515 lines
17 KiB
Java
515 lines
17 KiB
Java
/*
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* Copyright (c) 2001, 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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/* @test
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* @bug 4417152 4481572 6248930 6725399 6884800 8220477 8275149
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* @summary Test Channels basic functionality
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*/
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import java.io.*;
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import java.nio.*;
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import java.nio.charset.*;
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import java.nio.channels.*;
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public class Basic {
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static String message;
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static String encoding;
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static File blah;
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static int ITERATIONS = 500;
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public static void main(String[] args) throws Exception {
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message = "ascii data for a test";
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encoding = "ISO-8859-1";
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test();
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message = "\ucafe\ubabe\ucafe\ubabe\ucafe\ubabe";
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encoding = "UTF-8";
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test();
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}
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static void failNpeExpected() {
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throw new RuntimeException("Did not get the expected NullPointerException.");
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}
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private static void test() throws Exception {
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//Test if methods of Channels throw NPE with null argument(s)
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try {
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Channels.newInputStream((ReadableByteChannel)null);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newOutputStream((WritableByteChannel)null);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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ReadableByteChannel channel = Channels.newChannel((InputStream)null);
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failNpeExpected();
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} catch (NullPointerException ne) {} // OK. As expected.
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try {
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WritableByteChannel channel = Channels.newChannel((OutputStream)null);
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failNpeExpected();
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} catch (NullPointerException ne) {} // OK. As expected.
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WritableByteChannel wbc = new WritableByteChannel() {
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public int write(ByteBuffer src) { return 0; }
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public void close() throws IOException { }
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public boolean isOpen() { return true; }
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};
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ReadableByteChannel rbc = new ReadableByteChannel() {
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public int read(ByteBuffer dst) { return 0; }
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public void close() {}
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public boolean isOpen() { return true; }
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};
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try {
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Channels.newReader((ReadableByteChannel)null,
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Charset.defaultCharset().newDecoder(),
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-1);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newReader(rbc, (CharsetDecoder)null, -1);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newReader((ReadableByteChannel)null,
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Charset.defaultCharset().name());
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newReader(rbc, (String)null);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newReader(null, (String)null);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newReader(rbc, (Charset)null);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newReader(null, (Charset)null);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newWriter((WritableByteChannel)null,
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Charset.defaultCharset().newEncoder(),
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-1);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newWriter(null, null, -1);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newWriter(wbc, null, -1);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newWriter((WritableByteChannel)null,
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Charset.defaultCharset().name());
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newWriter(wbc, (String)null);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newWriter(null, (String)null);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newWriter(wbc, (Charset)null);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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Channels.newWriter(null, (Charset)null);
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failNpeExpected();
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} catch (NullPointerException npe) {}
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try {
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blah = File.createTempFile("blah", null);
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testNewOutputStream(blah);
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readAndCheck(blah);
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blah.delete();
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writeOut(blah, ITERATIONS);
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testNewInputStream(blah);
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blah.delete();
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testNewChannelOut(blah);
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readAndCheck(blah);
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blah.delete();
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testNewChannelWriteAfterClose(blah);
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testNewChannelReadAfterClose(blah);
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blah.delete();
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writeOut(blah, ITERATIONS);
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testNewChannelIn(blah);
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test4481572(blah);
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blah.delete();
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testNewWriter(blah);
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readAndCheck(blah);
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blah.delete();
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writeOut(blah, ITERATIONS);
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testNewReader(blah);
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testNewWriterClose();
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testNewReaderClose();
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} finally {
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blah.delete();
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}
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}
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private static void readAndCheck(File blah) throws Exception {
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FileInputStream fis = new FileInputStream(blah);
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int messageSize = message.length() * ITERATIONS * 3 + 1;
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byte bb[] = new byte[messageSize];
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int bytesRead = 0;
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int totalRead = 0;
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while (bytesRead != -1) {
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totalRead += bytesRead;
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bytesRead = fis.read(bb, totalRead, messageSize - totalRead);
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}
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String result = new String(bb, 0, totalRead, encoding);
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int len = message.length();
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for (int i=0; i<ITERATIONS; i++) {
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String segment = result.substring(i++ * len, i * len);
