1 | /**************************************************************** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one * |
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3 | * or more contributor license agreements. See the NOTICE file * |
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4 | * distributed with this work for additional information * |
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5 | * regarding copyright ownership. The ASF licenses this file * |
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6 | * to you under the Apache License, Version 2.0 (the * |
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7 | * "License"); you may not use this file except in compliance * |
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8 | * 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, * |
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13 | * software distributed under the License is distributed on an * |
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14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * |
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15 | * KIND, either express or implied. See the License for the * |
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16 | * specific language governing permissions and limitations * |
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17 | * under the License. * |
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18 | ****************************************************************/ |
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19 | |
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20 | package org.apache.james.mime4j.io; |
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21 | |
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22 | import org.apache.james.mime4j.io.BufferedLineReaderInputStream; |
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23 | |
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24 | import java.io.ByteArrayInputStream; |
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25 | |
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26 | import junit.framework.TestCase; |
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27 | |
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28 | public class BufferedLineReaderInputStreamBufferTest extends TestCase { |
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29 | |
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30 | public void testInvalidInput() throws Exception { |
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31 | String text = "blah blah yada yada"; |
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32 | byte[] b1 = text.getBytes("US-ASCII"); |
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33 | String pattern = "blah"; |
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34 | byte[] b2 = pattern.getBytes("US-ASCII"); |
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35 | BufferedLineReaderInputStream inbuffer = new BufferedLineReaderInputStream(new ByteArrayInputStream(b1), 4096); |
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36 | inbuffer.fillBuffer(); |
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37 | |
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38 | assertEquals('b', inbuffer.read()); |
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39 | assertEquals('l', inbuffer.read()); |
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40 | |
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41 | try { |
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42 | inbuffer.charAt(1); |
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43 | fail("IndexOutOfBoundsException should have been thrown"); |
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44 | } catch (IndexOutOfBoundsException expected) { |
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45 | } |
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46 | try { |
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47 | inbuffer.charAt(20); |
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48 | fail("IndexOutOfBoundsException should have been thrown"); |
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49 | } catch (IndexOutOfBoundsException expected) { |
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50 | } |
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51 | try { |
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52 | inbuffer.indexOf(b2, -1, 3); |
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53 | fail("IndexOutOfBoundsException should have been thrown"); |
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54 | } catch (IndexOutOfBoundsException expected) { |
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55 | } |
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56 | try { |
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57 | inbuffer.indexOf(b2, 1, 3); |
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58 | fail("IndexOutOfBoundsException should have been thrown"); |
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59 | } catch (IndexOutOfBoundsException expected) { |
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60 | } |
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61 | try { |
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62 | inbuffer.indexOf(b2, 2, -1); |
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63 | fail("IndexOutOfBoundsException should have been thrown"); |
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64 | } catch (IndexOutOfBoundsException expected) { |
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65 | } |
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66 | try { |
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67 | inbuffer.indexOf(b2, 2, 18); |
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68 | fail("IndexOutOfBoundsException should have been thrown"); |
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69 | } catch (IndexOutOfBoundsException expected) { |
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70 | } |
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71 | assertEquals(5, inbuffer.indexOf(b2, 2, 17)); |
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72 | try { |
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73 | inbuffer.indexOf((byte)' ', -1, 3); |
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74 | fail("IndexOutOfBoundsException should have been thrown"); |
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75 | } catch (IndexOutOfBoundsException expected) { |
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76 | } |
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77 | try { |
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78 | inbuffer.indexOf((byte)' ', 1, 3); |
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79 | fail("IndexOutOfBoundsException should have been thrown"); |
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80 | } catch (IndexOutOfBoundsException expected) { |
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81 | } |
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82 | try { |
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83 | inbuffer.indexOf((byte)' ', 2, -1); |
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84 | fail("IndexOutOfBoundsException should have been thrown"); |
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85 | } catch (IndexOutOfBoundsException expected) { |
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86 | } |
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87 | try { |
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88 | inbuffer.indexOf((byte)' ', 2, 18); |
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89 | fail("IndexOutOfBoundsException should have been thrown"); |
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90 | } catch (IndexOutOfBoundsException expected) { |
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91 | } |
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92 | assertEquals(10, inbuffer.indexOf((byte)'y', 2, 17)); |
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93 | } |
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94 | |
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95 | public void testBasicOperations() throws Exception { |
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96 | String text = "bla bla yada yada haha haha"; |
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97 | byte[] b1 = text.getBytes("US-ASCII"); |
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98 | BufferedLineReaderInputStream inbuffer = new BufferedLineReaderInputStream(new ByteArrayInputStream(b1), 4096); |
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99 | inbuffer.fillBuffer(); |
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100 | assertEquals(0, inbuffer.pos()); |
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101 | assertEquals(27, inbuffer.limit()); |
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102 | assertEquals(27, inbuffer.length()); |
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103 | |
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104 | inbuffer.read(); |
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105 | inbuffer.read(); |
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106 | |
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107 | assertEquals(2, inbuffer.pos()); |
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108 | assertEquals(27, inbuffer.limit()); |
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109 | assertEquals(25, inbuffer.length()); |
