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.codec; |
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21 | |
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22 | import java.io.ByteArrayInputStream; |
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23 | import java.io.ByteArrayOutputStream; |
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24 | import java.io.InputStream; |
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25 | import java.nio.charset.Charset; |
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26 | import java.util.Arrays; |
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27 | |
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28 | import junit.framework.TestCase; |
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29 | |
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30 | import org.apache.commons.io.IOUtils; |
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31 | import org.apache.james.mime4j.util.CharsetUtil; |
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32 | |
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33 | public class QuotedPrintableEncodeTest extends TestCase { |
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34 | |
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35 | @Override |
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36 | protected void setUp() throws Exception { |
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37 | super.setUp(); |
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38 | } |
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39 | |
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40 | @Override |
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41 | protected void tearDown() throws Exception { |
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42 | super.tearDown(); |
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43 | } |
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44 | |
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45 | public void testEscapedSoftBreak() throws Exception { |
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46 | byte[] content = new byte[500]; |
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47 | Arrays.fill(content, (byte)0x20); |
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48 | byte[] expected = new byte[1557]; |
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49 | int index = 0; |
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50 | for (int l=0;l<20;l++) { |
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51 | for (int i=0;i<25;i++) { |
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52 | expected[index++] = '='; |
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53 | expected[index++] = '2'; |
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54 | expected[index++] = '0'; |
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55 | } |
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56 | if (l<19) { |
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57 | expected[index++] = '='; |
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58 | expected[index++] = '\r'; |
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59 | expected[index++] = '\n'; |
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60 | } |
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61 | } |
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62 | check(content, expected); |
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63 | } |
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64 | |
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65 | public void testPlainAsciiSoftBreak() throws Exception { |
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66 | byte[] content = new byte[500]; |
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67 | Arrays.fill(content, (byte)0x29); |
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68 | byte[] expected = new byte[518]; |
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69 | Arrays.fill(expected, (byte)0x29); |
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70 | expected[75] = '='; |
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71 | expected[76] = '\r'; |
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72 | expected[77] = '\n'; |
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73 | expected[153] = '='; |
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74 | expected[154] = '\r'; |
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75 | expected[155] = '\n'; |
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76 | expected[231] = '='; |
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77 | expected[232] = '\r'; |
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78 | expected[233] = '\n'; |
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79 | expected[309] = '='; |
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80 | expected[310] = '\r'; |
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81 | expected[311] = '\n'; |
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82 | expected[387] = '='; |
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83 | expected[388] = '\r'; |
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84 | expected[389] = '\n'; |
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85 | expected[465] = '='; |
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86 | expected[466] = '\r'; |
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87 | expected[467] = '\n'; |
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88 | check(content, expected); |
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89 | } |
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90 | |
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91 | public void testPlainASCII() throws Exception { |
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92 | checkRoundtrip("Thisisaverysimplemessage.Thisisaverysimplemessage.Thisisaverysimplemessage." + |
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93 | "Thisisaverysimplemessage.Thisisaverysimplemessage.Thisisaverysimplemessage." + |
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94 | "Thisisaverysimplemessage.Thisisaverysimplemessage.Thisisaverysimplemessage." + |
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95 | "Thisisaverysimplemessage.Thisisaverysimplemessage.Thisisaverysimplemessage."); |
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96 | } |
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97 | |
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98 | public void testEncodeSpace() throws Exception { |
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99 | checkRoundtrip(" "); |
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100 | } |
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101 | |
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102 | public void testLetterEncoding() throws Exception { |
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103 | for (byte b=0;b<Byte.MAX_VALUE;b++) { |
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104 | byte[] content = {b}; |
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105 | checkRoundtrip(content); |
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106 | } |
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107 | } |
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108 | |
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109 | private void checkRoundtrip(String content) throws Exception { |
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110 | checkRoundtrip(content, CharsetUtil.US_ASCII); |
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111 | } |
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112 | |
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113 | private void checkRoundtrip(String content, Charset charset) throws Exception { |
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114 | checkRoundtrip(charset.encode(content).array()); |
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115 | } |
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116 | |
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117 | private void checkRoundtrip(byte[] content) throws Exception { |
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118 | InputStream in = new ByteArrayInputStream(content); |
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119 | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
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120 | CodecUtil.encodeQuotedPrintableBinary(in, out); |
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121 | // read back through decoder |
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122 | in = new QuotedPrintableInputStream(new ByteArrayInputStream(out.toByteArray())); |
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123 | out = new ByteArrayOutputStream(); |
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124 | IOUtils.copy(in, out); |
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125 | assertEquals(content, out.toByteArray()); |
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126 | } |
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127 | |
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128 | private void check(byte[] content, byte[] expected) throws Exception { |
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129 | ByteArrayInputStream in = new ByteArrayInputStream(content); |
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130 | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
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131 | CodecUtil.encodeQuotedPrintableBinary(in, out); |
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132 | assertEquals(expected, out.toByteArray()); |
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133 | } |
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134 | |
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135 | private void assertEquals(byte[] expected, byte[] actual) { |
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136 | assertEquals(expected.length, actual.length); |
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137 | for (int i = 0; i < actual.length; i++) { |
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138 | assertEquals("Mismatch@" + i, expected[i], actual[i]); |
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139 | } |
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140 | } |
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141 | } |
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