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 | import org.apache.james.mime4j.io.LineReaderInputStream; |
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24 | import org.apache.james.mime4j.io.MaxLineLimitException; |
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25 | import org.apache.james.mime4j.util.ByteArrayBuffer; |
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26 | |
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27 | import java.io.ByteArrayInputStream; |
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28 | import java.io.ByteArrayOutputStream; |
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29 | |
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30 | import junit.framework.TestCase; |
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31 | |
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32 | public class BufferedLineReaderInputStreamTest extends TestCase { |
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33 | |
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34 | public void testBasicOperations() throws Exception { |
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35 | String text = "ah blahblah"; |
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36 | byte[] b1 = text.getBytes("US-ASCII"); |
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37 | BufferedLineReaderInputStream instream = new BufferedLineReaderInputStream(new ByteArrayInputStream(b1), 4096); |
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38 | |
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39 | assertEquals((byte)'a', instream.read()); |
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40 | assertEquals((byte)'h', instream.read()); |
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41 | assertEquals((byte)' ', instream.read()); |
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42 | |
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43 | byte[] tmp1 = new byte[4]; |
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44 | assertEquals(4, instream.read(tmp1)); |
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45 | assertEquals(4, instream.read(tmp1)); |
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46 | |
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47 | assertEquals(-1, instream.read(tmp1)); |
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48 | assertEquals(-1, instream.read(tmp1)); |
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49 | assertEquals(-1, instream.read()); |
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50 | assertEquals(-1, instream.read()); |
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51 | } |
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52 | |
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53 | public void testBasicReadLine() throws Exception { |
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54 | |
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55 | String[] teststrs = new String[5]; |
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56 | teststrs[0] = "Hello\r\n"; |
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57 | teststrs[1] = "This string should be much longer than the size of the input buffer " + |
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58 | "which is only 16 bytes for this test\r\n"; |
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59 | StringBuilder sb = new StringBuilder(); |
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60 | for (int i = 0; i < 15; i++) { |
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61 | sb.append("123456789 "); |
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62 | } |
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63 | sb.append("and stuff like that\r\n"); |
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64 | teststrs[2] = sb.toString(); |
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65 | teststrs[3] = "\r\n"; |
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66 | teststrs[4] = "And goodbye\r\n"; |
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67 | |
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68 | ByteArrayOutputStream outstream = new ByteArrayOutputStream(); |
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69 | |
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70 | for (String teststr : teststrs) { |
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71 | outstream.write(teststr.getBytes("US-ASCII")); |
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72 | } |
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73 | byte[] raw = outstream.toByteArray(); |
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74 | |
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75 | BufferedLineReaderInputStream instream = new BufferedLineReaderInputStream(new ByteArrayInputStream(raw), 16); |
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76 | |
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77 | ByteArrayBuffer linebuf = new ByteArrayBuffer(8); |
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78 | for (String teststr : teststrs) { |
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79 | linebuf.clear(); |
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80 | instream.readLine(linebuf); |
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81 | String s = new String(linebuf.toByteArray(), "US-ASCII"); |
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82 | assertEquals(teststr, s); |
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83 | } |
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84 | assertEquals(-1, instream.readLine(linebuf)); |
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85 | assertEquals(-1, instream.readLine(linebuf)); |
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86 | } |
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87 | |
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88 | public void testReadEmptyLine() throws Exception { |
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89 | |
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90 | String teststr = "\n\n\r\n\r\r\n\n\n\n\n\n"; |
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91 | byte[] raw = teststr.getBytes("US-ASCII"); |
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92 | |
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93 | LineReaderInputStream instream = new BufferedLineReaderInputStream(new ByteArrayInputStream(raw), 4); |
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94 | |
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95 | ByteArrayBuffer linebuf = new ByteArrayBuffer(8); |
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96 | linebuf.clear(); |
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97 | instream.readLine(linebuf); |
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98 | String s = new String(linebuf.toByteArray(), "US-ASCII"); |
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99 | assertEquals("\n", s); |
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100 | |
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101 | linebuf.clear(); |
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102 | instream.readLine(linebuf); |
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103 | s = new String(linebuf.toByteArray(), "US-ASCII"); |
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104 | assertEquals("\n", s); |
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105 | |
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106 | linebuf.clear(); |
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107 | instream.readLine(linebuf); |
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108 | s = new String(linebuf.toByteArray(), "US-ASCII"); |
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109 | assertEquals("\r\n", s); |
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110 | |
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111 | linebuf.clear(); |
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112 | instream.readLine(linebuf); |
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113 | s = new String(linebuf.toByteArray(), "US-ASCII"); |
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114 | assertEquals("\r\r\n", s); |
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115 | |
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116 | linebuf.clear(); |
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117 | instream.readLine(linebuf); |
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118 | s = new String(linebuf.toByteArray(), "US-ASCII"); |
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119 | assertEquals("\n", s); |
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120 | |
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121 | linebuf.clear(); |
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122 | instream.readLine(linebuf); |
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123 | s = new String(linebuf.toByteArray(), "US-ASCII"); |
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124 | assertEquals("\n", s); |
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125 | |
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126 | linebuf.clear(); |
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127 | instream.readLine(linebuf); |
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128 | s = new String(linebuf.toByteArray(), "US-ASCII"); |
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129 | assertEquals("\n", s); |
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130 | |
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131 | linebuf.clear(); |
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132 | instream.readLine(linebuf); |
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133 | s = new String(linebuf.toByteArray(), "US-ASCII"); |
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134 | assertEquals("\n", s); |
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135 | |
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136 | linebuf.clear(); |
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137 | instream.readLine(linebuf); |
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138 | s = new String(linebuf.toByteArray(), "US-ASCII"); |
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139 | assertEquals("\n", s); |
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140 | |
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141 | assertEquals(-1, instream.readLine(linebuf)); |
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142 | assertEquals(-1, instream.readLine(linebuf)); |
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143 | } |
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144 | |
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145 | public void testReadEmptyLineMaxLimit() throws Exception { |
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146 | |
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147 | String teststr = "1234567890\r\n"; |
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148 | byte[] raw = teststr.getBytes("US-ASCII"); |
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149 | |
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150 | LineReaderInputStream instream1 = new BufferedLineReaderInputStream( |
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151 | new ByteArrayInputStream(raw), 1024, 13); |
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152 | ByteArrayBuffer linebuf = new ByteArrayBuffer(8); |
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153 | linebuf.clear(); |
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154 | instream1.readLine(linebuf); |
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155 | |
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156 | LineReaderInputStream instream2 = new BufferedLineReaderInputStream( |
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157 | new ByteArrayInputStream(raw), 1024, 12); |
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158 | linebuf.clear(); |
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159 | try { |
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160 | instream2.readLine(linebuf); |
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161 | fail("MaxLineLimitException should have been thrown"); |
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162 | } catch (MaxLineLimitException ex) { |
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163 | } |
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164 | } |
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165 | |
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166 | } |
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