实验报告封面

实验内容及步骤

实验一

1.试验要求:
参考 (http://www.cnblogs.com/rocedu/p/6371315.html#SECUNITTEST) 完成单元测试的学习。
提交最后三个JUnit测试用例(正常情况,错误情况,边界情况)都通过的截图,截图上要有画图加水印,输入自己的学号。
本提交点考查JUnit会不会使用,测试用例至少要包含正常情况,错误情况,边界情况的测试。

2.实验截图:

3.试验代码

public class MyUtil{
    public static String percentage2fivegrade(int grade){
        //如果成绩小于0,转成“错误”
        if ((grade < 0))
            return "错误";
            //如果成绩小于60,转成“不及格”
        else if (grade < 60)
            return "不及格";
            //如果成绩在60与70之间,转成“及格”
        else if (grade < 70)
            return "及格";
            //如果成绩在70与80之间,转成“中等”
        else if (grade < 80)
            return "中等";
            //如果成绩在80与90之间,转成“良好”
        else if (grade < 90)
            return "良好";
            //如果成绩在90与100之间,转成“优秀”
        else if (grade <= 100)
            return "优秀";
            //如果成绩大于100,转成“错误”
        else
            return "错误";
    }
}
import org.junit.Test;
import junit.framework.TestCase;
public class MyUtilTest extends TestCase {
    @Test
    public void testNormal() {
        assertEquals("不及格", MyUtil.percentage2fivegrade(55));
        assertEquals("及格", MyUtil.percentage2fivegrade(65));
        assertEquals("中等", MyUtil.percentage2fivegrade(75));
        assertEquals("良好", MyUtil.percentage2fivegrade(85));
        assertEquals("优秀", MyUtil.percentage2fivegrade(95));
    }
    @Test
    public void testExceptions(){
        assertEquals("错误", MyUtil.percentage2fivegrade(-55));
        assertEquals("错误", MyUtil.percentage2fivegrade(120));
    }
    @Test
    public void testBoundary(){
        assertEquals("不及格", MyUtil.percentage2fivegrade(0));
        assertEquals("及格", MyUtil.percentage2fivegrade(60));
        assertEquals("中等", MyUtil.percentage2fivegrade(70));
        assertEquals("良好", MyUtil.percentage2fivegrade(80));
        assertEquals("优秀", MyUtil.percentage2fivegrade(90));
        assertEquals("优秀", MyUtil.percentage2fivegrade(100));
    }

}

实验二

1.实验要求:
参考 [积极主动敲代码,使用JUnit学习Java](http://www.cnblogs.com/rocedu/p/4837092.html
以TDD的方式研究学习StringBuffer
提交你的单元测试用例和测试通过的截图,截图要加上学号水印
测试自己会不会写JUnit测试用例

2.实验截图:

3.试验代码:

public class StringBufferDemo{
  public static void main(String [] args){
              StringBuffer buffer = new StringBuffer();
              buffer.append('S');
              buffer.append("tringBuffer");
        //     System.out.println(buffer.charAt(1));
               System.out.println(buffer.capacity());
        //     System.out.println(buffer.indexOf("tring12345"));
             System.out.println("buffer = " + buffer.toString());
            System.out.println(buffer.length());
         }
}
import org.junit.Test;
import junit.framework.TestCase;
public class StringBufferDemoTest extends TestCase {

 StringBuffer a =new  StringBuffer ("abcdefghijkl");
 StringBuffer b =new  StringBuffer ("abcdefghijklabcdefghijkl");
 StringBuffer c =new  StringBuffer ("abcdefghijklabcdefghijklabcdefghijkl");

 @Test
    public void testcharAt() throws Exception{
     assertEquals('a',a.charAt(0));
     assertEquals('f',b.charAt(5));
  assertEquals('l',b.charAt(11));
 }
 @Test
 public void testcapacity() throws Exception{
  assertEquals(28,a.capacity());
  assertEquals(40,b.capacity());
  assertEquals(52,c.capacity());

 }
 @Test
 public void testlength() throws Exception{
  assertEquals(12,a.length());
  assertEquals(24,b.length());
  assertEquals(36,c.length());
 }

实验三

1.实验要求:
参考实验二 Java面向对象程序设计
对设计模式示例进行扩充,体会OCP原则和DIP原则的应用,初步理解设计模式
用自己的学号%6进行取余运算,根据结果进行代码扩充:

