77 lines
2.8 KiB
Java
77 lines
2.8 KiB
Java
/*
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* Copyright (c) 2019, 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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/**
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* @test
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* @bug 8187898
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* @summary Test of writeBytes(byte[])
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*/
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import java.io.BufferedOutputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.PrintStream;
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import java.util.Arrays;
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public class WriteBytes {
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public static void main(String[] args) throws Exception {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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OutputStream out = new BufferedOutputStream(baos, 512);
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PrintStream ps = new PrintStream(out, false);
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byte[] buf = new byte[128];
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for (int i = 0; i < buf.length; i++) {
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buf[i] = (byte)i;
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}
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ps.writeBytes(buf);
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assertTrue(baos.size() == 0, "Buffer should not have been flushed");
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ps.close();
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assertTrue(baos.size() == buf.length, "Stream size " + baos.size() +
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" but expected " + buf.length);
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ps = new PrintStream(out, true);
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ps.writeBytes(buf);
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assertTrue(baos.size() == 2*buf.length, "Stream size " + baos.size() +
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" but expected " + 2*buf.length);
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byte[] arr = baos.toByteArray();
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assertTrue(arr.length == 2*buf.length, "Array length " + arr.length +
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" but expected " + 2*buf.length);
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assertTrue(Arrays.equals(buf, 0, buf.length, arr, 0, buf.length),
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"First write not equal");
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assertTrue(Arrays.equals(buf, 0, buf.length, arr, buf.length,
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2*buf.length), "Second write not equal");
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ps.close();
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ps.writeBytes(buf);
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assertTrue(ps.checkError(), "Error condition should be true");
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}
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private static void assertTrue(boolean condition, String msg) {
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if (!condition)
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throw new RuntimeException(msg);
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}
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}
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