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110 | |
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111 | byte[] tmp1 = new byte[3]; |
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112 | assertEquals(3, inbuffer.read(tmp1)); |
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113 | |
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114 | assertEquals(5, inbuffer.pos()); |
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115 | assertEquals(27, inbuffer.limit()); |
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116 | assertEquals(22, inbuffer.length()); |
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117 | |
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118 | byte[] tmp2 = new byte[22]; |
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119 | assertEquals(22, inbuffer.read(tmp2)); |
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120 | |
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121 | assertEquals(27, inbuffer.pos()); |
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122 | assertEquals(27, inbuffer.limit()); |
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123 | assertEquals(0, inbuffer.length()); |
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124 | |
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125 | assertEquals(-1, inbuffer.read(tmp1)); |
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126 | assertEquals(-1, inbuffer.read(tmp1)); |
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127 | assertEquals(-1, inbuffer.read()); |
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128 | assertEquals(-1, inbuffer.read()); |
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129 | } |
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130 | |
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131 | public void testPatternMatching1() throws Exception { |
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132 | String text = "blabla d is the word"; |
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133 | String pattern = "d"; |
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134 | byte[] b1 = text.getBytes("US-ASCII"); |
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135 | byte[] b2 = pattern.getBytes("US-ASCII"); |
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136 | BufferedLineReaderInputStream inbuffer = new BufferedLineReaderInputStream(new ByteArrayInputStream(b1), 4096); |
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137 | inbuffer.fillBuffer(); |
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138 | int i = inbuffer.indexOf(b2); |
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139 | assertEquals(7, i); |
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140 | } |
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141 | |
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142 | public void testPatternMatching2() throws Exception { |
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143 | String text = "disddisdissdsidsidsiid"; |
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144 | String pattern = "siid"; |
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145 | byte[] b1 = text.getBytes("US-ASCII"); |
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146 | byte[] b2 = pattern.getBytes("US-ASCII"); |
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147 | BufferedLineReaderInputStream inbuffer = new BufferedLineReaderInputStream(new ByteArrayInputStream(b1), 4096); |
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148 | inbuffer.fillBuffer(); |
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149 | int i = inbuffer.indexOf(b2); |
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150 | assertEquals(18, i); |
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151 | } |
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152 | |
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153 | public void testPatternMatching3() throws Exception { |
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154 | String text = "bla bla yada yada haha haha"; |
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155 | String pattern = "blah"; |
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156 | byte[] b1 = text.getBytes("US-ASCII"); |
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157 | byte[] b2 = pattern.getBytes("US-ASCII"); |
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158 | BufferedLineReaderInputStream inbuffer = new BufferedLineReaderInputStream(new ByteArrayInputStream(b1), 4096); |
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159 | inbuffer.fillBuffer(); |
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160 | int i = inbuffer.indexOf(b2); |
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161 | assertEquals(-1, i); |
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162 | } |
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163 | |
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164 | public void testPatternMatching4() throws Exception { |
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165 | String text = "bla bla yada yada haha haha"; |
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166 | String pattern = "bla"; |
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167 | byte[] b1 = text.getBytes("US-ASCII"); |
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168 | byte[] b2 = pattern.getBytes("US-ASCII"); |
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169 | BufferedLineReaderInputStream inbuffer = new BufferedLineReaderInputStream(new ByteArrayInputStream(b1), 4096); |
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170 | inbuffer.fillBuffer(); |
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171 | int i = inbuffer.indexOf(b2); |
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172 | assertEquals(0, i); |
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173 | } |
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174 | |
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175 | public void testPatternOutOfBound() throws Exception { |
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176 | String text = "bla bla yada yada haha haha"; |
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177 | String pattern1 = "bla bla"; |
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178 | byte[] b1 = text.getBytes("US-ASCII"); |
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179 | byte[] b2 = pattern1.getBytes("US-ASCII"); |
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180 | BufferedLineReaderInputStream inbuffer = new BufferedLineReaderInputStream(new ByteArrayInputStream(b1), 4096); |
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181 | inbuffer.fillBuffer(); |
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182 | byte[] tmp = new byte[3]; |
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183 | inbuffer.read(tmp); |
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184 | int i = inbuffer.indexOf(b2, inbuffer.pos(), inbuffer.length()); |
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185 | assertEquals(-1, i); |
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186 | i = inbuffer.indexOf(b2, inbuffer.pos(), inbuffer.length() - 1); |
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187 | assertEquals(-1, i); |
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188 | } |
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189 | |
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190 | public void testCharOutOfBound() throws Exception { |
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191 | String text = "zzz blah blah blah ggg"; |
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192 | byte[] b1 = text.getBytes("US-ASCII"); |
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193 | BufferedLineReaderInputStream inbuffer = new BufferedLineReaderInputStream(new ByteArrayInputStream(b1), 4096); |
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194 | inbuffer.fillBuffer(); |
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195 | byte[] tmp = new byte[3]; |
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196 | inbuffer.read(tmp); |
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197 | int i = inbuffer.indexOf((byte)'z', inbuffer.pos(), inbuffer.length()); |
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198 | assertEquals(-1, i); |
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199 | i = inbuffer.indexOf((byte)'g', inbuffer.pos(), inbuffer.length() - 3); |
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200 | assertEquals(-1, i); |
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201 | } |
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202 | |
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203 | public void test0xFFInBinaryStream() throws Exception { |
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204 | byte[] b1 = new byte[] {1, 2, 3, (byte) 0xff, 10, 1, 2, 3}; |
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205 | byte[] b2 = new byte[] {10}; |
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206 | BufferedLineReaderInputStream inbuffer = new BufferedLineReaderInputStream(new ByteArrayInputStream(b1), 4096); |
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207 | inbuffer.fillBuffer(); |
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208 | int i = inbuffer.indexOf(b2); |
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209 | assertEquals(4, i); |
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210 | } |
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211 | } |
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