Software Testing, Lab 1

1、Install Junit(4.12), Hamcrest(1.3) with Eclipse

2、Install Eclemma with Eclipse

3、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.

Triangle.java：

 package cn.st.lab1;

 public class Triangle {
     public static boolean isTriangle(int a, int b, int c) {
         if(a+b>c && a+c>b && b+c>a && Math.abs(a-b)<c &&
                 Math.abs(a-c)<b && Math.abs(b-c)<a && a>0 && b>0 && c>0) {
             return true;
         }
         else {
             return false;
         }
     }
     public static boolean isEquilateral(int a, int b, int c) {
         if(isTriangle(a,b,c)) {
             if(a == b && a == c) {
                 return true;
             }
         }
         return false;
     }
     public static boolean isIsosceles(int a, int b, int c) {
         if(isTriangle(a,b,c)) {
             if(a == b || a == c || b == c) {
                 return true;
             }
         }
         return false;
     }

     public static void Triangle (int a, int b, int c) {
         if(isTriangle(a,b,c)) {    //输出以下内容，则为三角形
             if(isEquilateral(a,b,c)) {
                 System.out.println("Equilateral");
             } //如果是等边，只输出等边，不输出等腰
             else if(isIsosceles(a,b,c)) {
                 System.out.println("Isosceles");
             }
             else {
                 System.out.println("Scalene");
             }
         }
         else {
             System.out.println("NotATriangle");
         }
     }
 

testTriangle.java：

 package cn.st.lab1;

 import static org.junit.Assert.*;

 import org.junit.*;

 public class testTriangle {

     Triangle t;
     @Before
     public void setUp(){
         t = new Triangle();
     }

     @Test
     public void testIsEquilateral() {
         assertEquals("testIsEquilateral", true, t.isEquilateral(6,6,6));
     }
     @Test
     public void testIsIsosceles() {
         assertEquals("testIsIsosceles", true, t.isIsosceles(5,6,6));
     }
     @Test
     public void testIsTriangle() {
         assertEquals("testIsTriangle", true, t.isTriangle(5,6,7));
     }
     @Test
     public void testTriangle() {
         t.Triangle(3, 4, 5);
         t.Triangle(3, 4, 4);
         t.Triangle(4, 4, 4);
         t.Triangle(1, 1, 5);
     }
 }

实验结果：

代码请见github:https://github.com/fogmisty/SoftwareTest