/* * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /** * @test * @bug 8187898 * @summary Test of writeBytes(byte[]) */ package test.java.io.PrintStream; import java.io.BufferedOutputStream; import java.io.ByteArrayOutputStream; import java.io.OutputStream; import java.io.PrintStream; import java.util.Arrays; import org.testng.annotations.Test; import static org.testng.Assert.assertEquals; import static org.testng.Assert.assertTrue; public class WriteBytes { @Test public void testWriteBytes() { ByteArrayOutputStream baos = new ByteArrayOutputStream(); OutputStream out = new BufferedOutputStream(baos, 512); PrintStream ps = new PrintStream(out, false); byte[] buf = new byte[128]; for (int i = 0; i < buf.length; i++) { buf[i] = (byte)i; } ps.writeBytes(buf); assertEquals(baos.size(), 0, "Buffer should not have been flushed"); ps.close(); assertEquals(baos.size(), buf.length, "Stream size " + baos.size() + " but expected " + buf.length); ps = new PrintStream(out, true); ps.writeBytes(buf); assertEquals(baos.size(), 2*buf.length, "Stream size " + baos.size() + " but expected " + 2*buf.length); byte[] arr = baos.toByteArray(); assertEquals(arr.length, 2*buf.length, "Array length " + arr.length + " but expected " + 2*buf.length); assertTrue(Arrays.equals(buf, 0, buf.length, arr, 0, buf.length), "First write not equal"); assertTrue(Arrays.equals(buf, 0, buf.length, arr, buf.length, 2*buf.length), "Second write not equal"); ps.close(); ps.writeBytes(buf); assertTrue(ps.checkError(), "Error condition should be true"); } }