@Test( expected = EnvironmentManagerException.class )
public void testExecute() throws Exception
{

    step.execute();
    verify( PEER_UTIL ).addPeerTask( any( PeerUtil.PeerTask.class ) );
    doReturn( true ).when( peerTaskResult ).hasSucceeded();
    step.execute();
    doReturn( true ).when( keyResults ).hasFailures();
    step.execute();
}