| /* |
| * Copyright (c) 2001, 2008, 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 4417152 4481572 6248930 6725399 6884800 |
| * @summary Test Channels basic functionality |
| */ |
| |
| import java.io.*; |
| import java.nio.*; |
| import java.nio.charset.*; |
| import java.nio.channels.*; |
| |
| |
| public class Basic { |
| |
| static String message; |
| |
| static String encoding; |
| |
| static File blah; |
| |
| static int ITERATIONS = 500; |
| |
| public static void main(String[] args) throws Exception { |
| message = "ascii data for a test"; |
| encoding = "ISO-8859-1"; |
| test(); |
| message = "\ucafe\ubabe\ucafe\ubabe\ucafe\ubabe"; |
| encoding = "UTF-8"; |
| test(); |
| } |
| |
| static void failNpeExpected() { |
| throw new RuntimeException("Did not get the expected NullPointerException."); |
| } |
| |
| private static void test() throws Exception { |
| //Test if methods of Channels throw NPE with null argument(s) |
| try { |
| Channels.newInputStream((ReadableByteChannel)null); |
| failNpeExpected(); |
| } catch (NullPointerException npe) {} |
| |
| try { |
| Channels.newOutputStream((WritableByteChannel)null); |
| failNpeExpected(); |
| } catch (NullPointerException npe) {} |
| |
| try { |
| ReadableByteChannel channel = Channels.newChannel((InputStream)null); |
| failNpeExpected(); |
| } catch (NullPointerException ne) {} // OK. As expected. |
| |
| try { |
| WritableByteChannel channel = Channels.newChannel((OutputStream)null); |
| failNpeExpected(); |
| } catch (NullPointerException ne) {} // OK. As expected. |
| |
| WritableByteChannel wbc = new WritableByteChannel() { |
| public int write(ByteBuffer src) { return 0; } |
| public void close() throws IOException { } |
| public boolean isOpen() { return true; } |
| }; |
| |
| ReadableByteChannel rbc = new ReadableByteChannel() { |
| public int read(ByteBuffer dst) { return 0; } |
| public void close() {} |
| public boolean isOpen() { return true; } |
| }; |
| |
| try { |
| Channels.newReader((ReadableByteChannel)null, |
| Charset.defaultCharset().newDecoder(), |
| -1); |
| failNpeExpected(); |
| } catch (NullPointerException npe) {} |
| |
| try { |
| Channels.newReader(rbc, (CharsetDecoder)null, -1); |
| failNpeExpected(); |
| } catch (NullPointerException npe) {} |
| |
| try { |
| Channels.newReader((ReadableByteChannel)null, |
| Charset.defaultCharset().name()); |
| failNpeExpected(); |
| } catch (NullPointerException npe) {} |
| |
| try { |
| Channels.newReader(rbc, null); |
| failNpeExpected(); |
| } catch (NullPointerException npe) {} |
| |
| |
| try { |
| Channels.newReader(null, null); |
| failNpeExpected(); |
| } catch (NullPointerException npe) {} |
| |
| try { |
| Channels.newWriter((WritableByteChannel)null, |
| Charset.defaultCharset().newEncoder(), |
| -1); |
| failNpeExpected(); |
| } catch (NullPointerException npe) {} |
| |
| try { |
| Channels.newWriter(null, null, -1); |
| failNpeExpected(); |
| } catch (NullPointerException npe) {} |
| |
| try { |
| Channels.newWriter(wbc, null, -1); |
| failNpeExpected(); |
| } catch (NullPointerException npe) {} |
| |
| try { |
| Channels.newWriter((WritableByteChannel)null, |
| Charset.defaultCharset().name()); |
| failNpeExpected(); |
| } catch (NullPointerException npe) {} |
| |
| try { |
| Channels.newWriter(wbc, null); |
| failNpeExpected(); |
| } catch (NullPointerException npe) {} |
| |
| try { |
| Channels.newWriter(null, null); |
| failNpeExpected(); |
| } catch (NullPointerException npe) {} |
| |
| |
| try { |
| blah = File.createTempFile("blah", null); |
| |
| testNewOutputStream(blah); |
| readAndCheck(blah); |
| blah.delete(); |
| |
| writeOut(blah, ITERATIONS); |
| testNewInputStream(blah); |
| blah.delete(); |
| |
| testNewChannelOut(blah); |
| readAndCheck(blah); |
| blah.delete(); |
| |
| writeOut(blah, ITERATIONS); |
| testNewChannelIn(blah); |
| test4481572(blah); |
| blah.delete(); |
| |
| testNewWriter(blah); |
| readAndCheck(blah); |
| blah.delete(); |
| |
| writeOut(blah, ITERATIONS); |
| testNewReader(blah); |
| |
| } finally { |
| blah.delete(); |
| } |
| } |
| |
| private static void readAndCheck(File blah) throws Exception { |
| FileInputStream fis = new FileInputStream(blah); |
| int messageSize = message.length() * ITERATIONS * 3 + 1; |
| byte bb[] = new byte[messageSize]; |
| int bytesRead = 0; |
| int totalRead = 0; |
| while (bytesRead != -1) { |
| totalRead += bytesRead; |
| bytesRead = fis.read(bb, totalRead, messageSize - totalRead); |
| } |
| String result = new String(bb, 0, totalRead, encoding); |
| int len = message.length(); |
| for (int i=0; i<ITERATIONS; i++) { |
| String segment = result.substring(i++ * len, i * len); |
| if (!segment.equals(message)) |
| throw new RuntimeException("Test failed"); |
| } |
| fis.close(); |
| } |
| |
| private static void writeOut(File blah, int limit) throws Exception { |
| FileOutputStream fos = new FileOutputStream(blah); |
