ZCW-MacroLabs-OOP-ScientificCalculator/CalculatorTest.java

import org.junit.Assert;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

/**
 * The test class CalculatorTest.
 *
 * @author  (your name)
 * @version (a version number or a date)
 */
public class CalculatorTest
{
   @Test
    public void additionTest(){
        //:Given
        Double expected = Double.valueOf(3);
        //:When
        Calculator c = new Calculator();
        Double actual = c.add(0,3);
        //:Then
        Assert.assertEquals(expected, actual);
    }
   @Test
    public void subtractionTest(){
        //:Given
        Double expected = Double.valueOf(2-1);
        //:When
        Calculator c = new Calculator();
        Double actual = c.subtract(2, 1);
        //Then
        Assert.assertEquals(expected, actual);
    }
   @Test
   public void mutliplicationTest(){
       //:Given
       Double expected = Double.valueOf(2*3);
       //:When
       Calculator c = new Calculator();
       Double actual = c.multiply(2, 3);
       //:Then
       Assert.assertEquals(expected, actual);
    }
   @Test
   public void divisionTest(){
       //:Given
       Double expected = Double.valueOf(4/3);
       //:When
       Calculator c = new Calculator();
       Double actual = c.divide(4,3);
       //:Then
       Assert.assertEquals(expected, actual);
    }
   @Test
   public void powTest(){
       //:Given
       Double expected = Double.valueOf(9);
       //:When
       Calculator c = new Calculator();
       Double actual = c.pow(3,2);
       //:Then
       Assert.assertEquals(expected, actual);
    }
   @Test
    public void squareTest(){
        //:Given
        Double expected = Double.valueOf(225);
        //:When
        Calculator c = new Calculator();
        Double actual = c.square(15);
        //:Then
        Assert.assertEquals(expected, actual);
    }
   @Test
   public void sqrtTest(){
       //:Given
       Double expected = Double.valueOf(Math.sqrt(4));
       //:When
       Calculator c = new Calculator();
       Double actual = c.squareRoot(4);
       //:Then
       Assert.assertEquals(expected, actual);
    }
}