2020-03-04-My footstep today goals

 

Do unit test with Junit in intellij

 

package Service;

 

//Main

public class JunitFun {

int add(int i, int j) {

return i + j;

}

int subtract(int i, int j) {

return i - j;

}

}

 

package Service;

 

import org.junit.Test;

 

import static org.junit.Assert.*;

 

public class JunitFunTest {

JunitFun cal = new JunitFun();

 

@Test

public void add() {

int result =cal.add(1 ,3 );

assertEquals(4, result);

}

}

 

//Test

package Service;

import org.junit.After;

import org.junit.Before;

import org.junit.Test;

import static org.junit.Assert.*;

 

public class JunitFunTest {

JunitFun cal;

 

@Before

public void setup(){

cal = new JunitFun();

System.out.println("setup!");

 

}

 

@Test

public void divide() {

assertEquals(3, cal.divide(3,1));

System.out.println("divide!");

 

}

@Test

public void trueFalse() {

assertTrue(true);

System.out.println("boolean!");

 

}

@After

public void teardown() {

System.out.println("teardown!");

}

}

So the instance is form the main class. it's just basic calculation.

 

I used assert library of java. And some say assertj is better than java. So nexttime I would try.