1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 */ 19 package org.apache.commons.compress.compressors.deflate; 20 21 import java.io.File; 22 import java.io.FileInputStream; 23 import java.io.IOException; 24 import java.io.InputStream; 25 26 import org.apache.commons.compress.AbstractTestCase; 27 import org.apache.commons.compress.utils.IOUtils; 28 import org.junit.Assert; 29 import org.junit.Test; 30 31 public class DeflateCompressorInputStreamTest { 32 33 @Test 34 public void availableShouldReturnNonZero() throws IOException { 35 final File input = AbstractTestCase.getFile("bla.tar.deflatez"); 36 try (InputStream is = new FileInputStream(input)) { 37 final DeflateCompressorInputStream in = 38 new DeflateCompressorInputStream(is); 39 Assert.assertTrue(in.available() > 0); 40 in.close(); 41 } 42 } 43 44 @Test 45 public void shouldBeAbleToSkipAByte() throws IOException { 46 final File input = AbstractTestCase.getFile("bla.tar.deflatez"); 47 try (InputStream is = new FileInputStream(input)) { 48 final DeflateCompressorInputStream in = 49 new DeflateCompressorInputStream(is); 50 Assert.assertEquals(1, in.skip(1)); 51 in.close(); 52 } 53 } 54 55 @Test 56 public void singleByteReadWorksAsExpected() throws IOException { 57 final File input = AbstractTestCase.getFile("bla.tar.deflatez"); 58 try (InputStream is = new FileInputStream(input)) { 59 final DeflateCompressorInputStream in = 60 new DeflateCompressorInputStream(is); 61 // tar header starts with filename "test1.xml" 62 Assert.assertEquals('t', in.read()); 63 in.close(); 64 } 65 } 66 67 @Test 68 public void singleByteReadConsistentlyReturnsMinusOneAtEof() throws IOException { 69 final File input = AbstractTestCase.getFile("bla.tar.deflatez"); 70 try (InputStream is = new FileInputStream(input)) { 71 final DeflateCompressorInputStream in = 72 new DeflateCompressorInputStream(is); 73 IOUtils.toByteArray(in); 74 Assert.assertEquals(-1, in.read()); 75 Assert.assertEquals(-1, in.read()); 76 in.close(); 77 } 78 } 79 80 @Test 81 public void multiByteReadConsistentlyReturnsMinusOneAtEof() throws IOException { 82 final File input = AbstractTestCase.getFile("bla.tar.deflatez"); 83 byte[] buf = new byte[2]; 84 try (InputStream is = new FileInputStream(input)) { 85 final DeflateCompressorInputStream in = 86 new DeflateCompressorInputStream(is); 87 IOUtils.toByteArray(in); 88 Assert.assertEquals(-1, in.read(buf)); 89 Assert.assertEquals(-1, in.read(buf)); 90 in.close(); 91 } 92 } 93 94 } 95
