org.spearce.jgit.test/tst/org/spearce/jgit/transport/PacketLineOutTest.java

   1 /*
   2  * Copyright (C) 2009, Google Inc.
   3  *
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or
   7  * without modification, are permitted provided that the following
   8  * conditions are met:
   9  *
  10  * - Redistributions of source code must retain the above copyright
  11  *   notice, this list of conditions and the following disclaimer.
  12  *
  13  * - Redistributions in binary form must reproduce the above
  14  *   copyright notice, this list of conditions and the following
  15  *   disclaimer in the documentation and/or other materials provided
  16  *   with the distribution.
  17  *
  18  * - Neither the name of the Git Development Community nor the
  19  *   names of its contributors may be used to endorse or promote
  20  *   products derived from this software without specific prior
  21  *   written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  24  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  25  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  26  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  28  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  30  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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  37
  38 package org.spearce.jgit.transport;
  39
  40 import java.io.ByteArrayOutputStream;
  41 import java.io.IOException;
  42 import java.io.OutputStream;
  43
  44 import junit.framework.TestCase;
  45
  46 import org.spearce.jgit.lib.Constants;
  47
  48 // Note, test vectors created with:
  49 //
  50 // perl -e 'printf "%4.4x%s\n", 4+length($ARGV[0]),$ARGV[0]'
  51
  52 public class PacketLineOutTest extends TestCase {
  53         private ByteArrayOutputStream rawOut;
  54
  55         private PacketLineOut out;
  56
  57         protected void setUp() throws Exception {
  58                 super.setUp();
  59                 rawOut = new ByteArrayOutputStream();
  60                 out = new PacketLineOut(rawOut);
  61         }
  62
  63         // writeString
  64
  65         public void testWriteString1() throws IOException {
  66                 out.writeString("a");
  67                 out.writeString("bc");
  68                 assertBuffer("0005a0006bc");
  69         }
  70
  71         public void testWriteString2() throws IOException {
  72                 out.writeString("a\n");
  73                 out.writeString("bc\n");
  74                 assertBuffer("0006a\n0007bc\n");
  75         }
  76
  77         public void testWriteString3() throws IOException {
  78                 out.writeString("");
  79                 assertBuffer("0004");
  80         }
  81
  82         // end
  83
  84         public void testWriteEnd() throws IOException {
  85                 final int[] flushCnt = new int[1];
  86                 final OutputStream mockout = new OutputStream() {
  87                         @Override
  88                         public void write(int arg0) throws IOException {
  89                                 rawOut.write(arg0);
  90                         }
  91
  92                         @Override
  93                         public void flush() throws IOException {
  94                                 flushCnt[0]++;
  95                         }
  96                 };
  97
  98                 new PacketLineOut(mockout).end();
  99                 assertBuffer("0000");
 100                 assertEquals(1, flushCnt[0]);
 101         }
 102
 103         // writePacket
 104
 105         public void testWritePacket1() throws IOException {
 106                 out.writePacket(new byte[] { 'a' });
 107                 assertBuffer("0005a");
 108         }
 109
 110         public void testWritePacket2() throws IOException {
 111                 out.writePacket(new byte[] { 'a', 'b', 'c', 'd' });
 112                 assertBuffer("0008abcd");
 113         }
 114
 115         public void testWritePacket3() throws IOException {
 116                 final int buflen = SideBandOutputStream.MAX_BUF
 117                                 - SideBandOutputStream.HDR_SIZE;
 118                 final byte[] buf = new byte[buflen];
 119                 for (int i = 0; i < buf.length; i++) {
 120                         buf[i] = (byte) i;
 121                 }
 122                 out.writePacket(buf);
 123                 out.flush();
 124
 125                 final byte[] act = rawOut.toByteArray();
 126                 final String explen = Integer.toString(buf.length + 4, 16);
 127                 assertEquals(4 + buf.length, act.length);
 128                 assertEquals(new String(act, 0, 4, "UTF-8"), explen);
 129                 for (int i = 0, j = 4; i < buf.length; i++, j++) {
 130                         assertEquals(buf[i], act[j]);
 131                 }
 132         }
 133
 134         // writeChannelPacket
 135
 136         public void testWriteChannelPacket1() throws IOException {
 137                 out.writeChannelPacket(1, new byte[] { 'a' }, 0, 1);
 138                 assertBuffer("0006\001a");
 139         }
 140
 141         public void testWriteChannelPacket2() throws IOException {
 142                 out.writeChannelPacket(2, new byte[] { 'b' }, 0, 1);
 143                 assertBuffer("0006\002b");
 144         }
 145
 146         public void testWriteChannelPacket3() throws IOException {
 147                 out.writeChannelPacket(3, new byte[] { 'c' }, 0, 1);
 148                 assertBuffer("0006\003c");
 149         }
 150
 151         // flush
 152
 153         public void testFlush() throws IOException {
 154                 final int[] flushCnt = new int[1];
 155                 final OutputStream mockout = new OutputStream() {
 156                         @Override
 157                         public void write(int arg0) throws IOException {
 158                                 fail("should not write");
 159                         }
 160
 161                         @Override
 162                         public void flush() throws IOException {
 163                                 flushCnt[0]++;
 164                         }
 165                 };
 166
 167                 new PacketLineOut(mockout).flush();
 168                 assertEquals(1, flushCnt[0]);
 169         }
 170
 171         private void assertBuffer(final String exp) throws IOException {
 172                 assertEquals(exp, new String(rawOut.toByteArray(),
 173                                 Constants.CHARACTER_ENCODING));
 174         }
 175 }