20145329 《Java程序设计》实验二总结

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实验指导教师：娄嘉鹏老师

实验日期：2016.4.12

实验时间：15：30~17：30

实验序号：实验二

实验名称：Java面向对象程序设计

实验目的与要求：

1.初步掌握单元测试和TDD

2.理解并掌握面向对象三要素：封装、继承、多态

3.初步掌握UML建模

4.熟悉S.O.L.I.D原则

5.了解设计模式

实验内容

1.使用TDD的方式实现设计复杂类Complex

2.实验报告中统计自己的PSP

3.实现要有伪代码、产品代码、测试代码

4.总结单元测试的好处

实验过程中

伪代码

定义实部和虚部

默认构造方法

带参数的构造方法

得到实部，得到虚部

得到复数c的实部，得到复数c的虚部

设置实部，设置虚部

两个复数相加，结果返回

两个复数相减，结果返回

两个复数相乘，结果返回

测试代码

import org.junit.Test;

import static org.junit.Assert.*;

public class ComplexNumberTest {

@Test

public void testGetRealPart() throws Exception {

ComplexNumber cc=new ComplexNumber(3,5);

assert cc.m_dRealPart==3:

"testGetRealPart()处理有错误";

}

@Test

public void testGetImaginaryPart() throws Exception {

    ComplexNumber cc=new ComplexNumber(3,5);

    assert cc.m_dImaginaryPart==5:

            "testGetRealPart()处理有错误";

}

@Test

public void testSetRealPart() throws Exception {

    ComplexNumber cc=new ComplexNumber();

    assert cc.m_dRealPart==0:

    "testSetRealPart()处理有错误";

}

@Test

public void testSetImaginaryPart() throws Exception {

    ComplexNumber cc=new ComplexNumber();

     assert cc.m_dImaginaryPart==0:

    "testSetImaginaryPart()处理错误";

}

@Test

public void testComplexAdd() throws Exception {

    ComplexNumber cc=new ComplexNumber(3,5);

    ComplexNumber dd=new ComplexNumber(3,3);

    ComplexNumber ff=cc.ComplexAdd(cc,dd);

    assert ff.m_dRealPart==6&&ff.m_dImaginaryPart==8:

            "ComplexAdd()方法处理错误";

}

@Test

public void testComplexMinus() throws Exception {

    ComplexNumber cc=new ComplexNumber(3,5);

    ComplexNumber dd=new ComplexNumber(3,3);

    ComplexNumber ff=cc.ComplexMinus(cc,dd);

    assert ff.m_dRealPart==0&&ff.m_dImaginaryPart==2:

            "ComplexMinus()方法处理错误";

}

@Test

public void testComplexMulti() throws Exception {

    ComplexNumber cc=new ComplexNumber(3,5);

    ComplexNumber dd=new ComplexNumber(3,3);

    ComplexNumber ff=cc.ComplexMulti(cc,dd);

    assert ff.m_dRealPart==-6&&ff.m_dImaginaryPart==24:

            "ComplexMulti()方法处理错误";

}

@Test

public void testComplexAdd1() throws Exception {

    ComplexNumber cc=new ComplexNumber(3,5);

    ComplexNumber ff=cc.ComplexAdd1(2);

    assert ff.m_dRealPart==5&&ff.m_dImaginaryPart==5:

            "ComplexAdd1()方法处理错误";

}

@Test

public void testComplexMinus1() throws Exception {

    ComplexNumber cc=new ComplexNumber(3,5);

    ComplexNumber ff=cc.ComplexMinus1(2);

    assert ff.m_dRealPart==1&&ff.m_dImaginaryPart==5:

            "ComplexMinus1()方法处理错误";

}

@Test

public void testComplexMulti1() throws Exception {

    ComplexNumber cc=new ComplexNumber(3,5);

    ComplexNumber ff=cc.ComplexMulti1(2);

    assert ff.m_dRealPart==6&&ff.m_dImaginaryPart==10:

            "ComplexMulti1()方法处理错误";

}

}

产品代码

public class ComplexNumber {

double m_dRealPart, m_dImaginaryPart;

public ComplexNumber() {

    this.m_dRealPart = 0;

    this.m_dImaginaryPart = 0;

}

public ComplexNumber(double real, double img) {            this.m_dRealPart = real;

    this.m_dImaginaryPart = img;

}

public double GetRealPart() {

    return this.m_dRealPart;

}        

public double GetImaginaryPart() {

    return this.m_dImaginaryPart;

}        

public double GetRealPart(ComplexNumber c) {

    return c.m_dRealPart;

}

public double GetImaginaryPart(ComplexNumber c) {

    return c.m_dImaginaryPart;

}        

public void SetRealPart(double real) {

    this.m_dRealPart = real;

}

public void SetImagijnPart(double img) {

    this.m_dImaginaryPart = img;

}        

public ComplexNumber ComplexAdd(ComplexNumber a, ComplexNumber b) {

    ComplexNumber temp = new ComplexNumber();        temp.m_dRealPart = a.m_dRealPart + b.m_dRealPart;

    temp.m_dImaginaryPart = a.m_dImaginaryPart + b.m_dImaginaryPart;

    return temp;

}

public ComplexNumber ComplexMinus(ComplexNumber a, ComplexNumber b) {

    ComplexNumber temp = new ComplexNumber();

    temp.m_dRealPart = a.m_dRealPart - b.m_dRealPart;

    temp.m_dImaginaryPart = a.m_dImaginaryPart - b.m_dImaginaryPart;

    return temp;

}

public ComplexNumber ComplexMulti(ComplexNumber a, ComplexNumber b) {

    ComplexNumber temp = new ComplexNumber();

    temp.m_dRealPart = a.m_dRealPart * b.m_dRealPart - a.m_dImaginaryPart * b.m_dImaginaryPart;

    temp.m_dImaginaryPart = a.m_dRealPart * b.m_dImaginaryPart + a.m_dImaginaryPart * b.m_dRealPart;

    return temp;

}

public ComplexNumber ComplexAdd1(double a) {

    this.m_dRealPart = this.m_dRealPart + a;

    return this;

}

public ComplexNumber ComplexMinus1(double a) {

    this.m_dRealPart = this.m_dRealPart - a;

    return this;

}

public ComplexNumber ComplexMulti1(double a) {

    this.m_dRealPart = this.m_dRealPart * a;

    this.m_dImaginaryPart = this.m_dImaginaryPart * a;

    return this;

}

public String toString(){

    return this.m_dRealPart+"+"+this.m_dImaginaryPart+"i";

}