IPv4AddressTest.java

package edu.harvard.iq.dataverse.authorization.groups.impl.ipaddress.ip;

import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Arrays;
import org.junit.Test;
import static org.junit.Assert.*;

/**
 *
 * @author michael
 */
public class IPv4AddressTest {
    
    
    /**
     * Test of valueOf method, of class IpAddress.
     */
    @Test
    public void testValueOf() {
        assertEquals( new IPv4Address(1,2,3,4), IPv4Address.valueOf("1.2.3.4") );
        assertEquals( new IPv4Address(127,0,0,1), IPv4Address.valueOf("127.0.0.1") );
    }
    
    @Test( expected=IllegalArgumentException.class )
    public void testValueOf_bad() {
        IPv4Address.valueOf("1.2.3");
    }
    
    @Test
    public void testLocalhostness() {
        assertTrue( IPv4Address.valueOf("127.0.0.1").isLocalhost() );
        assertFalse( IPv4Address.valueOf("67.3.44.11").isLocalhost() );
    }
    
    /**
     * Test of toString method, of class IpAddress.
     */
    @Test
    public void testToString() {
        assertEquals( "127.0.0.1", new IPv4Address( 127,0,0,1).toString() );
    }
    
    
    @Test
    public void testComparator() {
        IPv4Address[] expected = new IPv4Address[]{
                new IPv4Address(127, 20, 20, 40),
                new IPv4Address(127, 20, 30, 40),
                new IPv4Address(127, 20, 30, 41),
                new IPv4Address(128, 00, 00, 00)
        };
        
        IPv4Address[] scrambled = new IPv4Address[]{expected[3], expected[2],expected[0],expected[1]};
        Arrays.sort(scrambled);
        assertArrayEquals( expected, scrambled );
    }
    
    @Test
    public void testLongRoundtrip() {
        Arrays.asList(
                new IPv4Address(127,0,36,255),
                new IPv4Address(0,0,0,0),
                new IPv4Address(127,0,0,1),
                new IPv4Address(128,0,0,1),
                new IPv4Address(0,0,127,1),
                new IPv4Address(0,0,128,1),
                new IPv4Address(128,128,128,128),
                new IPv4Address(127,127,127,127),
                new IPv4Address(255,255,255,255),
                new IPv4Address(255,0,34,1)
        ).forEach( addr -> assertEquals( addr, new IPv4Address(addr.toLong())) );
    }
    
    @Test
    public void testBigIntegerRoundtrip() {
        Arrays.asList(
                new IPv4Address(0,0,0,0),
                new IPv4Address(0,0,0,1),
                new IPv4Address(0,0,1,0),
                new IPv4Address(0,1,0,0),
                new IPv4Address(1,0,0,0),
                new IPv4Address(1,1,1,1),
                new IPv4Address(0,0,127,1),
                new IPv4Address(127,0,36,255),
                new IPv4Address(127,0,0,1),
                new IPv4Address(128,0,0,1),
                new IPv4Address(0,0,128,1),
                new IPv4Address(128,128,128,128),
                new IPv4Address(127,127,127,127),
                new IPv4Address(255,255,255,255),
                new IPv4Address(255,0,34,1)
        ).forEach( addr -> assertEquals( addr, new IPv4Address(addr.toBigInteger())) );
    }
    
    @Test
    public void toBigInteger() {
        assertEquals( BigInteger.ZERO, new IPv4Address(0,0,0,0).toBigInteger() );
        assertEquals( BigInteger.ONE, new IPv4Address(0,0,0,1).toBigInteger() );
        assertEquals( BigInteger.ONE.shiftLeft(8),
                        new IPv4Address(0,0,1,0).toBigInteger() );
    }
}