org.spearce.jgit.test/tst/org/spearce/jgit/transport/SideBandOutputStreamTest.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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  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 SideBandOutputStreamTest extends TestCase {
  53         private ByteArrayOutputStream rawOut;
  54
  55         private PacketLineOut pckOut;
  56
  57         protected void setUp() throws Exception {
  58                 super.setUp();
  59                 rawOut = new ByteArrayOutputStream();
  60                 pckOut = new PacketLineOut(rawOut);
  61         }
  62
  63         public void testWrite_CH_DATA() throws IOException {
  64                 final SideBandOutputStream out;
  65                 out = new SideBandOutputStream(SideBandOutputStream.CH_DATA, pckOut);
  66                 out.write(new byte[] { 'a', 'b', 'c' });
  67                 assertBuffer("0008\001abc");
  68         }
  69
  70         public void testWrite_CH_PROGRESS() throws IOException {
  71                 final SideBandOutputStream out;
  72                 out = new SideBandOutputStream(SideBandOutputStream.CH_PROGRESS, pckOut);
  73                 out.write(new byte[] { 'a', 'b', 'c' });
  74                 assertBuffer("0008\002abc");
  75         }
  76
  77         public void testWrite_CH_ERROR() throws IOException {
  78                 final SideBandOutputStream out;
  79                 out = new SideBandOutputStream(SideBandOutputStream.CH_ERROR, pckOut);
  80                 out.write(new byte[] { 'a', 'b', 'c' });
  81                 assertBuffer("0008\003abc");
  82         }
  83
  84         public void testWrite_Small() throws IOException {
  85                 final SideBandOutputStream out;
  86                 out = new SideBandOutputStream(SideBandOutputStream.CH_DATA, pckOut);
  87                 out.write('a');
  88                 out.write('b');
  89                 out.write('c');
  90                 assertBuffer("0006\001a0006\001b0006\001c");
  91         }
  92
  93         public void testWrite_Large() throws IOException {
  94                 final int buflen = SideBandOutputStream.MAX_BUF
  95                                 - SideBandOutputStream.HDR_SIZE;
  96                 final byte[] buf = new byte[buflen];
  97                 for (int i = 0; i < buf.length; i++) {
  98                         buf[i] = (byte) i;
  99                 }
 100
 101                 final SideBandOutputStream out;
 102                 out = new SideBandOutputStream(SideBandOutputStream.CH_DATA, pckOut);
 103                 out.write(buf);
 104
 105                 final byte[] act = rawOut.toByteArray();
 106                 final String explen = Integer.toString(buf.length + 5, 16);
 107                 assertEquals(5 + buf.length, act.length);
 108                 assertEquals(new String(act, 0, 4, "UTF-8"), explen);
 109                 assertEquals(1, act[4]);
 110                 for (int i = 0, j = 5; i < buf.length; i++, j++) {
 111                         assertEquals(buf[i], act[j]);
 112                 }
 113         }
 114
 115         public void testFlush() throws IOException {
 116                 final int[] flushCnt = new int[1];
 117                 final OutputStream mockout = new OutputStream() {
 118                         @Override
 119                         public void write(int arg0) throws IOException {
 120                                 fail("should not write");
 121                         }
 122
 123                         @Override
 124                         public void flush() throws IOException {
 125                                 flushCnt[0]++;
 126                         }
 127                 };
 128
 129                 new SideBandOutputStream(SideBandOutputStream.CH_DATA,
 130                                 new PacketLineOut(mockout)).flush();
 131                 assertEquals(0, flushCnt[0]);
 132
 133                 new SideBandOutputStream(SideBandOutputStream.CH_ERROR,
 134                                 new PacketLineOut(mockout)).flush();
 135                 assertEquals(1, flushCnt[0]);
 136
 137                 new SideBandOutputStream(SideBandOutputStream.CH_PROGRESS,
 138                                 new PacketLineOut(mockout)).flush();
 139                 assertEquals(2, flushCnt[0]);
 140         }
 141
 142         private void assertBuffer(final String exp) throws IOException {
 143                 assertEquals(exp, new String(rawOut.toByteArray(),
 144                                 Constants.CHARACTER_ENCODING));
 145         }
 146 }