package ru.job4j;

import org.junit.Test;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;

/**
*Test
*
*@author Alexander Erokhov (qsok3d@gmail.com)
*@version $Id$
*@snipe 0.1
*/

public class CalculateTest{
/**
*Test add.
*/

@Test
public void whenAddOneToOneThenTwo(){
	ByteArrayOutputStream out = new ByteArrayOutputStream();
	System.setOut(new PrintStream(out));
	Calculate.main(null);
	assertThat(out.toString(), is("Hello World\r\n"));
}
}

package ru.job4j;

import org.junit.Test;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;

/**
*Test.
*
*@author Alexander Erokhov (qsok3d@gmail.com)
*@version $Id$
*@since 0.1
*/

public class CalculateTest {
/**
*Test add.
*/

@Test
public void whenAddOneToOneThenTwo() {
	ByteArrayOutputStream out = new ByteArrayOutputStream();
	System.setOut(new PrintStream(out));
	Calculate.main(null);
	assertThat(out.toString(), is("Hello World\r\n"));
}
}

add new Test