertEquals(
cm.exception.args[0],
'Edge with id %s does not belong to graph "%s" (id %s)' %
(NB_EDGES, self.graph.getName(), self.graph.getId()))
for i, e in enumerate(self.edges):
self.graph.delEdge(e)
self.assertEqual(self.graph.numberOfEdges(), NB_EDGES - (i+1))
self.assertFalse(self.graph.isElement(e))
for i, n in enumerate(self.nodes):
self.graph.delNode(n)
self.assertEqual(self.graph.numberOfNodes(), NB_NODES - (i+1))
self.assertFalse(self.graph.isElement(n))
def test_del_nodes_from_list(self):
invalid_nodes = [tlp.node(NB_NODES), tlp.node(NB_NODES+1)]
with self.assertRaises(Exception) as cm:
self.graph.delNodes(invalid_nodes)
self.assertEquals(
cm.exception.args[0],
'Node with id %s does not belong to graph "%s" (id %s)' %
(NB_NODES, self.graph.getName(), self.graph.getId()))
self.graph.delNodes(self.nodes)
self.assertEqual(self.graph.numberOfNodes(), 0)
self.assertEqual(self.graph.numberOfEdges(), 0)
def test_del_nodes_from_iterator(self):
self.graph.delNodes(self.graph.getNodes())
self.assertEqual(self.graph.numberOfNodes(), 0)
self.assertEqual(self.graph.numberOfEdges(), 0)
def test_del_edges_from_list(self):
invalid_edges = [tlp.edge(NB_EDGES), tlp.edge(NB_EDGES+1)]
with self.assertRaises(Exception) as cm:
self.graph.delEdges(invalid_edges)
self.assertEquals(
cm.exception.args[0],
'Edge with id %s does not belong to graph "%s" (id %s)' %
(NB_EDGES, self.graph.getName(), self.graph.getId()))
self.graph.delEdges(self.edges)
self.assertEqual(self.graph.numberOfEdges(), 0)
def test_del_edges_from_iterator(self):
self.graph.delEdges(self.graph.getEdges())
self.assertEqual(self.graph.numberOfEdges(), 0)
def test_add_then_del_nodes(self):
new_nodes = self.graph.addNodes(NB_NODES)
self.assertEqual(self.graph.numberOfNodes(), 2*NB_NODES)
for n in new_nodes:
self.assertTrue(self.graph.isElement(n))
self.graph.delNodes(new_nodes)
self.assertEqual(self.graph.numberOfNodes(), NB_NODES)
for n in new_nodes:
self.assertFalse(self.graph.isElement(n))
def test_add_then_del_edges(self):
invalid_edges = [(tlp.node(NB_NODES), tlp.node(NB_NODES+1)),
(tlp.node(NB_NODES+1), tlp.node(NB_NODES+2))]
with self.assertRaises(Exception) as cm:
self.graph.addEdges(invalid_edges)
self.assertEquals(
cm.exception.args[0],
'Node with id %s does not belong to graph "%s" (id %s)' %
(NB_NODES, self.graph.getName(), self.graph.getId()))
edges_to_add = []
for i in range(NB_EDGES):
edge = (self.graph.getRandomNode(), self.graph.getRandomNode())
edges_to_add.append(edge)
new_edges = self.graph.addEdges(edges_to_add)
self.assertEqual(self.graph.numberOfEdges(), 2*NB_EDGES)
for i, e in enumerate(new_edges):
self.assertTrue(self.graph.isElement(e))
self.assertEqual(self.graph.source(e), edges_to_add[i][0])
self.assertEqual(self.graph.target(e), edges_to_add[i][1])
self.graph.delEdges(new_edges)
self.assertEqual(self.graph.numberOfEdges(), NB_EDGES)
for n in new_edges:
self.assertFalse(self.graph.isElement(e))
def test_add_invalid_node_or_edge_to_root_graph(self):
with self.assertRaises(Exception) as cm:
self.graph.addNode(tlp.node(NB_NODES))
self.assertEquals(
cm.exception.args[0],
'Node with id %s does not belong to graph "%s" (id %s)' %
(NB_NODES, self.graph.getName(), self.graph.getId()))
with self.assertRaises(Exception) as cm:
self.graph.addEdge(tlp.edge(NB_EDGES))
self.assertEquals(
cm.exception.args[0],
'Edge with id %s does not belong to graph "%s" (id %s)' %
(NB_EDGES, self.graph.getName(), self.graph.getId()))
def test_edge_orders(self):
with self.assertRaises(Exception) as cm:
self.graph.setEdgeOrder(tlp.node(NB_NODES), [])
self.assertEquals(
cm.exception.args[0],
'Node with id %s does not belong to graph "%s" (id %s)' %
(NB_NODES, self.graph.getName(), self.graph.getId()))
with self.assertRaises(Exception) as cm:
