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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
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* under the terms of the GNU General Public License version 2 only , as
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*
* 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 ) .
*
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* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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*/
/*
* @ test
* @ bug 5041655
* @ summary Verify FileLock . overlaps
* @ run testng Overlaps
*/
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.channels.FileLock;
import java.nio.file.Files;
import java.nio.file.Path;
import static java.lang.Boolean .*;
import static java.nio.file.StandardOpenOption.*;
import static org.testng.Assert .assertEquals;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
public class Overlaps {
private static final long POS = 27 ;
private static final long SIZE = 42 ;
private static FileChannel fc;
@BeforeClass
public void before() throws IOException {
Path path = Files.createTempFile(Path.of("." ), "foo" , ".bar" );
fc = FileChannel.open(path, CREATE, WRITE, DELETE_ON_CLOSE);
fc.position(POS);
fc.write(ByteBuffer.wrap(new byte [(int )SIZE]));
}
@AfterClass
public void after() throws IOException {
fc.close();
}
@DataProvider
public Object[][] ranges() {
return new Object[][] {
{POS, SIZE, -1 ,-1 , FALSE },
{POS, SIZE, 0 , -1 , FALSE },
{POS, SIZE, POS - 1 , -1 , FALSE },
{POS, SIZE, POS + SIZE/2 , -1 , FALSE },
{POS, SIZE, POS + SIZE, -1 , FALSE },
{POS, SIZE, -1 , POS, FALSE },
{POS, SIZE, -1 , POS + SIZE/2 , TRUE },
{POS, SIZE, POS - 2 , 1 , FALSE },
{POS, SIZE, POS + 1 , 1 , TRUE },
{POS, SIZE, POS + SIZE/2 , 0 , TRUE },
{POS, SIZE, Long .MAX_VALUE, 2 , FALSE },
{POS, SIZE, POS + SIZE / 2 , Long .MAX_VALUE, TRUE },
{POS, SIZE, 0 , 0 , TRUE },
{Long .MAX_VALUE - SIZE/2 , 0 , 0 , SIZE, FALSE },
{Long .MAX_VALUE - SIZE/2 , 0 , Long .MAX_VALUE - SIZE/4 , SIZE, TRUE },
{Long .MAX_VALUE - SIZE/2 , 0 , Long .MAX_VALUE - SIZE, 0 , TRUE },
{Long .MAX_VALUE - SIZE, 0 , Long .MAX_VALUE - SIZE/2 , 0 , TRUE }
};
}
@Test(dataProvider = "ranges" )
public void overlaps(long lockPos, long lockSize, long pos, long size,
boolean overlaps) throws IOException {
try (FileLock lock = fc.lock(lockPos, lockSize, false )) {
assertEquals(lock.overlaps(pos, size), overlaps);
}
}
}
Messung V0.5 in Prozent C=94 H=89 G=91
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-11)
¤
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