@Test
  public void canMoveToPreviousEditorInPluralForm() {
    // Given: current editor index is 1
    presenter.setStatesForTesting(selectedTU.getId(), 1, display);

    // When:
    presenter.moveToPreviousEntry();

    // Then:
    verify(display).focusEditor(0);
    verifyZeroInteractions(eventBus);
  }
  @Test
  public void canMoveToPreviousEntry() {
    // Given: default current editor index is 0
    TargetContentsPresenter spyPresenter = spy(presenter);
    doNothing().when(spyPresenter).savePendingChangesIfApplicable();

    // When:
    spyPresenter.moveToPreviousEntry();

    // Then:
    verify(spyPresenter).savePendingChangesIfApplicable();
    verify(eventBus).fireEvent(NavTransUnitEvent.PREV_ENTRY_EVENT);
  }