| /* |
| * 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 |
| } |
| } |