org.eclipse.tracecompass.pcap.core.tests/src/org/eclipse/tracecompass/pcap/core/tests/packet/BadPacketTest.java

   1 /*******************************************************************************
   2  * Copyright (c) 2014 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Vincent Perot - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.tracecompass.pcap.core.tests.packet;
  14
  15 import static org.junit.Assert.fail;
  16 import static org.junit.Assume.assumeTrue;
  17
  18 import java.io.IOException;
  19 import java.nio.ByteBuffer;
  20 import java.nio.ByteOrder;
  21
  22 import org.eclipse.tracecompass.internal.pcap.core.packet.BadPacketException;
  23 import org.eclipse.tracecompass.internal.pcap.core.protocol.ethernet2.EthernetIIPacket;
  24 import org.eclipse.tracecompass.internal.pcap.core.trace.BadPcapFileException;
  25 import org.eclipse.tracecompass.internal.pcap.core.trace.PcapFile;
  26 import org.eclipse.tracecompass.pcap.core.tests.shared.PcapTestTrace;
  27 import org.junit.Before;
  28 import org.junit.Test;
  29
  30 /**
  31  * JUnit Class that tests if BadPacketExceptions are thrown correctly.
  32  *
  33  * @author Vincent Perot
  34  */
  35 public class BadPacketTest {
  36
  37     private ByteBuffer fEthernetPacket;
  38
  39     /**
  40      * Initialize the packet.
  41      */
  42     @Before
  43     public void initialize() {
  44         fEthernetPacket = ByteBuffer.allocate(8);
  45         fEthernetPacket.order(ByteOrder.BIG_ENDIAN);
  46
  47         // This packet is erroneous. It contains 8 bytes while the minimum is 14
  48         // bytes for an Ethernet II packet.
  49
  50         // Destination MAC - 6 bytes
  51         fEthernetPacket.put((byte) 0x34);
  52         fEthernetPacket.put((byte) 0x67);
  53         fEthernetPacket.put((byte) 0x0C);
  54         fEthernetPacket.put((byte) 0xD2);
  55         fEthernetPacket.put((byte) 0x91);
  56         fEthernetPacket.put((byte) 0x51);
  57
  58         // Source MAC - 2 bytes
  59         fEthernetPacket.put((byte) 0x10);
  60         fEthernetPacket.put((byte) 0xF8);
  61
  62         fEthernetPacket.flip();
  63
  64     }
  65
  66     /**
  67      * Test that verify if a BadPacketException is correctly thrown (when a
  68      * packet is erroneous).
  69      *
  70      * @throws BadPcapFileException
  71      *             Thrown when the file is erroneous. Fails the test.
  72      * @throws IOException
  73      *             Thrown when an IO error occurs. Fails the test.
  74      * @throws BadPacketException
  75      *             Thrown when a packet is erroneous. Expected from the test.
  76      */
  77     @Test(expected = BadPacketException.class)
  78     public void PacketExceptionTest() throws BadPacketException, IOException, BadPcapFileException {
  79         PcapTestTrace trace = PcapTestTrace.MOSTLY_TCP;
  80         assumeTrue(trace.exists());
  81         try (PcapFile dummy = new PcapFile(trace.getPath())) {
  82             ByteBuffer packet = fEthernetPacket;
  83             if (packet != null) {
  84                 new EthernetIIPacket(dummy, null, packet);
  85             }
  86             fail("PacketExceptionTest has failed!");
  87         }
  88     }
  89 }