/**
  * Cmd_ null headcurrent.
  *
  * @throws InvalidElementException the invalid element exception
  */
 @Test
 public void cmd_NullHEADCURRENT() throws InvalidElementException {
   final Stage stage = new Stage();
   TH.setupLogging();
   stage.createLogicalUnit("lux");
   CommandCLI cmd = new LUCmdStatus(stage, "lux");
   Assert.assertTrue("CMDLUStatus Succeeds.", cmd.execute());
   cmd = new LUCmdRevert(stage, "lux", 1, 0);
   Assert.assertFalse("CMDLURevert Fails.", cmd.execute());
 }
 /**
  * Setup test.
  *
  * @throws InvalidElementException the invalid element exception
  */
 @Before
 public void setupTest() throws InvalidElementException {
   TH.setupTestingEnvironment(true, true);
   this.stage = new Stage();
   TH.setupLogging();
 }
 /**
  * Start class test.
  *
  * @throws FileNotFoundException the file not found exception
  */
 @BeforeClass
 public static void startClassTest() throws FileNotFoundException {
   TH.setupLogging();
   Logger.getInstance().info("LOGICAL UNIT COMMANDS TEST");
   UIWriter.setOutStream(new PrintStream(new FileOutputStream(TH.clioFile)));
 }