| /* |
| * 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.io.input; |
| |
| import static org.junit.jupiter.api.Assertions.assertArrayEquals; |
| import static org.junit.jupiter.api.Assertions.assertThrows; |
| |
| import java.io.ByteArrayInputStream; |
| import java.util.Random; |
| |
| import org.apache.commons.codec.digest.DigestUtils; |
| import org.apache.commons.codec.digest.MessageDigestAlgorithms; |
| import org.junit.jupiter.api.Test; |
| |
| /** |
| * Tests {@link MessageDigestInputStream}. |
| */ |
| public class MessageDigestInputStreamTest { |
| |
| static byte[] generateRandomByteStream(final int pSize) { |
| final byte[] buffer = new byte[pSize]; |
| final Random rnd = new Random(); |
| rnd.nextBytes(buffer); |
| return buffer; |
| } |
| |
| @Test |
| public void testNoDefault() throws Exception { |
| assertThrows(IllegalStateException.class, () -> MessageDigestInputStream.builder().get()); |
| assertThrows(NullPointerException.class, () -> MessageDigestInputStream.builder().setInputStream(new ByteArrayInputStream(new byte[] { 1 })).get()); |
| } |
| |
| @Test |
| public void testNormalUse() throws Exception { |
| for (int i = 256; i < 8192; i *= 2) { |
| final byte[] buffer = generateRandomByteStream(i); |
| final byte[] expect = DigestUtils.sha512(buffer); |
| try (MessageDigestInputStream messageDigestInputStream = MessageDigestInputStream.builder().setMessageDigest(MessageDigestAlgorithms.SHA_512) |
| .setInputStream(new ByteArrayInputStream(buffer)).get()) { |
| messageDigestInputStream.consume(); |
| assertArrayEquals(expect, messageDigestInputStream.getMessageDigest().digest()); |
| } |
| try (MessageDigestInputStream messageDigestInputStream = MessageDigestInputStream.builder().setByteArray(buffer) |
| .setMessageDigest(DigestUtils.getSha512Digest()).get()) { |
| messageDigestInputStream.consume(); |
| assertArrayEquals(expect, messageDigestInputStream.getMessageDigest().digest()); |
| } |
| } |
| } |
| |
| } |