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
|
/* ==========================================
* JGraphT : a free Java graph-theory library
* ==========================================
*
* Project Info: http://jgrapht.sourceforge.net/
* Project Creator: Barak Naveh (http://sourceforge.net/users/barak_naveh)
*
* (C) Copyright 2003-2008, by Barak Naveh and Contributors.
*
* This library 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 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation,
* Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
/* -----------------
* RandomGraphGeneratorTest.java
* -----------------
* (C) Copyright 2005-2008, by Assaf Lehr and Contributors.
*
* Original Author: Assaf Lehr
* Contributor(s): -
*
* $Id: RandomGraphGeneratorTest.java 704 2010-02-28 02:29:09Z perfecthash $
*
* Changes
* -------
*/
package org.jgrapht.generate;
import java.util.*;
import junit.framework.*;
import org.jgrapht.*;
import org.jgrapht.experimental.isomorphism.*;
import org.jgrapht.graph.*;
/**
* @author Assaf
* @since Aug 6, 2005
*/
public class RandomGraphGeneratorTest
extends TestCase
{
//~ Methods ----------------------------------------------------------------
public void testGenerateDirectedGraph()
{
List<Graph<Integer, DefaultEdge>> graphArray =
new ArrayList<Graph<Integer, DefaultEdge>>();
for (int i = 0; i < 3; ++i) {
graphArray.add(
new SimpleDirectedGraph<Integer, DefaultEdge>(
DefaultEdge.class));
}
generateGraphs(graphArray, 11, 100);
assertTrue(
EdgeTopologyCompare.compare(graphArray.get(0), graphArray.get(1)));
// cannot assert false , cause it may be true once in a while (random)
// but it generally should work.
// assertFalse(EdgeTopologyCompare.compare(graphArray.get(1),graphArray.get(2)));
}
public void testGenerateListenableUndirectedGraph()
{
List<Graph<Integer, DefaultEdge>> graphArray =
new ArrayList<Graph<Integer, DefaultEdge>>();
for (int i = 0; i < 3; ++i) {
graphArray.add(
new ListenableUndirectedGraph<Integer, DefaultEdge>(
DefaultEdge.class));
}
generateGraphs(graphArray, 11, 50);
assertTrue(
EdgeTopologyCompare.compare(graphArray.get(0), graphArray.get(1)));
}
public void testBadVertexFactory()
{
RandomGraphGenerator<String, DefaultEdge> randomGen =
new RandomGraphGenerator<String, DefaultEdge>(
10,
3);
Graph<String, DefaultEdge> graph =
new SimpleDirectedGraph<String, DefaultEdge>(DefaultEdge.class);
try {
randomGen.generateGraph(
graph,
new ClassBasedVertexFactory<String>(String.class),
null);
fail("IllegalArgumentException expected");
} catch (IllegalArgumentException ex) {
// expected
}
}
/**
* Generates 3 graphs with the same numOfVertex and numOfEdges. The first
* two are generated using the same RandomGraphGenerator; the third is
* generated using a new instance.
*
* @param graphs array of graphs to generate
* @param numOfVertex number of vertices to generate per graph
* @param numOfEdges number of edges to generate per graph
*/
private static void generateGraphs(
List<Graph<Integer, DefaultEdge>> graphs,
int numOfVertex,
int numOfEdges)
{
RandomGraphGenerator<Integer, DefaultEdge> randomGen =
new RandomGraphGenerator<Integer, DefaultEdge>(
numOfVertex,
numOfEdges);
randomGen.generateGraph(
graphs.get(0),
new IntegerVertexFactory(),
null);
// use the same randomGen
randomGen.generateGraph(
graphs.get(1),
new IntegerVertexFactory(),
null);
// use new randomGen here
RandomGraphGenerator<Integer, DefaultEdge> newRandomGen =
new RandomGraphGenerator<Integer, DefaultEdge>(
numOfVertex,
numOfEdges);
newRandomGen.generateGraph(
graphs.get(2),
new IntegerVertexFactory(),
null);
}
}
// End RandomGraphGeneratorTest.java
|
