author | tschatzl |
Wed, 24 Jul 2019 11:49:39 +0200 | |
changeset 57508 | 28ab01c06755 |
parent 49489 | f5e614a1ed98 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2018, 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 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 = |
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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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// XXX transferTo() |
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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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} |