1     public int triangleJudgement(int a,int b, int c){
 2         //-1 rep not a triangle
 3 //        if(a <= 0 || b <= 0 || c <= 0)
 4 //        {
 5 //            return -1;
 6 //        }
 7
 8         if(a + b > c && b + c > a && a + c > b)
 9         {
10             //2 rep equilateral, 1 rep isosceles, 0 rep scalene
11             if(a == b && b == c){
12                 return 2;
13             }
14             else if(a == b || b == c || a == c){
15                 return 1;
16             }
17             else
18             {
19                 return 0;
20             }
21         }
22         else
23             return -1;
24     }

1 public class Test1 {
2
3     @Test
4     public void test1(){
5       App app = new App();
6         assertEquals(-1,app.triangleJudgement(1,2,3));
7     }
8 }

 1 @RunWith(Parameterized.class)
 2 public class Test2 {
 3     private int input1 = 0;
 4     private int input2 = 0;
 5     private int input3 = 0;
 6     private int expected = 0;
 7     private App AppTest = null;
 8
 9     public Test2(int input1,int input2, int input3, int expected){
10         this.input1 = input1;
11         this.input2 = input2;
12         this.input3 = input3;
13         this.expected = expected;
14     }
15
16     @Before
17     public void setUp(){
18         AppTest = new App();
19     }
20
21     @Parameterized.Parameters
22     public static Collection<Object[]> getData(){
23         return Arrays.asList(new Object[][]{
24                 {3,1,2,-1},
25                 {3,3,3,2},
26                 {1,4,4,1},
27                 {5,3,4,0},
28                 {4,3,3,0},
29                 {2,2,2,1}
30
31         });
32     }
33
34     @Test
35     public void testApp(){
36         assertEquals(this.expected,AppTest.triangleJudgement(input1,input2,input3));
37     }
38 }