Software Testing, Lab 1

一．实验要求:

1. Install Junit(4.12), Hamcrest(1.3) with Eclipse
2. Install Eclemma with Eclipse
3. Write a java program for the triangle problem and test the program with Junit.

a)       Description of triangle problem:

Function triangle takes three integers a,b,c which are length of triangle sides; calculates whether the triangle is equilateral, isosceles, or scalene.

二．实验过程

1．JUnit、Hamcrest的安装：

从网上下载junit-4.12.jar 和 hamcrest-all-1.3.jar文件。

2.

1)在Eclipse中新建项目 （File - new - javaproject）

右键点击项目，选择Build Path - Configure Build Path

然后点击Libraries - Add External JARs，选择jar包打开，确认

2)Eclemma的安装：

在菜单栏选择Help - Eclipse Marketplace，搜索Eclemma，点击Install安装，重启Eclipse

3.代码编写

1）triangle.java

package hw;

public class triangle {

    public static void main(String[] args) {

       // TODO Auto-generated method stub

    }

    public int tri(int a,int b,int c){

       int m=0;

       if(a+b>c&&a+c>b&&b+c>a){

           if(a==b&&b==c) m=1;  //equilateral

           else if(a==b||b==c||a==c) m=2;  //isosceles

           else m=3;  //scalene

       }

       else m=-1;

       return m;

    }

}

2）triangleTest.java

package hw;

import static org.junit.Assert.*;

import org.junit.Test;

public class triangleTest {

    triangle t = new triangle();

    @Test

    public void test() {

       int f = t.tri(1,1,1);

       assertEquals( 1 , f );

       f = t.tri(2,2,3);

       assertEquals( 2 , f );

       f = t.tri(2,3,4);

       assertEquals( 3 , f );

       f = t.tri(1,1,4);

       assertEquals( -1 , f );

    }

}

三．实验结果

各种情况的测试用例各一个，测试结果均通过

equilateral triangle返回1， isosceles triangle返回2，scalene triangle返回3，不能构成三角形则返回-1

测试结果如图