软件测试lab1: 利用Junit, Hamcrest及Eclemma进行软件测试

Homework Task

Install Junit(4.12), Hamcrest(1.3) with Eclipse

Install Eclemma with Eclipse

Write a java program for the triangle problem and test the program with Junit.

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.

1. Task 1

右击project，点击properties,在弹出的面板中选择Java Build Path

选择Libraries, 点击Add External JARs, 找到Junit-4.12.jar 及hamcrest-all-1.3.jar包的路径，选择这两个jar包后选择OK即可

2. Task 2

对于Eclipse3.6+的版本，最简洁的方法是用Eclipse Marketplace Client，具体方法如下：

1. 在Eclipse中选择Help → \rightarrow Eclipse Marketplace

2. 搜索 “EclEmma”

3. 在”EclEmma Java Code Coverage” 中选择安装即可

4. 之后顺着Installation Wizard的要求即可

其它安装方法详见官网：

http://eclemma.org/installation.html

Task3

创建一个Triangle类，用于判断输入的三角形的种类

public class Triangle {
public int triangle(int a, int b, int c){
// return parameters:
// 0 stands for non-triangle
// 1 stands for equilateral
// 2 stands for isosceles
// 3 stands for scalene
if(isTriangle(a, b, c)){
if(a == b && b == c){
return 1;
}else if(a == b || b == c || a == c){
return 2;
}else{
return 3;
}
}else{
return 0;
}
}
private boolean isTriangle(int a, int b, int c){
if(a + b > c && a + c > b && b + c > a){
return true;
}else{
return false;
}
}
}

Triangle类中有两个函数，其中一个辅助函数用于判断输入的三边是否可构成一三角形

2. 编写测试类TestTriangle及测试用例

import org.junit.Test;
import static org.junit.Assert.*;
public class TestTriangle {
private Triangle tri;
@Test
public void test(){
tri = new Triangle();
assertEquals(0, tri.triangle(1, 2, 3));
assertEquals(1, tri.triangle(2, 2, 2));
assertEquals(2, tri.triangle(2, 2, 3));
assertEquals(3, tri.triangle(2, 3, 4));
}
}

3.点击运行按钮及coverage launcher

， 运行结果如下：