Java如何對類進行單元測試（unittest）

Java如何對類進?單元測試（unittest）Java對類進?單元測試每?個類可以有?main?法。這是?個常?于對類單元測試（unittest）的?法。例如，可以在Employee類中添加?個main?法：classEmployee{publicEmployee(Stringn,doubles,intyear,intmonth,intday){name=n;salary=s;LocalDAtehireDay=LocalDate.now(year,month,day);}······(省略)publicstaticvoidmain(String[]args){Employeee=newEmployee("Herry",5000,2003,3,21);System.out.println(e.getName()+""+e.getSalary());}}如果想要獨?地測試Employee類，只需要執(zhí)?javaEmployee如果Employee類只是?個更?型的應?程序的?部分，就可以使?下?這條語句運?程序javaApplicationjavaApplicationEmployee類的main?法永遠不會執(zhí)?。完整程序：packageEmployee;importjava.time.LocalDate;/***《Java核?技術卷I》P104：程序清單4-2*EmployeeTest/EmployeeTest.java*@authorGordo_li**/publicclassEmployeeTest{publicstaticvoidmain(String[]args){//TODOAuto-generatedmethodstubEmployee[]staff=newEmployee[3];staff[0]=newEmployee("Carl",75000,1987,12,15);staff[1]=newEmployee("Harry",50000,1989,10,1);staff[2]=newEmployee("Tony",40000,1990,3,15);for(Employeee:staff)e.raiseSalary(5);for(Employeee:staff)System.out.println("name="+e.getName()+",salary="+e.getSalary()+",hireDay="+e.getHireDay());}}classEmployee{privateStringname;privatedoublesalary;privateLocalDatehireDay;publicEmployee(Stringn,doubles,intyear,intmonth,intday){name=n;salary=s;LocalDatehrieDay=LocalDate.of(year,month,day);}publicStringgetName(){returnname;}publicdoublegetSalary(){returnsalary;}publicLocalDategetHireDay(){returnhireDay;}publicvoidraiseSalar