1 /* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 import java.io.ByteArrayInputStream; 25 import java.io.ByteArrayOutputStream; 26 import java.io.IOException; 27 import java.util.Arrays; 28 import java.util.Objects; 29 import java.util.Random; 30 import jdk.test.lib.RandomFactory; 31 32 /* @test 33 * @library /test/lib 34 * @build jdk.test.lib.RandomFactory 35 * @run main ReadAllReadNTransferTo 36 * @bug 8180451 37 * @summary Verify ByteArrayInputStream readAllBytes, readNBytes, and transferTo 38 * @key randomness 39 */ 40 public class ReadAllReadNTransferTo { 41 private static final int SIZE = 0x4d4d; 42 43 private static Random random = RandomFactory.getRandom(); 44 45 public static void main(String... args) throws IOException { 46 byte[] buf = new byte[SIZE]; 47 random.nextBytes(buf); 48 int offset = random.nextInt(SIZE/2); 49 int length = random.nextInt(SIZE - offset); 50 51 ByteArrayInputStream bais = 52 new ByteArrayInputStream(buf, offset, length); 53 int off = random.nextInt(length/2); 54 int len = random.nextInt(length - off); 55 56 byte[] bN = new byte[off + len]; 57 if (bais.readNBytes(bN, off, len) != len) { 58 throw new RuntimeException("readNBytes return value"); 59 } 60 if (!Arrays.equals(bN, off, off + len, 61 buf, offset, offset + len)) { 62 throw new RuntimeException("readNBytes content"); 63 } 64 65 byte[] bAll = bais.readAllBytes(); 66 Objects.requireNonNull(bAll, "readAllBytes return value"); 67 if (bAll.length != length - len) { 68 throw new RuntimeException("readAllBytes return value length"); 69 } 70 if (!Arrays.equals(bAll, 0, bAll.length, 71 buf, offset + len, offset + len + bAll.length)) { 72 throw new RuntimeException("readAllBytes content"); 73 } 74 75 // XXX transferTo() 76 bais = new ByteArrayInputStream(buf); 77 ByteArrayOutputStream baos = new ByteArrayOutputStream(buf.length); 78 if (bais.transferTo(baos) != buf.length) { 79 throw new RuntimeException("transferTo return value length"); 80 } 81 if (!Arrays.equals(buf, baos.toByteArray())) { 82 throw new RuntimeException("transferTo content"); 83 } 84 } 85 }