@Override public boolean deleteTemplate(String tempateId) { List<PushPlanMsgDTO> pushPlanMsgDTos = pushPlanSetMapper.queryBindValidPushPlan(tempateId); if(!CollectionUtils.isEmpty(pushPlanMsgDTos)){ throw BizExeeption.error( warnningMessage:"该计划绑定了生效中的营销推送计划，不允许修改!");} smsTemplateMapper.deleteTemplate(tempateId); return true; } 根据以上代码生成单元测试案例，需要使用mockito.lenient().when(xx).thenReturn，目前已经写过的有@InjectMocks SmsTemplateServiceImpl smsTemplateService; @Mock SmsTemplateMapper smsTemplateMapper; @Mock PushPlanSetMapper pushPlanSetMapper;

可以使用 `Mockito.doThrow` 来模拟抛出异常的情况，例如：

@Test
public void testDeleteTemplateThrowsException() {
    // Mock dependencies
    SmsTemplateMapper smsTemplateMapper = Mockito.mock(SmsTemplateMapper.class);
    PushPlanSetMapper pushPlanSetMapper = Mockito.mock(PushPlanSetMapper.class);
    List<PushPlanMsgDTO> pushPlanMsgDTos = new ArrayList<>();
    pushPlanMsgDTos.add(new PushPlanMsgDTO());
    Mockito.when(pushPlanSetMapper.queryBindValidPushPlan(Mockito.anyString())).thenReturn(pushPlanMsgDTos);

    // Create the object under test
    MyService myService = new MyService(smsTemplateMapper, pushPlanSetMapper);

    // Invoke the method and expect an exception
    assertThrows(BizExeeption.class, () -> myService.deleteTemplate("templateId"));

    // Verify that the template was not deleted
    Mockito.verify(smsTemplateMapper, Mockito.never()).deleteTemplate(Mockito.anyString());
}

这里模拟了 `queryBindValidPushPlan` 方法返回一个包含一个元素的列表，从而导致抛出业务异常。使用 `Mockito.never()` 来验证模板没有被删除。