软件测试 第一次实验

Tasks:

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

2.     Install Eclemmawith Eclipse

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

a)       Description oftriangle problem:

Functiontriangle takes three integers a,b,cwhich are length of triangle sides; calculates whether the triangle isequilateral, isosceles, or scalene.

Requirements for theexperiment:

1.     Finish the tasksabove individually.

2.     Check in yourjava code and junit test program to github and send the URL to tjuscsst@qq.com

3.     Post yourexperiment report to your blog and send the URL to tjuscsst@qq.com , the following information should beincluded in your report:

a)       The brief descriptionthat you install junit, hamcrest and eclemma.

b)      The test resultand coverage report (print screen) of your tests on triangle problem. 

一、使用eclips，配置Junit4.12，hamcrest-all-1.3

下载这两个jar包，在src文件目录下新建文件夹lib，将两个jar包复制进去。打开eclips项目，右键分别点击两个jar包，选择build path.

二、安装Eclemmawith插件

下载Eclemmawith-2.3.3，在eclipse中Help-中选择install new software，选择压缩包即可安装成功，重新启动eclipse，会出现最左面的图标

三、编写Triangle()函数

package lab1.tr;

public class Triangle {
	public String triangle(int a,int b,int c)
	{
		if(a==b && b==c)
			return "Equilateral triangle";
		else if(a==b || b==c || a==c)
			return "Isosceles triangle";
		else if(a+b<c || a+c<b || b+c<a)
			return "Not triangle";
		return "Scalene triangle";
	}
}

四、新建测试类TestTriangle.java，编写Junit代码

先逐一测试了各个输出。

最后使用了Parameter的参数化测试，将所有测试用例放到了一起。

package lab1.tr;

import static org.junit.Assert.*;

import java.util.Collection;
import java.util.Arrays;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

@RunWith(Parameterized.class)
public class TestTriangle {
	private Triangle tri;
	
	private int a,b,c;
	private String s;
	
	public TestTriangle(int a,int b,int c,String s){
		this.a=a;
		this.b=b;
		this.c=c;
		this.s=s;
	}
	
	
	@Before
	public void setup(){
		tri=new Triangle();
	}
	
	@Test
	public void testEquilateral(){
		assertEquals("Equilateral triangle",tri.triangle(3,3,3));
	}
	@Test
	public void testIsosceles(){
		assertEquals("Isosceles triangle",tri.triangle(3,3,4));
	}
	@Test
	public void testScalene(){
		assertEquals("Scalene triangle",tri.triangle(3,4,5));
	}
	@Test
	public void testNotTriangle(){
		assertEquals("Not triangle",tri.triangle(3, 4, 8));
	}
	
	//参数化测试
	@Parameters
	public static Collection<Object[]> getResult(){
		return Arrays.asList(new Object[][]{
			{3,3,3,"Equilateral triangle"},
			{3,3,4,"Isosceles triangle"},
			{3,4,5,"Scalene triangle"},
			{3,4,8,"Not triangle"}
		});
	}
	
	@Test
	public void testTriangle(){
		assertEquals(this.s,tri.triangle(a, b, c));
	}


}

五、覆盖结果