@Test
public void pipelineEmptyListTest() {

    List<Map<String, String>> emptyList = new LinkedList<>();
    SetAssignExtension setAssign = new SetAssignExtension();
    SetAssignExtension.SetAssignTag setAssignTag = new SetAssignExtension.SetAssignTag();
    setAssignTag.setName("var_out_test");
    setAssignTag.setSet("A,B,C,D,E");
    List<Map<String, String>> processedList = setAssign.pipelinePossibleStates(setAssignTag, emptyList);
    Assert.assertNotNull(processedList);
    Assert.assertEquals(0, processedList.size());
}