一、实验主要内容:
1、
2、EclEmma安装
见: http://www.cnblogs.com/1995hxt/p/5291465.html
二、对与 Junit 安装,使用 maven管理项目,方便jar包的版本管理,冲突管理等等。
三、实验demo
1、方法主类:
package cn.edu.tju.scs; /** * Hello world! * */ public class Lab1 { /** * 判断是否为三角形, * 若是,是否是等腰或者等边 * @param a * @param b * @param c * @return -1 :不是; 0:普通三角形;1 等腰三角形;2:等边三角形 */ public static int judgeTri(int a,int b,int c){ System.out.println("参数: " + a + " " + b + " " + c); int result = -1; if(a <=0 || b <= 0 || c<= 0){ System.out.println("return -1 --------------: 不是三角形"); return result; } if(a + b > c && a + c > b && b + c > a){ result = 0; if(a == b && a == c){ System.out.println("return 2 --------------: 等边三角形"); result = 2; }else if(a ==b || a == c || b== c){ System.out.println("return 1 --------------: 等腰三角形"); result = 1; }else { System.out.println("return 0 --------------: 普通三角形"); } }else{ System.out.println("return -1 --------------: 不是三角形"); } return result; } }
2、测试类:
package cn.edu.tju.scs; import org.junit.After; import org.junit.Before; import org.junit.Test; import org.junit.runner.RunWith; import org.junit.runners.Parameterized; import java.util.Arrays; import java.util.Collection; import static junit.framework.Assert.assertEquals; /** * Unit test for simple App. */ @RunWith(Parameterized.class) public class Lab1Test { int expected = 0; int input1 = 0; int input2 = 0; int input3 = 0; /** * 判断是否为三角形, * 若是,是否是等腰或者等边 * @return -1 :不是; 0:普通三角形;1 等腰三角形;2:等边三角形 */ @Parameterized.Parameters public static Collection<Object[]> t(){ return Arrays.asList(new Object[][]{ {-1,0,0,0}, {-1,1,3,4}, {1,3,3,2}, {2,3,3,3}, {0,4,5,3}, {-1,3,0,-4}, {0,5,7,3}, {1,3,5,5} }); } public Lab1Test(int expected,int input1,int input2,int input3){ this.expected = expected; this.input1 = input1; this.input2 = input2; this.input3 = input3; } @Before public void before(){ System.out.println("测试开始 - - - - - - - - - - - - - - - - - - - - - - - "); } @Test public void testJudgeTri(){ assertEquals(expected,Lab1.judgeTri(input1,input2,input3)); } @After public void afeter(){ System.out.println("测试结束 - - - - - - - - - - - - - - - - - - - - - - - "); } }
3、测试结果: