LLDPTest.java
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/*
* Copyright 2015 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.junit.Before;
import org.junit.Test;
import java.nio.ByteBuffer;
import java.util.Arrays;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* Unit tests for the LLDP class.
*/
public class LLDPTest {
private Deserializer<LLDP> deserializer;
private byte[] chassisValue = new byte[] {0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7};
private byte[] portValue = new byte[] {0x1, 0x2, 0x3, 0x4, 0x5};
private byte[] ttlValue = new byte[] {0x0, 0x20};
private short optionalTlvSize = 6;
private byte[] optionalTlvValue = new byte[] {0x6, 0x5, 0x4, 0x3, 0x2, 0x1};
private byte[] bytes;
@Before
public void setUp() throws Exception {
deserializer = LLDP.deserializer();
// Each TLV is 2 bytes for the type+length, plus the size of the value
// There are 2 zero-bytes at the end
ByteBuffer bb = ByteBuffer.allocate(2 + LLDP.CHASSIS_TLV_SIZE +
2 + LLDP.PORT_TLV_SIZE +
2 + LLDP.TTL_TLV_SIZE +
2 + optionalTlvSize +
2);
// Chassis TLV
bb.putShort(getTypeLength(LLDP.CHASSIS_TLV_TYPE, LLDP.CHASSIS_TLV_SIZE));
bb.put(chassisValue);
// Port TLV
bb.putShort(getTypeLength(LLDP.PORT_TLV_TYPE, LLDP.PORT_TLV_SIZE));
bb.put(portValue);
// TTL TLV
bb.putShort(getTypeLength(LLDP.TTL_TLV_TYPE, LLDP.TTL_TLV_SIZE));
bb.put(ttlValue);
// Optional TLV
bb.putShort(getTypeLength(LLDPOrganizationalTLV.ORGANIZATIONAL_TLV_TYPE, optionalTlvSize));
bb.put(optionalTlvValue);
bb.putShort((short) 0);
bytes = bb.array();
}
private short getTypeLength(byte type, short length) {
return (short) ((0x7f & type) << 9 | 0x1ff & length);
}
@Test
public void testDeserializeBadInput() throws Exception {
PacketTestUtils.testDeserializeBadInput(deserializer);
}
@Test
public void testDeserializeTruncated() throws Exception {
PacketTestUtils.testDeserializeTruncated(deserializer, bytes);
}
@Test
public void testDeserialize() throws Exception {
LLDP lldp = deserializer.deserialize(bytes, 0, bytes.length);
assertEquals(LLDP.CHASSIS_TLV_TYPE, lldp.getChassisId().getType());
assertEquals(LLDP.CHASSIS_TLV_SIZE, lldp.getChassisId().getLength());
assertTrue(Arrays.equals(chassisValue, lldp.getChassisId().getValue()));
assertEquals(LLDP.PORT_TLV_TYPE, lldp.getPortId().getType());
assertEquals(LLDP.PORT_TLV_SIZE, lldp.getPortId().getLength());
assertTrue(Arrays.equals(portValue, lldp.getPortId().getValue()));
assertEquals(LLDP.TTL_TLV_TYPE, lldp.getTtl().getType());
assertEquals(LLDP.TTL_TLV_SIZE, lldp.getTtl().getLength());
assertTrue(Arrays.equals(ttlValue, lldp.getTtl().getValue()));
assertEquals(1, lldp.getOptionalTLVList().size());
LLDPTLV optionalTlv = lldp.getOptionalTLVList().get(0);
assertEquals(LLDPOrganizationalTLV.ORGANIZATIONAL_TLV_TYPE, optionalTlv.getType());
assertEquals(optionalTlvSize, optionalTlv.getLength());
assertTrue(Arrays.equals(optionalTlvValue, optionalTlv.getValue()));
}
}