@Test
public void testExecute_twoAgentStatus() throws Exception {

	AgentStatusCommand cmd = new AgentStatusCommand();
	AgentMessagingInterface am1 = Mockito.mock( AgentMessagingInterface.class );
	AgentMessagingInterface am2 = Mockito.mock( AgentMessagingInterface.class );
	cmd.agents = Arrays.asList( am1, am2 );
	Assert.assertNull( cmd.execute());
	Mockito.verify( am1, Mockito.only()).agentStatus();
	Mockito.verify( am2, Mockito.only()).agentStatus();
}