| /* |
| * Copyright 2015-present 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 org.apache.commons.lang3.StringUtils; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.nio.ByteBuffer; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * Unit tests for IPv4 class. |
| */ |
| public class IPv4Test { |
| |
| private Deserializer<IPv4> deserializer; |
| |
| private byte version = 4; |
| private byte headerLength = 6; |
| private byte diffServ = 2; |
| private short totalLength = 20; |
| private short identification = 1; |
| private byte flags = 1; |
| private short fragmentOffset = 1; |
| private byte ttl = 60; |
| private byte protocol = 4; |
| private short checksum = 4; |
| private int sourceAddress = 1; |
| private int destinationAddress = 2; |
| private byte[] options = new byte[] {0x1, 0x2, 0x3, 0x4}; |
| |
| private byte[] headerBytes; |
| |
| @Before |
| public void setUp() throws Exception { |
| deserializer = IPv4.deserializer(); |
| |
| ByteBuffer bb = ByteBuffer.allocate(headerLength * 4); |
| |
| bb.put((byte) ((version & 0xf) << 4 | headerLength & 0xf)); |
| bb.put(diffServ); |
| bb.putShort(totalLength); |
| bb.putShort(identification); |
| bb.putShort((short) ((flags & 0x7) << 13 | fragmentOffset & 0x1fff)); |
| bb.put(ttl); |
| bb.put(protocol); |
| bb.putShort(checksum); |
| bb.putInt(sourceAddress); |
| bb.putInt(destinationAddress); |
| bb.put(options); |
| |
| headerBytes = bb.array(); |
| } |
| |
| @Test |
| public void testDeserializeBadInput() throws Exception { |
| PacketTestUtils.testDeserializeBadInput(deserializer); |
| } |
| |
| @Test |
| public void testDeserializeTruncated() throws Exception { |
| PacketTestUtils.testDeserializeTruncated(deserializer, headerBytes); |
| } |
| |
| /** |
| * Tests deserialize and getters. |
| */ |
| @Test |
| public void testDeserialize() throws Exception { |
| IPv4 ipv4 = deserializer.deserialize(headerBytes, 0, headerBytes.length); |
| |
| assertEquals(version, ipv4.getVersion()); |
| assertEquals(headerLength, ipv4.getHeaderLength()); |
| assertEquals(diffServ, ipv4.getDiffServ()); |
| assertEquals(totalLength, ipv4.getTotalLength()); |
| assertEquals(identification, ipv4.getIdentification()); |
| assertEquals(flags, ipv4.getFlags()); |
| assertEquals(fragmentOffset, ipv4.getFragmentOffset()); |
| assertEquals(ttl, ipv4.getTtl()); |
| assertEquals(protocol, ipv4.getProtocol()); |
| assertEquals(checksum, ipv4.getChecksum()); |
| assertEquals(sourceAddress, ipv4.getSourceAddress()); |
| assertEquals(destinationAddress, ipv4.getDestinationAddress()); |
| assertTrue(ipv4.isTruncated()); |
| } |
| |
| /** |
| * Tests toString. |
| */ |
| @Test |
| public void testToStringIPv4() throws Exception { |
| IPv4 ipv4 = deserializer.deserialize(headerBytes, 0, headerBytes.length); |
| String str = ipv4.toString(); |
| |
| assertTrue(StringUtils.contains(str, "version=" + version)); |
| assertTrue(StringUtils.contains(str, "headerLength=" + headerLength)); |
| assertTrue(StringUtils.contains(str, "diffServ=" + diffServ)); |
| assertTrue(StringUtils.contains(str, "totalLength=" + totalLength)); |
| assertTrue(StringUtils.contains(str, "identification=" + identification)); |
| assertTrue(StringUtils.contains(str, "flags=" + flags)); |
| assertTrue(StringUtils.contains(str, "fragmentOffset=" + fragmentOffset)); |
| assertTrue(StringUtils.contains(str, "ttl=" + ttl)); |
| assertTrue(StringUtils.contains(str, "protocol=" + protocol)); |
| assertTrue(StringUtils.contains(str, "checksum=" + checksum)); |
| assertTrue(StringUtils.contains(str, "sourceAddress=" + sourceAddress)); |
| assertTrue(StringUtils.contains(str, "destinationAddress=" + destinationAddress)); |
| } |
| } |