软件测试技术 上机实验1

一、junit、hamcrest和eclemma的安装。

1.junit和hamcrest在新建了junitHw1工程后在build path里通过add external jars添加junit－4.12.jar和hamcrest－all－1.3.jar。

2.eclemma在eclipse下点击help－eclipse marketplace－find－eclemma安装。

二、编写Triangle以及TestTriangle1。

1.Triangle－判断三角形类型

    public static String whatIsTriangle(double a,double b, double c){
        
        if(a <= 0 || b <= 0 || c <= 0)            
            return "wrong";    
        
        if(a + b > c && a + c > b && b + c > a){        
    
            if(a == b && a ==c)            
                return "equilateral";        
            else if(a==b || a==c || b==c)            
                return "isosceles";        
            else            
                return "scalene";
        }
        else{
            return "wrong";
        }
    }

将方法写为静态方法，方便方法的调用。

2.TestTriangle1

package cn.tju.scs.lyz;

import static org.junit.Assert.*;
import java.util.Arrays;
import java.util.Collection;
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 TestTriangle1 {
    private double input1;
    private double input2;
    private double input3;
    private String expected;
    
    public TestTriangle1(double input1,double input2,double input3,String expected){
        this.input1 = input1;
        this.input2 = input2;
        this.input3 = input3;
        this.expected = expected;
    }
    
@Parameters
public static Collection<Object[]> getData(){
    return Arrays.asList(new Object[][]{
        {3,3,3,"equilateral"},
        {3,4,3,"isosceles"},
        {3,4,5,"scalene"},
        {0,0,0,"wrong"},
        {1,3,4,"wrong"}
    });
} 

@Test
public void test(){
    assertEquals(this.expected,Triangle.whatIsTriangle(input1,input2,input3));
}

}

三、测试结果 

五个测试用例均通过。

覆盖程度上图，TestTriangle1的覆盖率为100%。