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/*
* Copyright (c) 2015, 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.File;
import java.io.IOException;
import java.nio.channels.AsynchronousFileChannel;
import java.nio.channels.FileChannel;
import java.nio.channels.FileLock;
import java.nio.file.StandardOpenOption;
/*
* @test
* @bug 6880737
* @summary Test FileLock constructor parameter validation.
*/
public class FileLockConstructor {
public static void main(String[] args) throws IOException {
FileLock fileLock = null;
int failures = 0;
// null FileChannel
boolean exceptionThrown = false;
try {
fileLock = new FileLockSub((FileChannel)null, 0, 0, false);
} catch (NullPointerException npe) {
exceptionThrown = true;
}
if (!exceptionThrown) {
System.err.println("FileLock constructor did not throw NPE for null FileChannel");
failures++;
}
// null AsynchronousFileChannel
exceptionThrown = false;
try {
fileLock = new FileLockSub((AsynchronousFileChannel)null, 0, 0, true);
} catch (NullPointerException npe) {
exceptionThrown = true;
}
if (!exceptionThrown) {
System.err.println("FileLock constructor did not throw NPE for null AsynchronousFileChannel");
failures++;
}
// create temporary file
File tmpFile = File.createTempFile("FileLock", "tmp");
tmpFile.deleteOnExit();
// position and size preconditions
long[][] posAndSize = new long[][] {
{0, 42}, // valid
{-1, 42}, // invalid: position < 0
{0, -1}, // invalid: size < 0
{Long.MAX_VALUE, 1} // invalid: position + size < 0
};
// test position and size preconditions for FileChannel case
try (FileChannel syncChannel = FileChannel.open(tmpFile.toPath(),
StandardOpenOption.READ, StandardOpenOption.WRITE)) {
for (int i = 0; i < posAndSize.length; i++) {
boolean preconditionsHold = i == 0;
exceptionThrown = false;
try {
fileLock = new FileLockSub(syncChannel, posAndSize[i][0],
posAndSize[i][1], true);
} catch (IllegalArgumentException iae) {
exceptionThrown = true;
} catch (Exception e) {
System.err.println("Unexpected exception \"" + e + "\" caught"
+ " for position " + posAndSize[i][0] + " and size "
+ posAndSize[i][1] + " for FileChannel variant");
failures++;
continue;
}
if (preconditionsHold && exceptionThrown) {
System.err.println("FileLock constructor incorrectly threw IAE"
+ " for position " + posAndSize[i][0] + " and size "
+ posAndSize[i][1] + " for FileChannel variant");
failures++;
} else if (!preconditionsHold && !exceptionThrown) {
System.err.println("FileLock constructor did not throw IAE"
+ " for position " + posAndSize[i][0] + " and size "
+ posAndSize[i][1] + " for FileChannel variant");
failures++;
}
}
}
// test position and size preconditions for AsynchronousFileChannel case
try (AsynchronousFileChannel asyncChannel
= AsynchronousFileChannel.open(tmpFile.toPath(),
StandardOpenOption.READ, StandardOpenOption.WRITE)) {
for (int i = 0; i < posAndSize.length; i++) {
boolean preconditionsHold = i == 0;
exceptionThrown = false;
try {
fileLock = new FileLockSub(asyncChannel, posAndSize[i][0],
posAndSize[i][1], true);
} catch (IllegalArgumentException iae) {
exceptionThrown = true;
} catch (Exception e) {
System.err.println("Unexpected exception \"" + e + "\" caught"
+ " for position " + posAndSize[i][0] + " and size "
+ posAndSize[i][1] + " for AsynchronousFileChannel variant");
failures++;
continue;
}
if (preconditionsHold && exceptionThrown) {
System.err.println("FileLock constructor incorrectly threw IAE"
+ " for position " + posAndSize[i][0] + " and size "
+ posAndSize[i][1] + " for AsynchronousFileChannel variant");
failures++;
} else if (!preconditionsHold && !exceptionThrown) {
System.err.println("FileLock constructor did not throw IAE"
+ " for position " + posAndSize[i][0] + " and size "
+ posAndSize[i][1] + " for AsynchronousFileChannel variant");
failures++;
}
}
}
if (failures > 0) {
throw new RuntimeException("Incurred " + failures +
" failures while testing FileLock.");
}
}
}
class FileLockSub extends FileLock {
FileLockSub(FileChannel channel, long position, long size, boolean shared) {
super(channel, position, size, shared);
}
FileLockSub(AsynchronousFileChannel channel, long position, long size,
boolean shared) {
super(channel, position, size, shared);
}
@Override
public boolean isValid() {
return false;
}
@Override
public void release() throws IOException {
// do nothing
}
}
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