93 lines
3.5 KiB
Java
93 lines
3.5 KiB
Java
/*
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* Copyright (c) 2018, 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.util.Arrays;
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import java.util.Objects;
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import java.util.Random;
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import jdk.test.lib.RandomFactory;
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/* @test
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* @library /test/lib
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* @build jdk.test.lib.RandomFactory
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* @run main ReadAllReadNTransferTo
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* @bug 6766844 8180451
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* @summary Verify ByteArrayInputStream readAllBytes, readNBytes, and transferTo
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* @key randomness
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*/
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public class ReadAllReadNTransferTo {
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private static final int SIZE = 0x4d4d;
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private static Random random = RandomFactory.getRandom();
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public static void main(String... args) throws IOException {
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byte[] buf = new byte[SIZE];
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random.nextBytes(buf);
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int position = random.nextInt(SIZE/2);
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int size = random.nextInt(SIZE - position);
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ByteArrayInputStream bais = new ByteArrayInputStream(buf);
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bais.readAllBytes();
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if (bais.read(new byte[0]) != -1) {
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throw new RuntimeException("read(byte[]) did not return -1");
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}
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if (bais.read(new byte[1], 0, 0) != -1) {
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throw new RuntimeException("read(byte[],int,int) did not return -1");
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}
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bais = new ByteArrayInputStream(buf, position, size);
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int off = size < 2 ? 0 : random.nextInt(size / 2);
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int len = size - off < 1 ? 0 : random.nextInt(size - off);
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byte[] bN = new byte[off + len];
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if (bais.readNBytes(bN, off, len) != len) {
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throw new RuntimeException("readNBytes return value");
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}
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if (!Arrays.equals(bN, off, off + len,
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buf, position, position + len)) {
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throw new RuntimeException("readNBytes content");
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}
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byte[] bAll = bais.readAllBytes();
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Objects.requireNonNull(bAll, "readAllBytes return value");
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if (bAll.length != size - len) {
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throw new RuntimeException("readAllBytes return value length");
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}
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if (!Arrays.equals(bAll, 0, bAll.length,
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buf, position + len, position + len + bAll.length)) {
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throw new RuntimeException("readAllBytes content");
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}
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bais = new ByteArrayInputStream(buf);
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ByteArrayOutputStream baos = new ByteArrayOutputStream(buf.length);
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if (bais.transferTo(baos) != buf.length) {
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throw new RuntimeException("transferTo return value length");
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}
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if (!Arrays.equals(buf, baos.toByteArray())) {
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throw new RuntimeException("transferTo content");
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}
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}
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}
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