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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
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* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
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/*
* @ test
* @ bug 7087549
* @ summary Test custom options with newInputStream .
* @ author Brandon Passanisi
* @ library . .
* @ build CustomOptions PassThroughFileSystem
* @ run main CustomOptions
*/
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.nio.file.*;
import java.nio.file.attribute.FileAttribute;
import java.nio.file.spi.FileSystemProvider;
import java.nio.channels.SeekableByteChannel;
import java.util.Collections;
import java.util.Set;
import java.util.Map;
public class CustomOptions {
// Create a custom option
static enum CustomOption implements OpenOption {
IGNORE,
}
// number of times that IGNORE option is observed
static int ignoreCount;
// A pass through provider that supports a custom open option
static class MyCustomProvider extends PassThroughFileSystem.PassThroughProvider {
public MyCustomProvider() { }
@Override
public SeekableByteChannel newByteChannel(Path path,
Set<? extends OpenOption> options,
FileAttribute<?>... attrs)
throws IOException
{
if (options.contains(CustomOption.IGNORE)) {
ignoreCount++;
options.remove(CustomOption.IGNORE);
}
return super .newByteChannel(path, options, attrs);
}
}
public static void main(String[] args) throws Exception {
FileSystemProvider provider = new MyCustomProvider();
Map<String,?> env = Collections.emptyMap();
URI uri = URI.create("pass:///");
FileSystem fs = provider.newFileSystem(uri, env);
// Create temp dir for testing
Path dir = TestUtil.createTemporaryDirectory();
try {
// Create temp file for testing
Path path = fs.getPath(dir.resolve("foo" ).toString());
Files.createFile(path);
// Test custom option
Files.newInputStream(path, CustomOption.IGNORE).close();
if (ignoreCount != 1 )
throw new RuntimeException("IGNORE option not passed through" );
// Test null option
try {
Files.newInputStream(path, new OpenOption[] { null }).close();
throw new RuntimeException("NullPointerException expected" );
} catch (NullPointerException ignore) { }
// Test unsupported options
try {
Files.newInputStream(path, StandardOpenOption.WRITE).close();
throw new RuntimeException("UnsupportedOperationException expected" );
} catch (UnsupportedOperationException uoe) { }
try {
Files.newInputStream(path, StandardOpenOption.APPEND).close();
throw new RuntimeException("UnsupportedOperationException expected" );
} catch (UnsupportedOperationException uoe) { }
} finally {
// Cleanup
TestUtil.removeAll(dir);
}
}
}
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¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-10-11)
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