Mercurial > hg > Members > kono > jpf-core

annotate src/tests/gov/nasa/jpf/util/CommitOutputStreamTest.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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12 * Unless required by applicable law or agreed to in writing, software
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18 package gov.nasa.jpf.util;
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19
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20 import gov.nasa.jpf.util.test.TestJPF;
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21 import java.io.IOException;
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22 import java.io.OutputStream;
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23 import java.io.PipedInputStream;
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24 import java.io.PipedOutputStream;
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25 import java.security.SecureRandom;
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26
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27 import org.junit.After;
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28 import org.junit.Before;
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29 import org.junit.Test;
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30
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31 public class CommitOutputStreamTest extends TestJPF {
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32
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33 private static final SecureRandom s_random = new SecureRandom();
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34
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35 private PipedInputStream m_result;
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36 private CommitOutputStream m_fixture;
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37
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38 @Before
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39 public void before() throws IOException {
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40 PipedOutputStream pipeOut;
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41
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42 pipeOut = new PipedOutputStream();
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43 m_fixture = new CommitOutputStream(pipeOut);
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44 m_result = new PipedInputStream(pipeOut, 8 * 1024);
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45 }
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46
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47 @After
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48 public void after() throws IOException {
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49 m_fixture.flush();
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50 assertEquals(0, m_result.available());
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51 }
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52
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53 @Test(expected = NullPointerException.class)
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54 public void constructorNullArg() {
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55 new CommitOutputStream(null);
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56 }
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57
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58 @Test
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59 public void flush() throws IOException {
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60 CountedOutputStream counted;
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61 CommitOutputStream fixture;
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62
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63 counted = new CountedOutputStream();
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64 fixture = new CommitOutputStream(counted);
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65
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66 fixture.write(10);
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67 fixture.flush();
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68
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69 assertEquals(0, counted.getWriteCount());
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70 assertEquals(1, counted.getFlushCount());
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71 assertEquals(1, fixture.getSize());
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72 }
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73
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74 @Test
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75 public void close() throws IOException {
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76 CountedOutputStream counted;
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77 CommitOutputStream fixture;
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78
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79 counted = new CountedOutputStream();
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80 fixture = new CommitOutputStream(counted);
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81
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82 fixture.write(10);
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83 fixture.close();
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84
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85 assertEquals(0, counted.getWriteCount());
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86 assertEquals(1, counted.getCloseCount());
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87 assertEquals(1, fixture.getSize());
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88 }
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89
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90 @Test
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91 public void rollback() throws IOException {
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92 m_fixture.write(10);
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93 assertEquals(1, m_fixture.getSize());
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94 m_fixture.rollback();
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95 assertEquals(0, m_fixture.getSize());
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96 m_fixture.commit();
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97 m_fixture.flush();
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98 assertEquals(0, m_result.available());
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99 }
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100
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101 @Test
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102 public void expand() throws IOException {
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103 int i;
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104
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105 for (i = 0; i < 2 * 1024; i++) {
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106 m_fixture.write(i);
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107 }
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108
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109 assertEquals(2 * 1024, m_fixture.getSize());
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110
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111 m_fixture.commit();
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112
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113 assertEquals(0, m_fixture.getSize());
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114 assertEquals(2 * 1024, m_result.available());
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115
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116 for (i = 0; i < 2 * 1024; i++) {
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117 assertEquals(i & 0x00FF, m_result.read());
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118 }
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119 }
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120
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121 @Test(expected = NullPointerException.class)
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122 public void writeNullBuffer() throws IOException {
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123 m_fixture.write(null, 0, 1);
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124 }
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125
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126 @Test(expected = IndexOutOfBoundsException.class)
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127 public void writeIndexNegOne() throws IOException {
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128 m_fixture.write(new byte[0], -1, 0);
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129 }
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130
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131 @Test(expected = IndexOutOfBoundsException.class)
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132 public void writeLengthNegOne() throws IOException {
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133 m_fixture.write(new byte[0], 0, -1);
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134 }
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135
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136 @Test(expected = IndexOutOfBoundsException.class)
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137 public void writeBeyondEnd() throws IOException {
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138 m_fixture.write(new byte[16], 8, 9);
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139 }
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140
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141 @Test
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142 public void writeLengthZero() throws IOException {
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143 m_fixture.write(new byte[1], 0, 0);
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144
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145 assertEquals(0, m_fixture.getSize());
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146 }
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147
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148 @Test
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149 public void writeArray() throws IOException {
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150 byte expected[], actual[];
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151
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152 expected = new byte[10];
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153
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154 s_random.nextBytes(expected);
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155
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156 m_fixture.write(expected);
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157 assertEquals(expected.length, m_fixture.getSize());
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158
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159 m_fixture.commit();
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160 assertEquals(0, m_fixture.getSize());
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161
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162 m_fixture.flush();
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163 assertEquals(expected.length, m_result.available());
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164
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165 actual = new byte[expected.length];
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166
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167 assertEquals(actual.length, m_result.read(actual));
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168 assertArrayEquals(expected, actual);
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169 }
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170
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171 @Test
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172 public void expandDouble() throws IOException {
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173 byte expected[], actual[];
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174
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175 expected = new byte[3 * 1024 / 2];
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176
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177 s_random.nextBytes(expected);
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178
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179 m_fixture.write(expected);
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180 assertEquals(expected.length, m_fixture.getSize());
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181
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182 m_fixture.commit();
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183 assertEquals(0, m_fixture.getSize());
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184
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185 m_fixture.flush();
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186 assertEquals(expected.length, m_result.available());
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187
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188 actual = new byte[expected.length];
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189
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190 assertEquals(actual.length, m_result.read(actual));
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191 assertArrayEquals(expected, actual);
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192 }
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193
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194 @Test
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195 public void expandTriple() throws IOException {
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196 byte expected[], actual[];
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197
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198 expected = new byte[3 * 1024];
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199
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200 s_random.nextBytes(expected);
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201
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202 m_fixture.write(expected);
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203 assertEquals(expected.length, m_fixture.getSize());
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204
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205 m_fixture.commit();
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206 assertEquals(0, m_fixture.getSize());
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207
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208 m_fixture.flush();
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209 assertEquals(expected.length, m_result.available());
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210
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211 actual = new byte[expected.length];
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212
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213 assertEquals(actual.length, m_result.read(actual));
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214 assertArrayEquals(expected, actual);
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215 }
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216
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217 private static class CountedOutputStream extends OutputStream {
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218
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219 private int m_write;
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220 private int m_flush;
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221 private int m_close;
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222
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223 @Override
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224 public void write(int data) {
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225 m_write++;
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226 }
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227
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228 public int getWriteCount() {
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229 return (m_write);
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230 }
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231
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232 @Override
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233 public void flush() {
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234 m_flush++;
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235 }
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236
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237 public int getFlushCount() {
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238 return (m_flush);
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239 }
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240
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241 @Override
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diff changeset
242 public void close() {
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243 m_close++;
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244 }
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245
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246 public int getCloseCount() {
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247 return (m_close);
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248 }
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249 }
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250 }