[6785] | 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.ByteArrayOutputStream; |
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| 23 | import java.io.IOException; |
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| 24 | import java.io.OutputStream; |
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| 25 | import java.io.UnsupportedEncodingException; |
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| 26 | |
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| 27 | import junit.framework.TestCase; |
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| 28 | |
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| 29 | public class Base64OutputStreamTest extends TestCase { |
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| 30 | |
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| 31 | public void testEncode() throws IOException { |
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| 32 | ByteArrayOutputStream bos = null; |
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| 33 | Base64OutputStream encoder = null; |
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| 34 | |
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| 35 | /* |
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| 36 | * Simple initial test. |
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| 37 | */ |
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| 38 | bos = new ByteArrayOutputStream(); |
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| 39 | encoder = new Base64OutputStream(bos); |
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| 40 | encoder.write(fromString("This is the plain text message!")); |
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| 41 | encoder.close(); |
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| 42 | assertEquals("VGhpcyBpcyB0aGUgcGxhaW4gdGV4dCBtZXNzYWdlIQ==\r\n", toString(bos.toByteArray())); |
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| 43 | } |
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| 44 | |
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| 45 | public void testEncodeUnderlyingStreamStaysOpen() throws IOException { |
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| 46 | ByteArrayOutputStream bos = null; |
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| 47 | Base64OutputStream encoder = null; |
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| 48 | |
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| 49 | bos = new ByteArrayOutputStream(); |
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| 50 | encoder = new Base64OutputStream(bos); |
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| 51 | encoder.write(fromString("This is the plain text message!")); |
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| 52 | encoder.close(); |
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| 53 | |
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| 54 | try { |
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| 55 | encoder.write('b'); |
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| 56 | fail(); |
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| 57 | } catch (IOException expected) { |
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| 58 | } |
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| 59 | |
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| 60 | bos.write('y'); |
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| 61 | bos.write('a'); |
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| 62 | bos.write('d'); |
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| 63 | bos.write('a'); |
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| 64 | assertEquals("VGhpcyBpcyB0aGUgcGxhaW4gdGV4dCBtZXNzYWdlIQ==\r\nyada", toString(bos.toByteArray())); |
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| 65 | } |
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| 66 | |
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| 67 | public void testNoLineSeparators() throws IOException { |
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| 68 | assertEquals("", encodeNoLs("")); |
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| 69 | assertEquals("YQ==", encodeNoLs("a")); |
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| 70 | assertEquals("YWI=", encodeNoLs("ab")); |
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| 71 | assertEquals("YWJj", encodeNoLs("abc")); |
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| 72 | assertEquals("YWJjZA==", encodeNoLs("abcd")); |
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| 73 | assertEquals("YWJjZGU=", encodeNoLs("abcde")); |
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| 74 | assertEquals("YWJjZGVm", encodeNoLs("abcdef")); |
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| 75 | assertEquals("YWJjZGVmZw==", encodeNoLs("abcdefg")); |
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| 76 | assertEquals("YWJjZGVmZ2g=", encodeNoLs("abcdefgh")); |
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| 77 | assertEquals("YWJjZGVmZ2hp", encodeNoLs("abcdefghi")); |
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| 78 | assertEquals("DQoMCQ==", encodeNoLs("\r\n\f\t")); |
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| 79 | assertEquals("LT0/VGhhdCdzIGEgdGVzdD89LQ==", |
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| 80 | encodeNoLs("-=?That's a test?=-")); |
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| 81 | } |
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| 82 | |
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| 83 | public void testLineSeparators() throws IOException { |
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| 84 | assertEquals("", encodeLs("")); |
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| 85 | assertEquals("YQ==\r\n", encodeLs("a")); |
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| 86 | assertEquals("YWJjZA==\r\n", encodeLs("abcd")); |
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| 87 | assertEquals("YWJjZGVmZw==\r\n", encodeLs("abcdefg")); |
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| 88 | assertEquals("YWJjZGVmZ2g=\r\n", encodeLs("abcdefgh")); |
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| 89 | assertEquals("YWJjZGVmZ2hp\r\n", encodeLs("abcdefghi")); |
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| 90 | assertEquals("YWJjZGVmZ2hp\r\nag==\r\n", encodeLs("abcdefghij")); |
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| 91 | assertEquals("YWJjZGVmZ2hp\r\nams=\r\n", encodeLs("abcdefghijk")); |
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| 92 | assertEquals("YWJjZGVmZ2hp\r\namts\r\n", encodeLs("abcdefghijkl")); |
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| 93 | } |
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| 94 | |
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| 95 | /** |
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| 96 | * tests {@link OutputStream#write(int)} |
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| 97 | */ |
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| 98 | public void testWriteInt() throws IOException { |
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| 99 | byte[] bytes = fromString("123456789012345678901234567890123456789012" |
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| 100 | + "3456789012345678901234567890123456789012345678901234567890" |
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| 101 | + "123456789012345"); |
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| 102 | |
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| 103 | ByteArrayOutputStream b = new ByteArrayOutputStream(); |
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| 104 | Base64OutputStream out = new Base64OutputStream(b); |
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| 105 | |
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| 106 | for (byte element : bytes) |
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| 107 | out.write(element); |
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| 108 | |
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| 109 | out.close(); |
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| 110 | |
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| 111 | String actual = new String(b.toByteArray(), "US-ASCII"); |
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| 112 | |
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| 113 | String expected = "MTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTIzNDU2Nz" |
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| 114 | + "g5MDEyMzQ1Njc4OTAxMjM0NTY3\r\nODkwMTIzNDU2Nzg5MDEyMzQ1Njc4" |
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| 115 | + "OTAxMjM0NTY3ODkwMTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0\r\nNQ==\r" |
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| 116 | + "\n"; |
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| 117 | |
