software_testing_work3_question2

 package com.Phantom;

 import java.rmi.server.Operation;
 import java.util.Scanner;

 public class Work3_2 {

     /**
      * @param args
      */
     float x;
     float y;
     String step1;
     String step2;
     String step3;

     public void setX(float x) {
         this.x = x;
     }

     public void setY(float y) {
         this.y = y;
     }

     public Work3_2() {
     }

     public int operation(){
         step1="a";
         if(x<4||y>0){
             step2="b";
             if(y>1){
                 step3="c";
                 y=y+1;
             }
             else{
                 step3="d";
             }
         }
         else{
             step2="e";
             if(x>=5){
                 step3="f";
                 x=x-y;
             }
             else{
                 step3="g";
                 x=x+y;
             }
         }
         System.out.println("输出X >>>"+x);
         System.out.println("输出Y >>>"+y);
         System.out.println("路径:");
         System.out.println(step1+"——>"+step2+"——>"+step3);
         return 0;
     }

 }

测试类

 package com.Phantom;

 import static org.junit.Assert.*;

 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;

 public class Work3_2_teting {
     private Work3_2 w1;
     @Before
     public void setUp() throws Exception {
         w1=new Work3_2();
     }

     @After
     public void tearDown() throws Exception {
     }

     @Test
     public void test() {
         /*
          * a-e-g
          * */
         w1.setX(4);
         w1.setY(0);
         w1.operation();
         System.out.println("-----------------");
         /*
          * a-e-f
          * */
         w1.setX(5);
         w1.setY(0);
         w1.operation();
         System.out.println("-----------------");
         /*
          * a-b-d_(1)
          * */
         w1.setX(4);
         w1.setY((float) 0.1);
         w1.operation();
         System.out.println("-----------------");
         /*
          * a-b-d_(2)
          * */
         w1.setX(3);
         w1.setY(-1);
         w1.operation();
         System.out.println("-----------------");
         /*
          * a-b-c
          * */
         w1.setX(4);
         w1.setY(2);
         w1.operation();
         System.out.println("-----------------");

     }

 }

运行junit测试