spring项目实现单元测试过程解析

import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;<br data-filtered="filtered">@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations={    "classpath:application-context.xml",    "classpath:application-database.xml",    "classpath:application-redis.xml"})public class PartRelevanceTest {	@Resource	  private PartRelevanceMapper partRelevanceMapper;	@Test	  public void selectTypeNumOne() {		PartRelevanceTypeNum record = new PartRelevanceTypeNum();		record.setRelCode("2222112");		record.setType("2");		PartRelevanceTypeNum typeNum = partRelevanceMapper.selectTypeNumOne(record);		System.out.println(typeNum==null?"typeNum-数据为空":typeNum.toString());	}}