给这个方法添加单元测试： public List<String> publishMessage(List<Integer> tdsStpIdList) throws CisTStpException{ List<String> messageList = new ArrayList<>(); for(Integer tdsStpId : tdsStpIdList) { String message = null; CisPubTds cisPubTds = monitorDao.getTdsPubRequestById(tdsStpId); if (cisPubTds == null) { message = CisTStpConstants.MSG_1; } if (cisPubTds != null && cisPubTds.getMessage() == null) { message = CisTStpConstants.MSG_2; } if (cisPubTds != null && cisPubTds.getIsStpEd() != null && cisPubTds.getIsStpEd() > 0) { message = CisTStpConstants.MSG_3; } if(message != null){ log.info(message+"{}", tdsStpId); messageList.add(tdsStpId + CisTStpConstants.COLON + message); continue; } boolean isPublished = publish(cisPubTds); if(message != null && isPublished){ log.info(CisTStpConstants.MSG_4+"{}", tdsStpIdList); messageList.add(tdsStpId + CisTStpConstants.COLON + CisTStpConstants.MSG_4); }else { log.info(CisTStpConstants.MSG_5+"{}", tdsStpId); messageList.add(tdsStpId + CisTStpConstants.COLON + CisTStpConstants.MSG_5); } }

好的，下面是一个可能的单元测试实现：

import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import static org.mockito.Mockito.*;

public class PublishMessageTest {

    @Mock
    private MonitorDao monitorDao;

    @Mock
    private CisPubTds cisPubTds;

    @InjectMocks
    private YourClassName yourClassName;

    @Before
    public void setUp() {
        MockitoAnnotations.initMocks(this);
    }

    @Test
    public void testPublishMessage() throws CisTStpException {
        // test data
        List<Integer> tdsStpIdList = new ArrayList<>();
        tdsStpIdList.add(1);
        tdsStpIdList.add(2);

        // mock the monitorDao
        when(monitorDao.getTdsPubRequestById(1)).thenReturn(null);
        when(monitorDao.getTdsPubRequestById(2)).thenReturn(cisPubTds);
        when(cisPubTds.getMessage()).thenReturn(null);
        when(cisPubTds.getIsStpEd()).thenReturn(1);

        // execute the method
        List<String> messageList = yourClassName.publishMessage(tdsStpIdList);

        // verify the results
        Assert.assertEquals("The error message list should have two elements", 2, messageList.size());
        Assert.assertEquals("The first element should have the correct message", "1:" + CisTStpConstants.MSG_1, messageList.get(0));
        Assert.assertEquals("The second element should have the correct message", "2:" + CisTStpConstants.MSG_3, messageList.get(1));
        verify(monitorDao, times(2)).getTdsPubRequestById(anyInt());
        verify(cisPubTds, times(1)).getMessage();
        verify(cisPubTds, times(2)).getIsStpEd();
    }
}

这个测试使用了 Mockito 框架来 mock 相关的对象，并且验证了当 `monitorDao.getTdsPubRequestById()` 方法返回不同结果时，`publishMessage()` 方法是否会返回正确的错误信息列表。测试中使用了 `assertEquals()` 和 `verify()` 方法来验证结果和行为是否如预期。需要注意的是，这个测试只覆盖了一部分情况，你需要根据实际情况增加更多的测试用例。