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if (!segment.equals(message))
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throw new RuntimeException("Test failed");
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}
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fis.close();
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}
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private static void writeOut(File blah, int limit) throws Exception {
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FileOutputStream fos = new FileOutputStream(blah);
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for (int i=0; i<limit; i++)
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fos.write(message.getBytes(encoding));
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fos.close();
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}
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private static void testNewOutputStream(File blah) throws Exception {
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FileOutputStream fos = new FileOutputStream(blah);
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FileChannel fc = fos.getChannel();
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WritableByteChannel wbc = (WritableByteChannel)fc;
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OutputStream os = Channels.newOutputStream(wbc);
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for (int i=0; i<ITERATIONS; i++)
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os.write(message.getBytes(encoding));
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os.close();
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fos.close();
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}
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private static void testNewInputStream(File blah) throws Exception {
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FileInputStream fis = new FileInputStream(blah);
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FileChannel fc = fis.getChannel();
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InputStream is = Channels.newInputStream(fc);
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int messageSize = message.length() * ITERATIONS * 3 + 1;
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byte bb[] = new byte[messageSize];
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int bytesRead = 0;
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int totalRead = 0;
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while (bytesRead != -1) {
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totalRead += bytesRead;
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long rem = Math.min(fc.size() - totalRead, (long)Integer.MAX_VALUE);
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if (is.available() != (int)rem)
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throw new RuntimeException("available not useful or not maximally useful");
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bytesRead = is.read(bb, totalRead, messageSize - totalRead);
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}
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if (is.available() != 0)
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throw new RuntimeException("available() should return 0 at EOF");
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String result = new String(bb, 0, totalRead, encoding);
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int len = message.length();
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for (int i=0; i<ITERATIONS; i++) {
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String segment = result.substring(i++ * len, i * len);
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if (!segment.equals(message))
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throw new RuntimeException("Test failed");
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}
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is.close();
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fis.close();
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}
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private static void testNewChannelOut(File blah) throws Exception {
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ExtendedFileOutputStream fos = new ExtendedFileOutputStream(blah);
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WritableByteChannel wbc = Channels.newChannel(fos);
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for (int i=0; i<ITERATIONS; i++)
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wbc.write(ByteBuffer.wrap(message.getBytes(encoding)));
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wbc.close();
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fos.close();
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}
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private static void testNewChannelIn(File blah) throws Exception {
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ExtendedFileInputStream fis = new ExtendedFileInputStream(blah);
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ReadableByteChannel rbc = Channels.newChannel(fis);
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int messageSize = message.length() * ITERATIONS * 3;
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byte data[] = new byte[messageSize+1];
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ByteBuffer bb = ByteBuffer.wrap(data);
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try {
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rbc.read(bb.asReadOnlyBuffer());
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throw new RuntimeException("IllegalArgumentException not thrown");
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} catch (IllegalArgumentException expected) {
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// ignore it
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}
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int bytesRead = 0;
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int totalRead = 0;
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while (bytesRead != -1) {
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totalRead += bytesRead;
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bytesRead = rbc.read(bb);
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}
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String result = new String(data, 0, totalRead, encoding);
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int len = message.length();
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for (int i=0; i<ITERATIONS; i++) {
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String segment = result.substring(i++ * len, i * len);
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if (!segment.equals(message))
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throw new RuntimeException("Test failed");
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}
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rbc.close();
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fis.close();
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}
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private static void testNewChannelWriteAfterClose(File blah)
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throws Exception {
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try (ExtendedFileOutputStream fos =
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new ExtendedFileOutputStream(blah)) {
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WritableByteChannel wbc = Channels.newChannel(fos);
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wbc.close();
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try {
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wbc.write(ByteBuffer.allocate(0));
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throw new RuntimeException
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("No ClosedChannelException on WritableByteChannel::write");
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} catch (ClosedChannelException expected) {
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}
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}
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}
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private static void testNewChannelReadAfterClose(File blah)
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throws Exception {
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try (ExtendedFileInputStream fis = new ExtendedFileInputStream(blah)) {
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ReadableByteChannel rbc = Channels.newChannel(fis);
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rbc.close();
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try {
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rbc.read(ByteBuffer.allocate(0));
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throw new RuntimeException
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("No ClosedChannelException on ReadableByteChannel::read");
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} catch (ClosedChannelException expected) {
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}
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}
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}
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// Causes BufferOverflowException if bug 4481572 is present.
