i have solved this problem by using NonFacesRequest, i pasted the codes here, hope it will be helpful for someone : @Test public void testChangeDataset() throws Exception { new NonFacesRequest() { @Override protected void invokeApplication() { UserBean userBean = (UserBean) Component .getInstance(UserBean.class); userBean.setDatasetId(0); this.invokeMethod("#{userBean.changeDropdown}"); Dataset set = userBean.getCurrentDataset(); assert set!=null; } }.run(); } View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4053797#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...