@Test
  public void testAccessToLayerGroup() throws Exception {
    CatalogFilterAccessManager mgr = setupAccessManager();

    SecureCatalogImpl sc = new SecureCatalogImpl(catalog, mgr) {};
    assertEquals(3, sc.getLayerGroups().size());

    WorkspaceInfo ws = sc.getWorkspaceByName("topp");
    LocalWorkspace.set(ws);
    assertEquals(3, sc.getLayerGroups().size());
    LocalWorkspace.remove();

    ws = sc.getWorkspaceByName("nurc");
    LocalWorkspace.set(ws);
    assertEquals(1, sc.getLayerGroups().size());
    assertEquals("layerGroup", sc.getLayerGroups().get(0).getName());
    LocalWorkspace.remove();
  }