package quiz;

import org.junit.Assert;
import org.junit.Test;

/**
 * Test case for the Byte class.
 *
 * @author Franck van Breugel
 */
public class ByteTest
{
    /**
     * Tests the constant MAX_VALUE.
     */
    @Test
    public void testMaxValue()
    {
        final int MAX_VALUE = 127;
        Assert.assertEquals(MAX_VALUE, Byte.MAX_VALUE);
    }

    /**
     * Tests the constant MIN_VALUE.
     */
    @Test
    public void testMinValue()
    {
        final int MIN_VALUE = -128;
        Assert.assertEquals(MIN_VALUE, Byte.MIN_VALUE);
    }

    /**
     * Tests the constructor.
     */
    @Test
    public void testConstructor()
    {
        for (int b = Byte.MIN_VALUE; b <= Byte.MAX_VALUE; b++)
        {
            Assert.assertNotNull(String.format("Failed for %d;", b), new Byte((byte) b));
        }
    }

    /**
     * Tests equals method.
     */
    @Test
    public void testEquals()
    {
        for (int b = Byte.MIN_VALUE; b <= Byte.MAX_VALUE; b++)
        {
            Byte object = new Byte((byte) b);
            Assert.assertTrue(String.format("Failed for %d;", b), object.equals(object));
            Assert.assertFalse(String.format("Failed for %d;", b), object.equals(null));
            Assert.assertFalse(String.format("Failed for %d;", b), object.equals(new Object()));
            for (int c = Byte.MIN_VALUE; c <= Byte.MAX_VALUE; c++)
            {
                Byte other = new Byte((byte) c);
                Assert.assertEquals(String.format("Failed for %d and %d;", b, c), b == c, object.equals(other));
            }
        }
    }

    /**
     * Tests hashCode method.
     */
    @Test
    public void testHashCode()
    {
        for (int b = Byte.MIN_VALUE; b <= Byte.MAX_VALUE; b++)
        {
            Byte object = new Byte((byte) b);
            Assert.assertEquals(String.format("Failed for %d;", b), b, object.hashCode());
        }
    }

    /**
     * Tests isEven method.
     */
    @Test
    public void testIsEven()
    {
        for (int b = Byte.MIN_VALUE; b <= Byte.MAX_VALUE; b++)
        {
            Byte object = new Byte((byte) b);
            Assert.assertEquals(String.format("Failed for %d;", b), b % 2 == 0, object.isEven());
        }
    }

    /**
     * Tests toString method.
     */
    @Test
    public void testToString()
    {
        for (int b = Byte.MIN_VALUE; b <= Byte.MAX_VALUE; b++)
        {
            Byte object = new Byte((byte) b);
            Assert.assertEquals(String.format("Failed for %d;", b), "" + b, object.toString());
        }
    }
}