/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.tuscany.core.databinding.impl;
import java.util.List;
import junit.framework.Assert;
import junit.framework.TestCase;
import org.apache.tuscany.core.databinding.impl.DirectedGraph.Edge;
import org.apache.tuscany.core.databinding.impl.DirectedGraph.Vertex;
public class DirectedGraphTestCase extends TestCase {
private DirectedGraph<String, Object> graph;
protected void setUp() throws Exception {
super.setUp();
graph = new DirectedGraph<String, Object>();
graph.addEdge("a", "b", null, 3);
graph.addEdge("b", "c", null, 1);
graph.addEdge("a", "c", null, 8);
graph.addEdge("a", "d", null, 3);
graph.addEdge("b", "d", null, 2);
graph.addEdge("c", "b", null, 1);
graph.addEdge("c", "d", null, 2);
graph.addEdge("d", "b", null, 1);
graph.addEdge("a", "e", null, 8);
graph.addEdge("c", "c", null, 2);
}
public void testGraph() {
// System.out.println(graph);
Vertex vertex = graph.getVertex("a");
Assert.assertNotNull(vertex);
Assert.assertEquals(vertex.getValue(), "a");
Assert.assertNull(graph.getVertex("1"));
Edge edge = graph.getEdge("a", "b");
Assert.assertNotNull(edge);
Assert.assertEquals(edge.getWeight(), 3);
edge = graph.getEdge("b", "a");
Assert.assertNull(edge);
DirectedGraph<String, Object>.Path path = graph.getShortestPath("a", "c");
List<DirectedGraph<String, Object>.Edge> edges = path.getEdges();
Assert.assertEquals(edges.size(), 2);
Assert.assertEquals(edges.get(0), graph.getEdge("a", "b"));
Assert.assertEquals(edges.get(1), graph.getEdge("b", "c"));
Assert.assertEquals(path.getWeight(), 4);
DirectedGraph<String, Object>.Path path2 = graph.getShortestPath("b", "e");
Assert.assertNull(path2);
DirectedGraph<String, Object>.Path path3 = graph.getShortestPath("a", "a");
Assert.assertTrue(path3.getWeight() == 0 && path3.getEdges().isEmpty());
DirectedGraph<String, Object>.Path path4 = graph.getShortestPath("c", "c");
Assert.assertTrue(path4.getWeight() == 2 && path4.getEdges().size() == 1);
// System.out.println(path);
}
protected void tearDown() throws Exception {
super.tearDown();
}
}