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| 118 | assertEquals(expected, actual); |
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| 119 | } |
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| 120 | |
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| 121 | /** |
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| 122 | * tests {@link OutputStream#write(byte[], int, int)} with various offsets |
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| 123 | */ |
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| 124 | public void testWriteOffset() throws IOException { |
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| 125 | byte[] bytes = fromString("123456789012345678901234567890123456789012" |
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| 126 | + "3456789012345678901234567890123456789012345678901234567890" |
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| 127 | + "123456789012345"); |
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| 128 | |
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| 129 | ByteArrayOutputStream b = new ByteArrayOutputStream(); |
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| 130 | Base64OutputStream out = new Base64OutputStream(b); |
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| 131 | |
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| 132 | for (int offset = 0; offset < bytes.length; offset += 2) { |
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| 133 | int len = Math.min(2, bytes.length - offset); |
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| 134 | out.write(bytes, offset, len); |
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| 135 | } |
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| 136 | |
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| 137 | out.close(); |
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| 138 | |
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| 139 | String actual = new String(b.toByteArray(), "US-ASCII"); |
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| 140 | |
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| 141 | String expected = "MTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTIzNDU2Nz" |
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| 142 | + "g5MDEyMzQ1Njc4OTAxMjM0NTY3\r\nODkwMTIzNDU2Nzg5MDEyMzQ1Njc4" |
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| 143 | + "OTAxMjM0NTY3ODkwMTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0\r\nNQ==\r" |
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| 144 | + "\n"; |
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| 145 | |
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| 146 | assertEquals(expected, actual); |
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| 147 | } |
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| 148 | |
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| 149 | /** |
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| 150 | * tests {@link OutputStream#flush()} while writing |
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| 151 | */ |
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| 152 | public void testWriteFlush() throws IOException { |
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| 153 | byte[] bytes = fromString("123456789012345678901234567890123456789012" |
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| 154 | + "3456789012345678901234567890123456789012345678901234567890" |
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| 155 | + "123456789012345"); |
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| 156 | |
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| 157 | ByteArrayOutputStream b = new ByteArrayOutputStream(); |
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| 158 | Base64OutputStream out = new Base64OutputStream(b); |
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| 159 | |
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| 160 | for (int offset = 0; offset < bytes.length; offset += 7) { |
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| 161 | int len = Math.min(7, bytes.length - offset); |
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| 162 | out.write(bytes, offset, len); |
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| 163 | out.flush(); |
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| 164 | } |
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| 165 | |
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| 166 | out.close(); |
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| 167 | |
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| 168 | String actual = new String(b.toByteArray(), "US-ASCII"); |
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| 169 | |
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| 170 | String expected = "MTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTIzNDU2Nz" |
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| 171 | + "g5MDEyMzQ1Njc4OTAxMjM0NTY3\r\nODkwMTIzNDU2Nzg5MDEyMzQ1Njc4" |
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| 172 | + "OTAxMjM0NTY3ODkwMTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0\r\nNQ==\r" |
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| 173 | + "\n"; |
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| 174 | |
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| 175 | assertEquals(expected, actual); |
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| 176 | } |
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| 177 | |
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| 178 | private String encodeNoLs(String str) throws IOException { |
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| 179 | return encode(str, 0, new byte[] {}); |
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| 180 | } |
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| 181 | |
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| 182 | private String encodeLs(String str) throws IOException { |
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| 183 | return encode(str, 12, new byte[] { '\r', '\n' }); |
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| 184 | } |
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| 185 | |
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| 186 | private String encode(String str, int lineLength, byte[] lineSeparator) |
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| 187 | throws IOException { |
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| 188 | byte[] bytes = fromString(str); |
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| 189 | |
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| 190 | ByteArrayOutputStream b = new ByteArrayOutputStream(); |
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| 191 | Base64OutputStream out = new Base64OutputStream(b, lineLength, |
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| 192 | lineSeparator); |
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| 193 | |
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| 194 | out.write(bytes); |
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| 195 | out.close(); |
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| 196 | |
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| 197 | return toString(b.toByteArray()); |
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| 198 | } |
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| 199 | |
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| 200 | private byte[] fromString(String s) { |
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| 201 | try { |
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| 202 | return s.getBytes("US-ASCII"); |
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| 203 | } catch (UnsupportedEncodingException e) { |
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| 204 | fail(e.getMessage()); |
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| 205 | return null; |
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| 206 | } |
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| 207 | } |
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| 208 | |
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| 209 | private String toString(byte[] b) { |
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| 210 | try { |
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| 211 | return new String(b, "US-ASCII"); |
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| 212 | } catch (UnsupportedEncodingException e) { |
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| 213 | fail(e.getMessage()); |
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| 214 | return null; |
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| 215 | } |
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| 216 | } |
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| 217 | } |
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