[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.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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