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private static void test4481572(File blah) throws Exception {
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ExtendedFileInputStream fis = new ExtendedFileInputStream(blah);
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ReadableByteChannel rbc = Channels.newChannel(fis);
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byte data[] = new byte[9000];
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ByteBuffer bb = ByteBuffer.wrap(data);
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int bytesRead = 1;
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int totalRead = 0;
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while (bytesRead > 0) {
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totalRead += bytesRead;
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bytesRead = rbc.read(bb);
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}
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rbc.close();
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fis.close();
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}
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private static void testNewWriter(File blah) throws Exception {
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FileOutputStream fos = new FileOutputStream(blah);
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WritableByteChannel wbc = (WritableByteChannel)fos.getChannel();
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Writer w = Channels.newWriter(wbc, encoding);
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char data[] = new char[40];
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message.getChars(0, message.length(), data, 0);
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for (int i=0; i<ITERATIONS; i++)
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w.write(data, 0, message.length());
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w.flush();
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w.close();
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fos.close();
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}
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private static void testNewReader(File blah) throws Exception {
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FileInputStream fis = new FileInputStream(blah);
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ReadableByteChannel rbc = (ReadableByteChannel)fis.getChannel();
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Reader r = Channels.newReader(rbc, encoding);
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int messageSize = message.length() * ITERATIONS;
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char data[] = new char[messageSize];
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int totalRead = 0;
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int charsRead = 0;
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while (totalRead < messageSize) {
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totalRead += charsRead;
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charsRead = r.read(data, totalRead, messageSize - totalRead);
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}
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String result = new String(data, 0, totalRead);
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int len = message.length();
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for (int i=0; i<ITERATIONS; i++) {
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String segment = result.substring(i++ * len, i * len);
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if (!segment.equals(message))
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throw new RuntimeException("Test failed");
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}
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r.close();
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fis.close();
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}
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private static void testNewWriterClose() throws Exception {
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Writer writer = null;
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try {
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WritableByteChannel channel = new WritableByteChannel() {
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@Override
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public int write(ByteBuffer src) throws IOException {
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return 0;
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}
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@Override
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public boolean isOpen() {
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return true;
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}
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@Override
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public void close() throws IOException {
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throw new IOException();
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}
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};
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writer = Channels.newWriter(channel,
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StandardCharsets.UTF_8.newEncoder(), -1);
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writer.close();
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} catch (IOException ioe) {
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Exception theException = null;
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try {
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writer.write(1);
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writer.flush();
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} catch (Exception e) {
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theException = e;
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} finally {
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if (theException == null) {
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throw new RuntimeException("IOException not thrown");
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} else if (!(theException instanceof IOException)) {
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throw new RuntimeException("Exception not an IOException: "
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+ theException);
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} else {
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String message = theException.getMessage();
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if (!message.equals("Stream closed")) {
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throw new RuntimeException("Unexpected message "
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+ message);
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}
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}
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}
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}
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}
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private static void testNewReaderClose() throws Exception {
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Reader reader = null;
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try {
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ReadableByteChannel channel = new ReadableByteChannel() {
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@Override
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public int read(ByteBuffer dst) throws IOException {
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dst.put((byte)7);
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return 1;
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}
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@Override
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public boolean isOpen() {
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return true;
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}
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@Override
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public void close() throws IOException {
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throw new IOException();
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}
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};
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reader = Channels.newReader(channel,
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StandardCharsets.UTF_8.newDecoder(), -1);
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reader.close();
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} catch (IOException ioe) {
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Exception theException = null;
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try {
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reader.read();
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} catch (Exception e) {
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theException = e;
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} finally {
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if (theException == null) {
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throw new RuntimeException("IOException not thrown");
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} else if (!(theException instanceof IOException)) {
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throw new RuntimeException("Exception not an IOException: "
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+ theException);
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} else {
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String message = theException.getMessage();
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if (!message.equals("Stream closed")) {
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throw new RuntimeException("Unexpected message "
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+ message);
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}
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}
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}
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}
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}
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}
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class ExtendedFileInputStream extends java.io.FileInputStream {
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ExtendedFileInputStream(File file) throws FileNotFoundException {
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super(file);
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}
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}
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class ExtendedFileOutputStream extends java.io.FileOutputStream {
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ExtendedFileOutputStream(File file) throws FileNotFoundException {
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super(file);
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}
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}
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