一、junit和hamcrest安装及引入
1.输入网址http://junit.org/junit4/下载junit及hamcrest
2.打开Eclipse新建一个project
3.右键点击build path 引进junit
二、eclemma安装
点击help-->Eclipse Marketplace-->在find中输入eclemma-->install-->重启Eclipse
三、三角形问题及junit、hamcrest、eclemma的使用
1、编写三角形判断程序
public class triangle_problem { String triangle_juidje(double a,double b, double c){ if(a == b && a == c){ String str = new String(); str = "the trangle is equilateral"; return str; } if((a+b)>c &&(a+c)>b &&(b+c)>a){ if((a == b && a != c)|| (a==c && a != b) || (b == c && b != a)){ String str = new String(); str = "the trangle is isosceles"; return str; } if(a!=b && b!=c){ String str = new String(); str = "the trangle is scalene"; return str; } } else{ String str = new String(); str = "the three edges can't make up a trangle!"; return str; } return null; } } |
2、junit类生成
选中类-->new-->jUnit Test Case
3、编辑junit内容
import static org.junit.Assert.*; import org.junit.Test; public class triangle_problemTest { private triangle_problem tri; @Test public void testequilateral() { tri = new triangle_problem(); assertEquals("the trangle is equilateral",tri.triangle_juidje(3,3,3)); } @Test public void testisosceles() { tri = new triangle_problem(); assertEquals("the trangle is isosceles",tri.triangle_juidje(2,3,2)); } @Test public void testscalene() { tri = new triangle_problem(); assertEquals("the trangle is scalene",tri.triangle_juidje(2,3,4)); } @Test public void testnottrangle() { tri = new triangle_problem(); assertEquals("the three edges can't make up a trangle!",tri.triangle_juidje(2,3,5)); } } |
4、运行junit文件
5、运行eclemma
