软件测试Lab 1 Junit and Eclemma

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

Description of triangle problem:Function triangle takes three integers a,b,c which are length of triangle sides; calculates whether the triangle is equilateral, isosceles, or scalene.

 1 package T_main;
 2 
 3 public class Tmain {
 4     private static int one, two, three = 1;
 5     
 6     public static void main(String[] args) {        
 7          check ( one , two , three );
 8     }
 9 
10     public static int check ( int a , int b , int c ){
11         int maxn = Math.max(Math.max(a,b), c);
12         int x[]={a,b,c};
13         int pow_sum = 0;
14         int min_sum = 0;
15         boolean flag = false;
16         for ( int i = 0 ; i < x.length ; i++ )
17         {
18             if( x[i] != maxn || flag ){
19                 pow_sum += Math.pow(x[i], 2);
20                 min_sum += x[i];
21             }
22             if( x[i] == maxn ) flag = true;
23         }
24         //两边之和小于第三边，非法三角形
25         if( min_sum <= maxn ) return -1;
26         //等边三角形，返回1
27         else if ( a == b && b == c  ) return 1;
28         //等腰三角形，返回2
29         else if( a== b || b == c || a == c ) return 2;
30         //直角三角形，返回3
31         else if( Math.pow(maxn, 2) == pow_sum ) return 3;
32         //普通三角形，返回0
33         return 0;
34     }
35 
36 }

 1 package T_main;
 2 
 3 import static org.junit.jupiter.api.Assertions.*;
 4 
 5 import org.junit.jupiter.api.Test;
 6 
 7 class Ttest {
 8 
 9      Tmain tmain = new Tmain();
10 
11         @Test
12         public void testCheck() {
13             int temp = tmain.check(2, 2, 5 );
14             assertEquals( -1 , temp );
15             temp = tmain.check(2, 2, 2);
16             assertEquals( 1 , temp );
17             temp = tmain.check(2, 2, 3 );
18             assertEquals( 2 , temp );
19             temp = tmain.check(3, 4, 5);
20             assertEquals ( 3 , temp );
21             temp = tmain.check(2, 3, 4);
22             assertEquals ( 0 , temp );
23         }
24 }