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