IpPrefixTest.java
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/*
* Copyright 2014 Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onlab.packet;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.util.Arrays;
import org.junit.Test;
import org.onlab.packet.IpPrefix.Version;
import com.google.common.testing.EqualsTester;
public class IpPrefixTest {
private static final byte [] BYTES1 = new byte [] {0xa, 0x0, 0x0, 0xa};
private static final byte [] BYTES2 = new byte [] {0xa, 0x0, 0x0, 0xb};
private static final int INTVAL1 = 167772170;
private static final int INTVAL2 = 167772171;
private static final String STRVAL = "10.0.0.12/16";
private static final int MASK_LENGTH = 16;
@Test
public void testEquality() {
IpPrefix ip1 = IpPrefix.valueOf(BYTES1, IpPrefix.MAX_INET_MASK_LENGTH);
IpPrefix ip2 = IpPrefix.valueOf(INTVAL1, IpPrefix.MAX_INET_MASK_LENGTH);
IpPrefix ip3 = IpPrefix.valueOf(BYTES2, IpPrefix.MAX_INET_MASK_LENGTH);
IpPrefix ip4 = IpPrefix.valueOf(INTVAL2, IpPrefix.MAX_INET_MASK_LENGTH);
IpPrefix ip5 = IpPrefix.valueOf(STRVAL);
new EqualsTester().addEqualityGroup(ip1, ip2)
.addEqualityGroup(ip3, ip4)
.addEqualityGroup(ip5)
.testEquals();
// string conversions
IpPrefix ip6 = IpPrefix.valueOf(BYTES1, MASK_LENGTH);
IpPrefix ip7 = IpPrefix.valueOf("10.0.0.10/16");
IpPrefix ip8 = IpPrefix.valueOf(new byte [] {0xa, 0x0, 0x0, 0xc}, 16);
assertEquals("incorrect address conversion", ip6, ip7);
assertEquals("incorrect address conversion", ip5, ip8);
}
@Test
public void basics() {
IpPrefix ip1 = IpPrefix.valueOf(BYTES1, MASK_LENGTH);
final byte [] bytes = new byte [] {0xa, 0x0, 0x0, 0xa};
//check fields
assertEquals("incorrect IP Version", Version.INET, ip1.version());
assertEquals("incorrect netmask", 16, ip1.prefixLength());
assertTrue("faulty toOctets()", Arrays.equals(bytes, ip1.toOctets()));
assertEquals("faulty toInt()", INTVAL1, ip1.toInt());
assertEquals("faulty toString()", "10.0.0.10/16", ip1.toString());
}
@Test
public void netmasks() {
// masked
IpPrefix ip1 = IpPrefix.valueOf(BYTES1, MASK_LENGTH);
IpPrefix host = IpPrefix.valueOf("0.0.0.10/16");
IpPrefix network = IpPrefix.valueOf("10.0.0.0/16");
assertEquals("incorrect host address", host, ip1.host());
assertEquals("incorrect network address", network, ip1.network());
assertEquals("incorrect netmask", "255.255.0.0", ip1.netmask().toString());
}
@Test
public void testContainsIpPrefix() {
IpPrefix slash31 = IpPrefix.valueOf(BYTES1, 31);
IpPrefix slash32 = IpPrefix.valueOf(BYTES1, 32);
IpPrefix differentSlash32 = IpPrefix.valueOf(BYTES2, 32);
assertTrue(slash31.contains(differentSlash32));
assertFalse(differentSlash32.contains(slash31));
assertTrue(slash31.contains(slash32));
assertFalse(slash32.contains(differentSlash32));
assertFalse(differentSlash32.contains(slash32));
IpPrefix zero = IpPrefix.valueOf("0.0.0.0/0");
assertTrue(zero.contains(differentSlash32));
assertFalse(differentSlash32.contains(zero));
IpPrefix slash8 = IpPrefix.valueOf("10.0.0.0/8");
assertTrue(slash8.contains(slash31));
assertFalse(slash31.contains(slash8));
}
@Test
public void testContainsIpAddress() {
IpPrefix slash31 = IpPrefix.valueOf(BYTES1, 31);
IpAddress addr32 = IpAddress.valueOf(BYTES1);
assertTrue(slash31.contains(addr32));
IpPrefix intf = IpPrefix.valueOf("192.168.10.101/24");
IpAddress addr = IpAddress.valueOf("192.168.10.1");
assertTrue(intf.contains(addr));
IpPrefix intf1 = IpPrefix.valueOf("10.0.0.101/24");
IpAddress addr1 = IpAddress.valueOf("10.0.0.4");
assertTrue(intf1.contains(addr1));
}
}