| for (int i=0; i<limit; i++) |
| fos.write(message.getBytes(encoding)); |
| fos.close(); |
| } |
| |
| private static void testNewOutputStream(File blah) throws Exception { |
| FileOutputStream fos = new FileOutputStream(blah); |
| FileChannel fc = fos.getChannel(); |
| WritableByteChannel wbc = (WritableByteChannel)fc; |
| OutputStream os = Channels.newOutputStream(wbc); |
| for (int i=0; i<ITERATIONS; i++) |
| os.write(message.getBytes(encoding)); |
| os.close(); |
| fos.close(); |
| } |
| |
| private static void testNewInputStream(File blah) throws Exception { |
| FileInputStream fis = new FileInputStream(blah); |
| FileChannel fc = fis.getChannel(); |
| InputStream is = Channels.newInputStream(fc); |
| int messageSize = message.length() * ITERATIONS * 3 + 1; |
| byte bb[] = new byte[messageSize]; |
| |
| int bytesRead = 0; |
| int totalRead = 0; |
| while (bytesRead != -1) { |
| totalRead += bytesRead; |
| long rem = Math.min(fc.size() - totalRead, (long)Integer.MAX_VALUE); |
| if (is.available() != (int)rem) |
| throw new RuntimeException("available not useful or not maximally useful"); |
| bytesRead = is.read(bb, totalRead, messageSize - totalRead); |
| } |
| if (is.available() != 0) |
| throw new RuntimeException("available() should return 0 at EOF"); |
| |
| String result = new String(bb, 0, totalRead, encoding); |
| int len = message.length(); |
| for (int i=0; i<ITERATIONS; i++) { |
| String segment = result.substring(i++ * len, i * len); |
| if (!segment.equals(message)) |
| throw new RuntimeException("Test failed"); |
| } |
| is.close(); |
| fis.close(); |
| } |
| |
| private static void testNewChannelOut(File blah) throws Exception { |
| ExtendedFileOutputStream fos = new ExtendedFileOutputStream(blah); |
| WritableByteChannel wbc = Channels.newChannel(fos); |
| for (int i=0; i<ITERATIONS; i++) |
| wbc.write(ByteBuffer.wrap(message.getBytes(encoding))); |
| wbc.close(); |
| fos.close(); |
| } |
| |
| private static void testNewChannelIn(File blah) throws Exception { |
| ExtendedFileInputStream fis = new ExtendedFileInputStream(blah); |
| ReadableByteChannel rbc = Channels.newChannel(fis); |
| |
| int messageSize = message.length() * ITERATIONS * 3; |
| byte data[] = new byte[messageSize+1]; |
| ByteBuffer bb = ByteBuffer.wrap(data); |
| |
| int bytesRead = 0; |
| int totalRead = 0; |
| while (bytesRead != -1) { |
| totalRead += bytesRead; |
| bytesRead = rbc.read(bb); |
| } |
| |
| String result = new String(data, 0, totalRead, encoding); |
| int len = message.length(); |
| for (int i=0; i<ITERATIONS; i++) { |
| String segment = result.substring(i++ * len, i * len); |
| if (!segment.equals(message)) |
| throw new RuntimeException("Test failed"); |
| } |
| rbc.close(); |
| fis.close(); |
| } |
| |
| // Causes BufferOverflowException if bug 4481572 is present. |
| private static void test4481572(File blah) throws Exception { |
| ExtendedFileInputStream fis = new ExtendedFileInputStream(blah); |
| ReadableByteChannel rbc = Channels.newChannel(fis); |
| |
| byte data[] = new byte[9000]; |
| ByteBuffer bb = ByteBuffer.wrap(data); |
| |
| int bytesRead = 1; |
| int totalRead = 0; |
| while (bytesRead > 0) { |
| totalRead += bytesRead; |
| bytesRead = rbc.read(bb); |
| } |
| rbc.close(); |
| fis.close(); |
| } |
| |
| private static void testNewWriter(File blah) throws Exception { |
| FileOutputStream fos = new FileOutputStream(blah); |
| WritableByteChannel wbc = (WritableByteChannel)fos.getChannel(); |
| Writer w = Channels.newWriter(wbc, encoding); |
| char data[] = new char[40]; |
| message.getChars(0, message.length(), data, 0); |
| for (int i=0; i<ITERATIONS; i++) |
| w.write(data, 0, message.length()); |
| w.flush(); |
| w.close(); |
| fos.close(); |
| } |
| |
| private static void testNewReader(File blah) throws Exception { |
| FileInputStream fis = new FileInputStream(blah); |
| ReadableByteChannel rbc = (ReadableByteChannel)fis.getChannel(); |
| Reader r = Channels.newReader(rbc, encoding); |
| |
| int messageSize = message.length() * ITERATIONS; |
| char data[] = new char[messageSize]; |
| |
| int totalRead = 0; |
| int charsRead = 0; |
| while (totalRead < messageSize) { |
| totalRead += charsRead; |
| charsRead = r.read(data, totalRead, messageSize - totalRead); |
| } |
| String result = new String(data, 0, totalRead); |
| int len = message.length(); |
| for (int i=0; i<ITERATIONS; i++) { |
| String segment = result.substring(i++ * len, i * len); |
| if (!segment.equals(message)) |
| throw new RuntimeException("Test failed"); |
| } |
| r.close(); |
| fis.close(); |
| } |
| } |
| |
| class ExtendedFileInputStream extends java.io.FileInputStream { |
| ExtendedFileInputStream(File file) throws FileNotFoundException { |
| super(file); |
| } |
| } |
| |
| class ExtendedFileOutputStream extends java.io.FileOutputStream { |
| ExtendedFileOutputStream(File file) throws FileNotFoundException { |
| super(file); |
| } |
| } |
