3014218152 林默涵 第一次上机实验报告

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.

　　　　a)      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. 

　　the code:

package exp1;

public class Triangle {
    public static String Triangle (int a, int b, int c){
         if(a+b > c && a+c > b && b+c > a){
                if (a == b && b == c)
                    return "equilateral triangle";
                else if (a == b || b == c || c == a)
                    return "isosceles triangle";
                else
                    return "scalene triangle";   
          }
          else
                return "not a triganle";
    }
}

　　the test code:

package tester;

import static org.junit.Assert.*;

import org.junit.Test;

import exp1.Triangle;

public class TestTriangle {
    @Test
    public void testTriangle() {
        assertEquals("not a triganle",new Triangle().Triangle(1,2,3));
        assertEquals("equilateral triangle",new Triangle().Triangle(3,3,3));
        assertEquals("isosceles triangle",new Triangle().Triangle(4,4,5));
        assertEquals("scalene triangle",new Triangle().Triangle(2,3,4));
    }
}

　　result:

 

The main problem: I added yhe source of junit and hamcrest in the property in of the project, but it still didn't pass. So I used the junit in the Eclipse.