== 单元测试应用示例——测试domain层对象 ==
推广来源系统中，设计了一个对象cn.com.pcgames.gamehall2.domain.TmpAdRequest,该对象是标准的java bean对象,该对象的作用是保存用户每次请求注册引导页的数所据信息，包括用户ip(ip),推广来源id(srcid),[[BR]]
游戏id(gameid),创建时间(createAt),请求referer(referer).
{{{ #!java
  	private String ip;
	private long srcid;
	private Date createAt;
	private long gameid;
	
	private String referer;

	public String getReferer() {
		return referer;
	}
	
	public void setReferer(String referer) {
		this.referer = referer;
	}
	
	public String getIp() {
		return ip;
	}
	public void setIp(String ip) {
		this.ip = ip;
	}
	
	public long getSrcid() {
		return srcid;
	}
	public void setSrcid(long srcid) {
		this.srcid = srcid;
	}
	public Date getCreateAt() {
		return createAt;
	}
	public void setCreateAt(Date createAt) {
		this.createAt = createAt;
	}
	
	public long getGameid() {
		return gameid;
	}
	public void setGameid(long gameid) {
		this.gameid = gameid;
	}
}}}


后台统计时，需要区分每次请求，是不是重复的请求，所以重写了该类的equals(),hashCode()方法
{{{ #!java
   @Override
	public boolean equals(Object obj) {
		if(obj == null){
			return false;
		}
		if(obj instanceof TmpAdRequest){
			TmpAdRequest adRequest = (TmpAdRequest)obj;
			EqualsBuilder equalsBuilder = new EqualsBuilder();
			return equalsBuilder.append(this.ip, adRequest.getIp()).append(this.srcid, adRequest.getSrcid()).append(this.referer, adRequest.getReferer()).isEquals();
			
		}else{
			return false;
		}
	}
	@Override
	public int hashCode() {
		HashCodeBuilder builder = new HashCodeBuilder(17,37);
		return builder.append(this.srcid).append(this.ip).append(this.referer).toHashCode(); 
	}

}}}
如何验证我们的重写的equals的正确性呢?我们书写单元测试来验证
{{{ #!java
public class TmpAdRequestTest {
	
	@Test
	public void equals() throws Exception {
		
		TmpAdRequest ad_request1 = new TmpAdRequest();
		ad_request1.setIp("192.168.20.92");
		ad_request1.setSrcid(1L);
		ad_request1.setGameid(1);
		
		Date date = org.apache.commons.lang.time.DateUtils.parseDate("2011-12-12 23:23:23", new String[]{"yyyy-MM-dd HH:mm:ss"});
		ad_request1.setCreateAt(date);
		
		TmpAdRequest ad_request2 = new TmpAdRequest();
		ad_request2.setIp("192.168.20.92");
		ad_request2.setSrcid(1L);
		ad_request2.setGameid(1);
		ad_request2.setCreateAt(new Date());
		
		List<TmpAdRequest> list = new ArrayList<TmpAdRequest>();
		
                //ad_request1与ad_request2对象有相同的srcid,referer,ip,断言ad_request1.equals(ad_request2)
		Assert.assertTrue(ad_request1.equals(ad_request2));
		
		Assert.assertEquals(ad_request1, ad_request2);
		
		if(!list.contains(ad_request1)){
			list.add(ad_request1);
		}
		
		if(!list.contains(ad_request2)){
			list.add(ad_request2);
		}
		
               //将ad_request1与ad_request2加入同一个list以后，断言list.size() == 1
		Assert.assertTrue(list.size() == 1);
		
		
	}
}
}}}