Software Testing Techniques LAB 01: test Junit and Eclemma

1. Installing

 1. Install Junit and hamcrest

First, I download the Junit-4.12.jar and hamcrest-core-1.3.jar

Then. I add them into eclipse library

After installing,

   2. Installing eclemma

Installing with Eclipse Marketplace

2. Testing

1. Coding

Write a java program for the triangle problem, which can calculate whether the triangle is equilateral, isosceles or scalene.

package newTest;

public class Triangle {

	public int a;
	public int b;
	public int c;

	public Triangle(){

	}

	public Triangle(int a, int b, int c){
		this.a=a;
		this.b=b;
		this.c=c;
	}

	public String calculate(){

		if ( a + b <= c || b + c <= a || c + a <= b ){
			return "Not a triangle";
		}
		else if( a == b && a == c ){
			return "equilateral";
		}
		else if( a == b || a == c || b == c ){
			return "isosceles";
		}
		else{
			return "scalene";
		}
	}

}

2. Creating Junit test case

Then, finish the test case

package newTest;

import static org.junit.Assert.*;

import org.junit.Before;
import org.junit.Test;

public class TriangleTest {

	public Triangle tri;

	@Before
	public void setUp() throws Exception {
	}

	@Test
	public void testCalculate() {
		tri = new Triangle(1,1,1);
		assertEquals("equilateral",tri.calculate());
		tri = new Triangle(2,2,3);
		assertEquals("isosceles",tri.calculate());
		tri = new Triangle(2,2,1);
		assertEquals("isosceles",tri.calculate());
		tri = new Triangle(3,4,5);
		assertEquals("scalene",tri.calculate());
		tri = new Triangle(3,5,9);
		assertEquals("Not a triangle",tri.calculate());
	}

}

3. Testing and debug

Run the Junit test case, I found some Failures, then I correct them.

The last is Coverage Testing with Eclemma