0:让系统支持Byte类,并在MyDoc类中添加测试代码表明添加正确,提交测试代码和运行结的截图,加上学号水印
1:让系统支持Short类,并在MyDoc类中添加测试代码表明添加正确,提交测试代码和运行结的截图,加上学号水印
2:让系统支持Boolean类,并在MyDoc类中添加测试代码表明添加正确,提交测试代码和运行结的截图,加上学号水印
3:让系统支持Long类,并在MyDoc类中添加测试代码表明添加正确,提交测试代码和运行结的截图,加上学号水印
4:让系统支持Float类,并在MyDoc类中添加测试代码表明添加正确,提交测试代码和运行结的截图,加上学号水印
5:让系统支持Double类,并在MyDoc类中添加测试代码表明添加正确,提交测试代码和运行结的截图,加上学

2.实验截图:

3.试验代码:

// Server Classes 
abstract class Data {
    abstract public void DisplayValue();
}
class Integer extends  Data {
    int value;
    Integer() {
        value=100;
    }
    public void DisplayValue(){
        System.out.println (value);
    }
}
// Pattern Classes 
abstract class Factory {
    abstract public Data CreateDataObject();
}
class IntFactory extends Factory {
    public Data CreateDataObject(){
        return new Integer();
    }
}
class Short extends Data{

    short value;
    Short(){
        value=127;
    }
    public void DisplayValue(){
        System.out.println (value);
    }
}
class ShortFactory extends Factory {
    public Data CreateDataObject(){
        return new Short();
    }
}


//Client classes 
class Document {
    Data pd;
    Document(Factory pf){
        pd = pf.CreateDataObject();
    }
    public void DisplayData(){
        pd.DisplayValue();
    }
}
//Test class
public class MyDos {
    static Document d;
    public static void main(String[] args) {
        d = new Document(new IntFactory());
        d.DisplayData();
        d = new Document(new ShortFactory());
        d.DisplayData();
    }
}

实验四

1.实验要求:
提交:单元测试代码和运行成功截图及码云上代码链接,截图要加上学号水印
任务:以TDD的方式开发一个复数类Complex,要求如下:

2.实验截图:

3.试验代码:

public class Complex {
    public double x;
    public double y;
    public  Complex(double x,double y){
        this.x=x;
        this.y=y;
    }
    public double getx(Complex a){
        return a.x;
    }
    public double gety(Complex a){
        return a.y;
    }
    Complex Complexadd(Complex a){
        return new Complex(this.x+a.x,this.y+a.y);

    }
    Complex ComplexSub(Complex a){
        return new Complex(this.x-a.x,this.y-a.y);

    }
    Complex ComplexMul(Complex a){
        return new Complex(this.x*a.x-this.y*a.y,this.x*a.y+this.y*a.x);

    }
    Complex ComplexDiv(Complex a){
        return new Complex
                ((this.x*a.x+this.y*a.y)/(a.x*a.x+a.y*a.y),(this.y*a.x-this.x*a.y)/(a.x*a.x+a.y*a.y));

    }
    public void  inputComplex(Complex a){
        System.out.println(a.getx(a));
        System.out.println(a.gety(a));
    }
}
import org.junit.Test;

import junit.framework.TestCase;

public class ComplexTest extends TestCase {

        @Test
        public void testadd(){
            double x = 10;
            double y = 30;
            Complex a = new Complex(x, y);
            double x2 = 20;
            double y2 = 90;
            Complex b = new Complex(x2, y2);
            a = a.Complexadd(b);

            System.out.println(a.x);

            System.out.println(a.y);
        }
        @Test
        public void testsub(){
            double x = 10;
            double y = 50;
            Complex a = new Complex(x, y);
            double x2 = 70;
            double y2 = 60;
            Complex b = new Complex(x2, y2);
            a = a.ComplexSub(b);

            System.out.println(a.x);

            System.out.println(a.y);
        }
        @Test
        public void testDiv(){
            double x = 40;
            double y = 40;
            Complex a = new Complex(x, y);
            double x2 = 10;
            double y2 = 50;
            Complex b = new Complex(x2, y2);
            a = a.ComplexDiv(b);

            System.out.println(a.x);

            System.out.println(a.y);
        }
        @Test
        public void testmul(){
            double x = 20;
            double y = 40;
            Complex a = new Complex(x, y);
            double x2 = 30;
            double y2 = 50;
            Complex b = new Complex(x2, y2);
            a = a.ComplexMul(b);

            System.out.println(a.x);

            System.out.println(a.y);
        }

    }

试验五

1.试验要求
使用WhiteStarUML对实验二中的代码进行建模,发类图的截图,加上学号水印。
参考http://www.cnblogs.com/rocedu/p/6736847.html

类图中只少两个类。

2.试验截图

实验中出现的问题与解决方法

问题:

实验三种定义哦short类后,变量输入值过大

解决方法:

根据short 类的数值范围重新定义

PSP时间

步骤 耗时 百分比
需求分析 30min 18.75%
设计 40min 25%
代码实现 30min 18.75%
测试 20min 12.5%
分析总结 40min 25%