org.eclipse.tracecompass.pcap.core.tests/src/org/eclipse/tracecompass/pcap/core/tests/file/PcapFileEndiannessTest.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.file;
  14
  15 import static org.junit.Assert.assertEquals;
  16 import static org.junit.Assume.assumeTrue;
  17
  18 import java.io.IOException;
  19 import java.nio.ByteOrder;
  20 import java.nio.file.Path;
  21
  22 import org.eclipse.tracecompass.internal.pcap.core.packet.BadPacketException;
  23 import org.eclipse.tracecompass.internal.pcap.core.trace.BadPcapFileException;
  24 import org.eclipse.tracecompass.internal.pcap.core.trace.PcapFile;
  25 import org.eclipse.tracecompass.pcap.core.tests.shared.PcapTestTrace;
  26 import org.junit.Test;
  27
  28 /**
  29  * JUnit Class that tests whether the Pcap parser can read both big endian and
  30  * little endian files.
  31  *
  32  * @author Vincent Perot
  33  */
  34 public class PcapFileEndiannessTest {
  35
  36     /**
  37      * Test that verify that two files with different endianness contain the
  38      * same packets.
  39      *
  40      * @throws BadPcapFileException
  41      *             Thrown when the file is erroneous. Fails the test.
  42      * @throws IOException
  43      *             Thrown when an IO error occurs. Fails the test.
  44      * @throws BadPacketException
  45      *             Thrown when a packet is erroneous. Fails the test.
  46      */
  47     @Test
  48     public void EndiannessTest() throws IOException, BadPcapFileException, BadPacketException {
  49         PcapTestTrace trace = PcapTestTrace.SHORT_LITTLE_ENDIAN;
  50         assumeTrue(trace.exists());
  51         Path path1 = trace.getPath();
  52
  53         trace = PcapTestTrace.SHORT_LITTLE_ENDIAN;
  54         assumeTrue(trace.exists());
  55         Path path2 = PcapTestTrace.SHORT_BIG_ENDIAN.getPath();
  56
  57         try (PcapFile littleEndian = new PcapFile(path1);
  58                 PcapFile bigEndian = new PcapFile(path2);) {
  59             assertEquals(ByteOrder.BIG_ENDIAN, bigEndian.getByteOrder());
  60             assertEquals(ByteOrder.LITTLE_ENDIAN, littleEndian.getByteOrder());
  61             while (littleEndian.hasNextPacket() && bigEndian.hasNextPacket()) {
  62                 assertEquals(littleEndian.parseNextPacket(), bigEndian.parseNextPacket());
  63             }
  64         }
  65     }
  66 }