@Test(expectedExceptions = ZusammenException.class/*,
  expectedExceptionsMessageRegExp = ITEM_NOT_EXIST*/)
public void testUpdateNonExisting() {

    Id itemId = new Id();
    Info info = new Info();
    doReturn(new Response<>(false)).when(stateAdaptorMock).isItemExist(context, itemId);
    doReturn(new Response<>(Void.TYPE)).when(stateAdaptorMock)
            .updateItem(eq(context), eq(itemId), eq(info), any(Date.class));
    doReturn(new Response<>(Void.TYPE)).when(collaborationAdaptorMock).updateItem(context, itemId, info);
    itemManagerImpl.update(context, itemId, info);
}