CustomGraphTest.java

package i5.las2peer.services.ocd.graphs;

import static org.junit.Assert.*;
import i5.las2peer.services.ocd.graphs.CustomGraph;

import org.junit.Test;

import y.base.Edge;
import y.base.Node;

public class CustomGraphTest {

	@Test
	public void testCopyConstructor() {
		CustomGraph graph = new CustomGraph();
		Node node0 = graph.createNode();
		Node node1 = graph.createNode();
		graph.createEdge(node0, node1);
		graph.createEdge(node1, node0);
		graph.createEdge(node0, node0);
		Node node2 = graph.createNode();
		graph.createEdge(node0, node2);
		graph.createEdge(node1, node2);
		Edge edge5 = graph.createEdge(node2, node1);
		graph.setEdgeWeight(edge5, 5);
		CustomGraph copy = new CustomGraph(graph);
		assertEquals(graph.nodeCount(), copy.nodeCount());
		assertEquals(graph.edgeCount(), copy.edgeCount());
		Edge copyEdge5 = copy.getEdgeArray()[5];
		assertEquals(5, copy.getEdgeWeight(copyEdge5), 0);
		graph.setEdgeWeight(edge5, 2);
		assertEquals(5, copy.getEdgeWeight(copyEdge5), 0);
		copy.removeEdge(copyEdge5);
		assertEquals(graph.edgeCount() - 1, copy.edgeCount());
	}

	@Test(expected = NullPointerException.class)
	public void testEdgeRemoval() {
		CustomGraph graph = new CustomGraph();
		Node node0 = graph.createNode();
		Node node1 = graph.createNode();
		graph.createEdge(node0, node1);
		graph.createEdge(node1, node0);
		graph.createEdge(node0, node0);
		Node node2 = graph.createNode();
		graph.createEdge(node0, node2);
		graph.createEdge(node1, node2);
		Edge edge5 = graph.createEdge(node2, node1);
		graph.setEdgeWeight(edge5, 5);
		assertEquals(6, graph.edgeCount());
		graph.removeEdge(edge5);
		assertEquals(5, graph.edgeCount());
		graph.getEdgeWeight(edge5);
	}
	
}