测试驱动开发（TDD）入门讲解及代码实例

package com.test; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; public class Person { // 根据测试来修改的方法 protected Date birthdate; /* * 　　 public int getAge() { return 0; } */ public void setBirthDate(Date aBirthDate) { this.birthdate = aBirthDate; } // New getAge() method public int getAge() { if (birthdate == null) return 0; /* * else { int yearToday = Calendar.getInstance().get(Calendar.YEAR); * * Calendar calendar = new GregorianCalendar(); * calendar.setTime(birthdate); int birthYear = * calendar.get(Calendar.YEAR); //返回用户年龄 return yearToday - birthYear; } */ else { int yearToday = Calendar.getInstance().get(Calendar.YEAR); Calendar calendar = new GregorianCalendar(); calendar.setTime(birthdate); int birthYear = calendar.get(Calendar.YEAR); if (yearToday == birthYear) return yearToday - birthYear; else if((yearToday > birthYear)){ return yearToday - birthYear; }else{ return yearToday - birthYear; } } } }