self.graph.swapEdgeOrder(tlp.node(NB_NODES),
tlp.edge(), tlp.edge())
self.assertEquals(
cm.exception.args[0],
'Node with id %s does not belong to graph "%s" (id %s)' %
(NB_NODES, self.graph.getName(), self.graph.getId()))
with self.assertRaises(Exception) as cm:
self.graph.swapEdgeOrder(self.graph.getRandomNode(),
tlp.edge(NB_EDGES), tlp.edge(NB_EDGES+1))
self.assertEquals(
cm.exception.args[0],
'Edge with id %s does not belong to graph "%s" (id %s)' %
(NB_EDGES, self.graph.getName(), self.graph.getId()))
for n in self.graph.getNodes():
edges = list(self.graph.getInOutEdges(n))
edges = list(reversed(edges))
self.graph.setEdgeOrder(n, edges)
self.assertEqual(list(self.graph.getInOutEdges(n)), edges)
self.assertEqual(self.graph.allEdges(n), edges)
self.graph.swapEdgeOrder(n, edges[0], edges[-1])
edges[0], edges[-1] = edges[-1], edges[0]
self.assertEqual(list(self.graph.getInOutEdges(n)), edges)
self.assertEqual(self.graph.allEdges(n), edges)
def test_edge_extremities_modification(self):
with self.assertRaises(Exception) as cm:
self.graph.ends(tlp.edge(NB_EDGES))
self.assertEquals(
cm.exception.args[0],
'Edge with id %s does not belong to graph "%s" (id %s)' %
(NB_EDGES, self.graph.getName(), self.graph.getId()))
with self.assertRaises(Exception) as cm:
self.graph.reverse(tlp.edge(NB_EDGES))
self.assertEquals(
cm.exception.args[0],
'Edge with id %s does not belong to graph "%s" (id %s)' %
(NB_EDGES, self.graph.getName(), self.graph.getId()))
with self.assertRaises(Exception) as cm:
self.graph.setSource(tlp.edge(NB_EDGES), tlp.node())
self.assertEquals(
cm.exception.args[0],
'Edge with id %s does not belong to graph "%s" (id %s)' %
(NB_EDGES, self.graph.getName(), self.graph.getId()))
with self.assertRaises(Exception) as cm:
self.graph.setTarget(tlp.edge(NB_EDGES), tlp.node())
self.assertEquals(
cm.exception.args[0],
'Edge with id %s does not belong to graph "%s" (id %s)' %
(NB_EDGES, self.graph.getName(), self.graph.getId()))
with self.assertRaises(Exception) as cm:
self.graph.setSource(self.graph.getRandomEdge(),
tlp.node(NB_NODES))
self.assertEquals(
cm.exception.args[0],
'Node with id %s does not belong to graph "%s" (id %s)' %
(NB_NODES, self.graph.getName(), self.graph.getId()))
with self.assertRaises(Exception) as cm:
self.graph.setTarget(self.graph.getRandomEdge(),
tlp.node(NB_NODES))
self.assertEquals(
cm.exception.args[0],
'Node with id %s does not belong to graph "%s" (id %s)' %
(NB_NODES, self.graph.getName(), self.graph.getId()))
with self.assertRaises(Exception) as cm:
self.graph.setEnds(tlp.edge(NB_EDGES), tlp.node(), tlp.node())
self.assertEquals(
cm.exception.args[0],
'Edge with id %s does not belong to graph "%s" (id %s)' %
(NB_EDGES, self.graph.getName(), self.graph.getId()))
with self.assertRaises(Exception) as cm:
self.graph.setEnds(self.graph.getRandomEdge(),
tlp.node(NB_NODES), tlp.node(NB_NODES+1))
self.assertEquals(
cm.exception.args[0],
'Node with id %s does not belong to graph "%s" (id %s)' %
(NB_NODES, self.graph.getName(), self.graph.getId()))
for e in self.graph.edges():
ends = self.graph.ends(e)
self.graph.reverse(e)
self.assertEqual(self.graph.source(e), ends[1])
self.assertEqual(self.graph.target(e), ends[0])
new_src = self.graph.getRandomNode()
new_tgt = self.graph.getRandomNode()
self.graph.setSource(e, new_src)
self.graph.setTarget(e, new_tgt)
self.assertEqual(self.graph.source(e), new_src)
self.assertEqual(self.graph.target(e), new_tgt)
self.assertEqual(self.graph.ends(e), (new_src, new_tgt))
new_src = self.graph.getRandomNode()
new_tgt = self.graph.getRandomNode()
self.graph.setEnds(e, new_src, new_tgt)
self.assertEqual(self.graph.source(e), new_src)
self.assertEqual(self.graph.target(e), new_tgt)
self.assertEqual(self.graph.ends(e), (new_src, new_tgt))
|
