@Test
 public void canDoActionFailsOnNoBrick() {
   cmd = spy(createTestCommand2(volumeId4));
   prepareMocks(cmd);
   assertFalse(cmd.canDoAction());
 }
 @Test
 public void canDoActionFailesOnDownVolume() {
   cmd = spy(createTestCommand1(volumeId2));
   prepareMocks(cmd);
   assertFalse(cmd.canDoAction());
 }
 @Test
 public void canDoActionFailsOnNull() {
   cmd = spy(createTestCommand1(null));
   prepareMocks(cmd);
   assertFalse(cmd.canDoAction());
 }
 @Test
 public void canDoActionSucceedsOnUpVolume() {
   cmd = spy(createTestCommand1(volumeId1));
   prepareMocks(cmd);
   assertTrue(cmd.canDoAction());
 }