Added a test to agent communication plugin

src/main/java/org/fogbowcloud/green/agent/AgentCommunicationComponent.java

@@ -43,6 +43,10 @@ public class AgentCommunicationComponent {
 			LOGGER.fatal("The configuration file is not correct", e);
 		}
 	}
+	
+	protected void setClient(XMPPClient client) {
+		this.client = client;
+	}
 
 	public Boolean init() {
 		XEP0077 register = new XEP0077();
@@ -103,7 +107,7 @@ public class AgentCommunicationComponent {
 		return true;
 	}
 
-	public void sendIamAliveSignal() {	
+	public IQ sendIamAliveSignal() {	
 		IQ iq = new IQ(Type.get);
 		iq.setTo(this.prop.getProperty("xmpp.component"));
 		iq.getElement().addElement("query", NAMESPACE);
@@ -117,6 +121,7 @@ public class AgentCommunicationComponent {
 				.setText(this.prop.getProperty("host.name"));
 		client.getConnection().sendPacket(iq);
 		LOGGER.info("IAmAlive signal sent to " + iq.getTo());
+		return iq;
 	}
 
 	public void start() {

src/main/java/org/fogbowcloud/green/server/core/plugins/openstack/OpenStackInfoPlugin.java

@@ -37,13 +37,14 @@ public class OpenStackInfoPlugin implements CloudInfoPlugin {
 				.authenticate();
 	}
 	
-	private List<String> getHostsName() {
+	public List<String> getHostsName() {
 		List<? extends Hypervisor> hypervisors = os().compute().hypervisors()
 				.list();
 		List<String> hostsName = new LinkedList<String>();
 		for (Hypervisor hypervisor : hypervisors) {
 			hostsName.add(hypervisor.getHypervisorHostname());
 		}
+		System.out.println(hostsName.toString());
 		return hostsName;
 	}
 

src/test/java/org/fogbowcloud/green/agent/TestAgentCommunicationComponent.java

+package org.fogbowcloud.green.agent;
+
+import java.util.Properties;
+
+import org.junit.Assert;
+import org.jamppa.client.XMPPClient;
+import org.jivesoftware.smack.XMPPConnection;
+import org.junit.Test;
+import org.mockito.Mockito;
+import org.xmpp.packet.IQ;
+
+public class TestAgentCommunicationComponent {
+
+
+	private XMPPClient createXMPPClientMock() {
+		XMPPClient client = Mockito.mock(XMPPClient.class);
+		Mockito.doReturn(Mockito.mock(XMPPConnection.class)).when(client)
+				.getConnection();
+		return client;
+	}
+
+	private Properties createPropMock(String hostName, String ip, 
+			String macAddress) {
+		Properties prop = Mockito.mock(Properties.class);
+		Mockito.doReturn(ip).when(prop).getProperty("host.ip");
+		Mockito.doReturn(hostName).when(prop).getProperty("host.name");
+		Mockito.doReturn(macAddress).when(prop).getProperty("host.macAddress");
+		return prop;
+	}
+
+	@Test
+	public void testSendIamAliveSignal() {
+		XMPPClient client = createXMPPClientMock();
+		Properties prop = createPropMock("host", "123.456.78.9", "A1:B2:C3:D4:E5:67");
+		AgentCommunicationComponent acc = new AgentCommunicationComponent(prop);
+		acc.setClient(client);
+		IQ expectedIQ = acc.sendIamAliveSignal();
+		Assert.assertEquals(expectedIQ.getElement().element("query").elementText("ip"),"123.456.78.9");
+		Assert.assertEquals(expectedIQ.getElement().element("query").elementText("hostName"),"host");
+		Assert.assertEquals(expectedIQ.getElement().element("query").elementText("macAddress"),"A1:B2:C3:D4:E5:67");
+	}
+
+}