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/*
* Copyright (c) 2023, 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.
*/
import java.io.IOException;
import java.io.Writer;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.StandardSocketOptions;
import java.nio.ByteBuffer;
import java.nio.channels.Channels;
import java.nio.channels.IllegalBlockingModeException;
import java.nio.channels.SocketChannel;
import java.nio.channels.WritableByteChannel;
import java.nio.charset.StandardCharsets;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;
/**
* @test
* @bug 8295797
* @summary Test behavior of Channels.newWriter for WritableByteChannels
* @run junit NewWriter
*/
public class NewWriter {
private static final String STRING = "test";
private static final int COUNT = 5;
private static final int EXPECTED = COUNT*STRING.length();
private int actual = 0;
@Test
public void customWritableByteChannel() throws IOException {
try (Writer writer = Channels.newWriter(new WritableByteChannel() {
@Override
public int write(ByteBuffer src) {
System.out.print((char) src.get());
actual++;
return 1;
}
@Override
public boolean isOpen() {
return true;
}
@Override
public void close() {
}
}, StandardCharsets.UTF_8)) {
for (int i = 1; i <= COUNT; i++) {
writer.write(STRING);
writer.flush();
System.out.println(i);
}
}
assertEquals(EXPECTED, actual);
}
@Test
public void socketChannel() throws IOException {
Throwable thrown = assertThrows(IllegalBlockingModeException.class,
() -> {
try (ServerSocket ss = new ServerSocket();
SocketChannel sc = SocketChannel.open()) {
InetAddress lb = InetAddress.getLoopbackAddress();
ss.bind(new InetSocketAddress(lb, 0));
sc.connect(ss.getLocalSocketAddress());
sc.configureBlocking(false);
try (Writer writer = Channels.newWriter(sc,
StandardCharsets.UTF_8)) {
for (int i = 1; i < Integer.MAX_VALUE; i++) {
writer.write("test" + i);
}
}
}
});
}
}
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