1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 19 package org.apache.commons.compress; 20 21 import static org.junit.Assert.*; 22 23 import java.io.ByteArrayOutputStream; 24 import java.io.File; 25 import java.io.FileInputStream; 26 import java.io.InputStream; 27 import java.io.OutputStream; 28 29 import org.apache.commons.compress.archivers.ArchiveEntry; 30 import org.apache.commons.compress.archivers.ArchiveInputStream; 31 import org.apache.commons.compress.archivers.ArchiveOutputStream; 32 import org.apache.commons.compress.archivers.ar.ArArchiveEntry; 33 import org.apache.commons.compress.archivers.cpio.CpioArchiveEntry; 34 import org.apache.commons.compress.archivers.jar.JarArchiveEntry; 35 import org.apache.commons.compress.archivers.tar.TarArchiveEntry; 36 import org.apache.commons.compress.archivers.zip.ZipArchiveEntry; 37 import org.junit.Test; 38 39 /** 40 * Check that the different write methods create the same output. 41 * TODO perform the same checks for reads. 42 */ 43 public class IOMethodsTest extends AbstractTestCase { 44 45 private static final int bytesToTest = 50; 46 private static final byte[] byteTest = new byte[bytesToTest]; 47 static { 48 for(int i=0; i < byteTest.length ;) { 49 byteTest[i]=(byte) i; 50 byteTest[i+1]=(byte) -i; 51 i += 2; 52 } 53 } 54 55 @Test 56 public void testWriteAr() throws Exception { 57 final ArchiveEntry entry = new ArArchiveEntry("dummy", bytesToTest); 58 compareWrites("ar", entry); 59 } 60 61 @Test 62 public void testWriteCpio() throws Exception { 63 final ArchiveEntry entry = new CpioArchiveEntry("dummy", bytesToTest); 64 compareWrites("cpio", entry); 65 } 66 67 @Test 68 public void testWriteJar() throws Exception { 69 final ArchiveEntry entry = new JarArchiveEntry("dummy"); 70 compareWrites("jar", entry); 71 } 72 73 @Test 74 public void testWriteTar() throws Exception { 75 final TarArchiveEntry entry = new TarArchiveEntry("dummy"); 76 entry.setSize(bytesToTest); 77 compareWrites("tar", entry); 78 } 79 80 @Test 81 public void testWriteZip() throws Exception { 82 final ArchiveEntry entry = new ZipArchiveEntry("dummy"); 83 compareWrites("zip", entry); 84 } 85 86 @Test 87 public void testReadAr() throws Exception { 88 compareReads("ar"); 89 } 90 91 @Test 92 public void testReadCpio() throws Exception { 93 compareReads("cpio"); 94 } 95 96 @Test 97 public void testReadJar() throws Exception { 98 compareReads("jar"); 99 } 100 101 @Test 102 public void testReadTar() throws Exception { 103 compareReads("tar"); 104 } 105 106 @Test 107 public void testReadZip() throws Exception { 108 compareReads("zip"); 109 } 110 111 private void compareWrites(final String archiverName, final ArchiveEntry entry) throws Exception { 112 final OutputStream out1 = new ByteArrayOutputStream(); 113 final OutputStream out2 = new ByteArrayOutputStream(); 114 final OutputStream out3 = new ByteArrayOutputStream(); 115 final ArchiveOutputStream aos1 = factory.createArchiveOutputStream(archiverName, out1); 116 aos1.putArchiveEntry(entry); 117 final ArchiveOutputStream aos2 = factory.createArchiveOutputStream(archiverName, out2); 118 aos2.putArchiveEntry(entry); 119 final ArchiveOutputStream aos3 = factory.createArchiveOutputStream(archiverName, out3); 120 aos3.putArchiveEntry(entry); 121 for (final byte element : byteTest) { 122 aos1.write(element); 123 } 124 aos1.closeArchiveEntry(); 125 aos1.close(); 126 127 aos2.write(byteTest); 128 aos2.closeArchiveEntry(); 129 aos2.close(); 130 131 aos3.write(byteTest, 0, byteTest.length); 132 aos3.closeArchiveEntry(); 133 aos3.close(); 134 assertEquals("aos1Bytes!=aos2Bytes",aos1.getBytesWritten(),aos2.getBytesWritten()); 135 assertEquals("aos1Bytes!=aos3Bytes",aos1.getBytesWritten(),aos3.getBytesWritten()); 136 assertEquals("out1Len!=out2Len",out1.toString().length(),out2.toString().length()); 137 assertEquals("out1Len!=out2Len",out1.toString().length(),out3.toString().length()); 138 assertEquals("out1!=out2",out1.toString(),out2.toString()); 139 assertEquals("out1!=out3",out1.toString(),out3.toString()); 140 } 141 142 private void compareReads(final String archiverName) throws Exception { 143 final OutputStream out1 = new ByteArrayOutputStream(); 144 final OutputStream out2 = new ByteArrayOutputStream(); 145 final OutputStream out3 = new ByteArrayOutputStream(); 146 final File file = createSingleEntryArchive(archiverName); 147 file.deleteOnExit(); 148 149 final InputStream is1 = new FileInputStream(file); 150 final ArchiveInputStream ais1 = factory.createArchiveInputStream(archiverName, is1); 151 final ArchiveEntry nextEntry = ais1.getNextEntry(); 152 assertNotNull(nextEntry); 153 154 final byte [] buff = new byte[10]; // small so multiple reads are needed; 155 final long size = nextEntry.getSize(); 156 if (size != ArchiveEntry.SIZE_UNKNOWN) { 157 assertTrue("Size should be > 0, found: "+size, size > 0); 158 } 159 160 final InputStream is2 = new FileInputStream(file); 161 final ArchiveInputStream ais2 = factory.createArchiveInputStream(archiverName, is2); 162 final ArchiveEntry nextEntry2 = ais2.getNextEntry(); 163 assertNotNull(nextEntry2); 164 assertEquals("Expected same entry size", size, nextEntry2.getSize()); 165 166 final InputStream is3 = new FileInputStream(file); 167 final ArchiveInputStream ais3 = factory.createArchiveInputStream(archiverName, is3); 168 final ArchiveEntry nextEntry3 = ais3.getNextEntry(); 169 assertNotNull(nextEntry3); 170 assertEquals("Expected same entry size", size, nextEntry3.getSize()); 171 172 int b; 173 while((b=ais1.read()) != -1){ 174 out1.write(b); 175 } 176 ais1.close(); 177 178 int bytes; 179 while((bytes = ais2.read(buff)) > 0){ 180 out2.write(buff, 0, bytes); 181 } 182 ais2.close(); 183 184 while((bytes=ais3.read(buff, 0 , buff.length)) > 0){ 185 out3.write(buff, 0, bytes); 186 } 187 ais3.close(); 188 189 assertEquals("out1Len!=out2Len",out1.toString().length(),out2.toString().length()); 190 assertEquals("out1Len!=out3Len",out1.toString().length(),out3.toString().length()); 191 assertEquals("out1!=out2",out1.toString(),out2.toString()); 192 assertEquals("out1!=out3",out1.toString(),out3.toString()); 193 } 194 } 195
