GenericGraphsTest.java

/* ==========================================
 * 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 program and the accompanying materials are dual-licensed under
 * either
 *
 * (a) the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation, or (at your option) any
 * later version.
 *
 * or (per the licensee's choosing)
 *
 * (b) the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation.
 */
/* --------------------------
 * GenericGraphsTest.java
 * --------------------------
 * (C) Copyright 2006-2008, by HartmutBenz and Contributors.
 *
 * Original Author:  Hartmut Benz
 * Contributor(s):   John V. Sichi
 *
 * $Id$
 *
 * Changes
 * -------
 * ??-???-2006 : Initial revision (HB);
 *
 */
package org.jgrapht.graph;

import org.jgrapht.*;


/**
 * A unit test for graph generic vertex/edge parameters.
 *
 * @author Hartmut Benz
 */
public class GenericGraphsTest
    extends EnhancedTestCase
{
    //~ Instance fields --------------------------------------------------------

    Graph<Object, ? extends DefaultEdge> objectGraph;
    Graph<FooVertex, FooEdge> fooFooGraph;
    Graph<BarVertex, BarEdge> barBarGraph;
    Graph<FooVertex, BarEdge> fooBarGraph;

    //~ Constructors -----------------------------------------------------------

    /**
     * @see junit.framework.TestCase#TestCase(java.lang.String)
     */
    public GenericGraphsTest(String name)
    {
        super(name);
    }

    //~ Methods ----------------------------------------------------------------

    // ~ Methods ---------------------------------------------------------------

    public void testLegalInsertStringGraph()
    {
        String v1 = "Vertex1";
        Object v2 = "Vertex2";
        objectGraph.addVertex(v1);
        objectGraph.addVertex(v2);
        objectGraph.addEdge(v1, v2);
    }

    public void testLegalInsertFooGraph()
    {
        FooVertex v1 = new FooVertex();
        FooVertex v2 = new FooVertex();
        BarVertex vb1 = new BarVertex();
        BarVertex vb2 = new BarVertex();
        fooFooGraph.addVertex(v1);
        fooFooGraph.addVertex(v2);
        fooFooGraph.addVertex(vb1);
        fooFooGraph.addVertex(vb2);
        fooFooGraph.addEdge(v1, v2);
        fooFooGraph.addEdge(vb1, vb2);
        fooFooGraph.addEdge(v1, vb2);
        fooFooGraph.addEdge(v1, v2, new BarEdge());
        fooFooGraph.addEdge(v1, vb2, new BarEdge());
        fooFooGraph.addEdge(vb1, vb2, new BarEdge());
    }

    public void testLegalInsertBarGraph()
    {
        BarVertex v1 = new BarVertex();
        BarVertex v2 = new BarVertex();
        barBarGraph.addVertex(v1);
        barBarGraph.addVertex(v2);
        barBarGraph.addEdge(v1, v2);
    }

    public void testLegalInsertFooBarGraph()
    {
        FooVertex v1 = new FooVertex();
        FooVertex v2 = new FooVertex();
        BarVertex vb1 = new BarVertex();
        BarVertex vb2 = new BarVertex();
        fooFooGraph.addVertex(v1);
        fooFooGraph.addVertex(v2);
        fooFooGraph.addVertex(vb1);
        fooFooGraph.addVertex(vb2);
        fooFooGraph.addEdge(v1, v2);
        fooFooGraph.addEdge(vb1, vb2);
        fooFooGraph.addEdge(v1, vb2);
    }

    public void testAlissaHacker()
    {
        DirectedGraph<String, CustomEdge> g =
            new DefaultDirectedGraph<String, CustomEdge>(CustomEdge.class);
        g.addVertex("a");
        g.addVertex("b");
        g.addEdge("a", "b");
        CustomEdge custom = g.getEdge("a", "b");
        String s = custom.toString();
        assertEquals("Alissa P. Hacker approves the edge from a to b", s);
    }

    public void testEqualButNotSameVertex()
    {
        EquivVertex v1 = new EquivVertex();
        EquivVertex v2 = new EquivVertex();
        EquivGraph g = new EquivGraph();
        g.addVertex(v1);
        g.addVertex(v2);
        g.addEdge(v1, v2, new DefaultEdge());
        assertEquals(2, g.degreeOf(v1));
        assertEquals(2, g.degreeOf(v2));
    }

    /**
     * .
     */
    protected void setUp()
    {
        objectGraph =
            new DefaultDirectedGraph<Object, DefaultEdge>(
                DefaultEdge.class);
        fooFooGraph = new SimpleGraph<FooVertex, FooEdge>(FooEdge.class);
        barBarGraph = new SimpleGraph<BarVertex, BarEdge>(BarEdge.class);
    }

    //~ Inner Classes ----------------------------------------------------------

    public static class CustomEdge
        extends DefaultEdge
    {
        private static final long serialVersionUID = 1L;

        public String toString()
        {
            return "Alissa P. Hacker approves the edge from " + getSource()
                + " to " + getTarget();
        }
    }

    public static class EquivVertex
    {
        public boolean equals(Object o)
        {
            return true;
        }

        public int hashCode()
        {
            return 1;
        }
    }

    public static class EquivGraph
        extends AbstractBaseGraph<EquivVertex, DefaultEdge>
        implements UndirectedGraph<EquivVertex, DefaultEdge>
    {
        /**
         */
        private static final long serialVersionUID = 8647217182401022498L;

        public EquivGraph()
        {
            super(
                new ClassBasedEdgeFactory<EquivVertex, DefaultEdge>(
                    DefaultEdge.class),
                true,
                true);
        }
    }

    public static class FooEdge
        extends DefaultEdge
    {
        private static final long serialVersionUID = 1L;
    }

    private class FooVertex
    {
        String str;

        public FooVertex()
        {
            super();
            str = "empty foo";
        }

        public FooVertex(String s)
        {
            str = s;
        }
    }

    public static class BarEdge
        extends FooEdge
    {
        private static final long serialVersionUID = 1L;
    }

    private class BarVertex
        extends FooVertex
    {
        public BarVertex()
        {
            super("empty bar");
        }

        public BarVertex(String s)
        {
            super(s);
        }
    }
}

// End GenericGraphsTest.java