@Test public void testDatasourceHint() throws Exception { ActivityHint activityHint = new ActivityHint(DatasourceActivity.class); controller.startOrResume(activityHint); TestDataSource initialDS = (TestDataSource) store.getDatasource(); assertNull(initialDS.getDataSourceHint()); ActivityHint nextActivity = new ActivityHint(DatasourceActivity.class); nextActivity.setNextActivityId("other"); nextActivity.setDataSourceHint(() -> "Hallo sauerland!"); nextActivity.setReturnToActivity(activityHint.getNextActivityId()); nextActivity.setReturnToDatasourceHint(() -> "back"); controller.startOrResume(nextActivity); TestDataSource datasource = (TestDataSource) store.getDatasource(); assertEquals("Hallo sauerland!", datasource.getDataSourceHint()); controller.stopCurrent(); assertEquals("back", initialDS.getDataSourceHint()); }