| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.compress.utils; |
| |
| import org.junit.Test; |
| |
| import java.io.BufferedInputStream; |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.util.zip.Adler32; |
| import java.util.zip.CRC32; |
| |
| import static org.junit.Assert.*; |
| |
| /** |
| * Unit tests for class {@link ChecksumCalculatingInputStream org.apache.commons.compress.utils.ChecksumCalculatingInputStream}. |
| * |
| * @date 13.06.2017 |
| * @see ChecksumCalculatingInputStream |
| **/ |
| public class ChecksumCalculatingInputStreamTest { |
| |
| |
| |
| @Test |
| public void testSkipReturningZero() throws IOException { |
| |
| Adler32 adler32 = new Adler32(); |
| byte[] byteArray = new byte[0]; |
| ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArray); |
| ChecksumCalculatingInputStream checksumCalculatingInputStream = new ChecksumCalculatingInputStream(adler32, byteArrayInputStream); |
| long skipResult = checksumCalculatingInputStream.skip(60L); |
| |
| assertEquals(0L, skipResult); |
| |
| assertEquals(1L, checksumCalculatingInputStream.getValue()); |
| |
| |
| } |
| |
| |
| @Test |
| public void testSkipReturningPositive() throws IOException { |
| |
| Adler32 adler32 = new Adler32(); |
| byte[] byteArray = new byte[6]; |
| ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArray); |
| ChecksumCalculatingInputStream checksumCalculatingInputStream = new ChecksumCalculatingInputStream(adler32, byteArrayInputStream); |
| long skipResult = checksumCalculatingInputStream.skip((byte)0); |
| |
| assertEquals(1L, skipResult); |
| |
| assertEquals(65537L, checksumCalculatingInputStream.getValue()); |
| |
| } |
| |
| |
| @Test |
| public void testReadTakingNoArguments() throws IOException { |
| |
| Adler32 adler32 = new Adler32(); |
| byte[] byteArray = new byte[6]; |
| ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArray); |
| ChecksumCalculatingInputStream checksumCalculatingInputStream = new ChecksumCalculatingInputStream(adler32, byteArrayInputStream); |
| BufferedInputStream bufferedInputStream = new BufferedInputStream(checksumCalculatingInputStream); |
| int inputStreamReadResult = bufferedInputStream.read(byteArray, 0, 1); |
| int checkSumCalculationReadResult = checksumCalculatingInputStream.read(); |
| |
| assertFalse(checkSumCalculationReadResult == inputStreamReadResult); |
| assertEquals((-1), checkSumCalculationReadResult); |
| |
| assertEquals(0, byteArrayInputStream.available()); |
| |
| assertEquals(393217L, checksumCalculatingInputStream.getValue()); |
| |
| } |
| |
| |
| @Test |
| public void testReadTakingByteArray() throws IOException { |
| |
| Adler32 adler32 = new Adler32(); |
| byte[] byteArray = new byte[6]; |
| ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArray); |
| ChecksumCalculatingInputStream checksumCalculatingInputStream = new ChecksumCalculatingInputStream(adler32, byteArrayInputStream); |
| int readResult = checksumCalculatingInputStream.read(byteArray); |
| |
| assertEquals(6, readResult); |
| |
| assertEquals(0, byteArrayInputStream.available()); |
| assertEquals(393217L, checksumCalculatingInputStream.getValue()); |
| |
| } |
| |
| |
| @Test(expected = NullPointerException.class) |
| public void testClassInstantiationWithParameterBeingNullThrowsNullPointerExceptionOne() { |
| |
| ChecksumCalculatingInputStream checksumCalculatingInputStream = new ChecksumCalculatingInputStream(null,null); |
| |
| |
| } |
| |
| |
| @Test(expected = NullPointerException.class) |
| public void testClassInstantiationWithParameterBeingNullThrowsNullPointerExceptionTwo() { |
| |
| ChecksumCalculatingInputStream checksumCalculatingInputStream = new ChecksumCalculatingInputStream(null,new ByteArrayInputStream(new byte[1])); |
| |
| |
| } |
| |
| |
| @Test(expected = NullPointerException.class) |
| public void testClassInstantiationWithParameterBeingNullThrowsNullPointerExceptionThree() { |
| |
| ChecksumCalculatingInputStream checksumCalculatingInputStream = new ChecksumCalculatingInputStream(new CRC32(),null); |
| |
| } |
| |
| |
| } |