Nextday、Nextyear的Junit白盒测试

package yanhongyun;

public class NextDay

{

private int year;

private int month;

private int day;

public NextDay()

}

public void set(int year,int month,int day)

{

if (year<0)

this.year=0;

else

this.year=year;

if (month<1 || month>12)

this.month=1;

}

private int lastDay(int year,int month)

{

if (month==1 || month==3 || month==5 ||month==7 || month==8 || month==10||

month==12)

{

return 31;

}

else if (month==2)