/**
   * Tests the initial enablement of the zoom toolbar entry. See Bugzilla 110815.
   *
   * @throws Exception
   */
  public void testZoomToolbarEnablement() throws Exception {

    getTestFixture().openDiagram();

    IContributionItem[] items =
        ((IEditorSite) getDiagramWorkbenchPart().getSite())
            .getActionBars()
            .getToolBarManager()
            .getItems();
    boolean foundIt = false;
    for (int i = 0; i < items.length; i++) {
      IContributionItem item = items[i];
      if (item instanceof ZoomContributionItem) {
        foundIt = true;
        assertTrue(item.isEnabled());
      }
    }
    assertTrue(foundIt);
  }
 /** @see IContributionItem#isEnabled() */
 @Override
 public boolean isEnabled() {
   return item.isEnabled();
 }