CalculatorTest.java

package com.pack.one;

import static org.junit.Assert.assertEquals;

import org.junit.Test;

/**
 * Junit cases for the {@link Calculator} web service
 *
 * @author saifasif
 */
public class CalculatorTest {

    @Test
    public void testMul() {
        Calculator calculator = new Calculator();
        assertEquals(0.0F, (float) calculator.mul(1, 0), -1);
    }

    @Test
    public void testSum() {
        Calculator calculator = new Calculator();
        assertEquals(10, calculator.sum(5, 5), -1);

    }

    @Test(expected = java.lang.ArithmeticException.class)
    public void testDiv() {
        Calculator calculator = new Calculator();
        assertEquals(10, calculator.div(1, 0), -1);
    }

    @Test
    public void testSub() {
        Calculator calculator = new Calculator();
        assertEquals(10, calculator.sub(15, 5), -1);

    }


}