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
|
/*******************************************************************************
* Copyright (c) 2009, 2015 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0, which accompanies this distribution
* and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.common.utility.tests.internal.iterable;
import java.util.ArrayList;
import java.util.Collection;
import org.eclipse.jpt.common.utility.internal.ObjectTools;
import org.eclipse.jpt.common.utility.internal.collection.ListTools;
import org.eclipse.jpt.common.utility.internal.iterable.IterableTools;
import org.eclipse.jpt.common.utility.internal.transformer.DisabledTransformer;
import org.eclipse.jpt.common.utility.internal.transformer.TransformerAdapter;
import org.eclipse.jpt.common.utility.tests.internal.TestTools;
import org.eclipse.jpt.common.utility.transformer.Transformer;
import junit.framework.TestCase;
@SuppressWarnings("nls")
public class GraphIterableTests
extends TestCase
{
/** this will be populated with all the nodes created for the test */
Collection<GraphNode> nodes = new ArrayList<>();
public GraphIterableTests(String name) {
super(name);
}
@Override
protected void tearDown() throws Exception {
TestTools.clear(this);
super.tearDown();
}
public void testNeighbors() {
for (GraphNode gn : this.buildGraphIterable()) {
assertTrue(this.nodes.contains(gn));
}
}
private Iterable<GraphNode> buildGraphIterable() {
return ObjectTools.graph(this.buildGraphRoot(), CHILDREN_TRANSFORMER);
}
public void testNeighbors_roots() {
for (GraphNode gn : this.buildGraphIterable_roots()) {
assertTrue(this.nodes.contains(gn));
}
}
private Iterable<GraphNode> buildGraphIterable_roots() {
return IterableTools.graphIterable(new GraphNode[] { this.buildGraphRoot() }, CHILDREN_TRANSFORMER);
}
public void testToString() {
assertNotNull(this.buildGraphIterable().toString());
}
public void testBogusTransformer() {
boolean exCaught = false;
try {
for (GraphNode gn : IterableTools.graphIterable(this.buildGraphRoot(), DisabledTransformer.<GraphNode, Iterable<? extends GraphNode>>instance())) {
assertTrue(this.nodes.contains(gn));
}
fail();
} catch (RuntimeException ex) {
exCaught = true;
}
assertTrue(exCaught);
}
public GraphNode buildGraphRoot() {
GraphNode ncNode = new GraphNode("North Carolina");
GraphNode vaNode = new GraphNode("Virginia");
GraphNode scNode = new GraphNode("South Carolina");
GraphNode gaNode = new GraphNode("Georgia");
GraphNode flNode = new GraphNode("Florida");
GraphNode alNode = new GraphNode("Alabama");
GraphNode msNode = new GraphNode("Mississippi");
GraphNode tnNode = new GraphNode("Tennessee");
ncNode.setNeighbors(new GraphNode[] { vaNode, scNode, gaNode, tnNode });
vaNode.setNeighbors(new GraphNode[] { ncNode, tnNode });
scNode.setNeighbors(new GraphNode[] { ncNode, gaNode });
gaNode.setNeighbors(new GraphNode[] { ncNode, scNode, flNode, alNode, tnNode });
flNode.setNeighbors(new GraphNode[] { gaNode });
alNode.setNeighbors(new GraphNode[] { gaNode, msNode, tnNode });
msNode.setNeighbors(new GraphNode[] { alNode, tnNode });
tnNode.setNeighbors(new GraphNode[] { vaNode, ncNode, gaNode, alNode, msNode });
return ncNode;
}
private static final Transformer<GraphNode, Iterable<? extends GraphNode>> CHILDREN_TRANSFORMER = new ChildrenTransformer();
static class ChildrenTransformer
extends TransformerAdapter<GraphNode, Iterable<? extends GraphNode>>
{
@Override
public Iterable<GraphNode> transform(GraphNode node) {
return node.getNeighbors();
}
}
public class GraphNode {
private String name;
private Collection<GraphNode> neighbors = new ArrayList<>();
public GraphNode(String name) {
super();
GraphIterableTests.this.nodes.add(this); // log node
this.name = name;
}
public String getName() {
return this.name;
}
void setNeighbors(GraphNode[] neighbors) {
this.neighbors = ListTools.arrayList(neighbors);
}
public Iterable<GraphNode> getNeighbors() {
return this.neighbors;
}
public int neighborsSize() {
return this.neighbors.size();
}
@Override
public String toString() {
return "GraphNode(" + this.name + ")";
}
}
}
|
