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import jdk.test.lib.util.FileUtils;
import org.testng.annotations.Test;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.http.HttpRequest.BodyPublisher;
import java.net.http.HttpRequest.BodyPublishers;
import java.nio.ByteBuffer;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Flow;
import static org.testng.Assert .assertEquals;
/*
* @ test
* @ summary Verifies that some of the standard BodyPublishers relay exception
* rather than throw it
* @ bug 8226303
* @ library / test / lib
* @ run testng / othervm RelayingPublishers
*/
public class RelayingPublishers {
@Test
public void ofFile0() throws IOException {
Path directory = Files.createDirectory(Path.of("d" ));
// Even though the path exists, the publisher should not be able
// to read from it, as that path denotes a directory, not a file
BodyPublisher pub = BodyPublishers.ofFile(directory);
CompletableSubscriber<ByteBuffer> s = new CompletableSubscriber<>();
pub.subscribe(s);
s.future().join();
// Interestingly enough, it's FileNotFoundException if a file
// is a directory
assertEquals(s.future().join().getClass(), FileNotFoundException.class );
}
@Test
public void ofFile1() throws IOException {
Path file = Files.createFile(Path.of("f" ));
BodyPublisher pub = BodyPublishers.ofFile(file);
FileUtils.deleteFileWithRetry(file);
CompletableSubscriber<ByteBuffer> s = new CompletableSubscriber<>();
pub.subscribe(s);
assertEquals(s.future().join().getClass(), FileNotFoundException.class );
}
@Test
public void ofByteArrays() {
List<byte []> bytes = new ArrayList<>();
bytes.add(null );
BodyPublisher pub = BodyPublishers.ofByteArrays(bytes);
CompletableSubscriber<ByteBuffer> s = new CompletableSubscriber<>();
pub.subscribe(s);
assertEquals(s.future().join().getClass(), NullPointerException.class );
}
static class CompletableSubscriber<T> implements Flow.Subscriber<T> {
final CompletableFuture<Throwable> f = new CompletableFuture<>();
@Override
public void onSubscribe(Flow.Subscription subscription) {
subscription.request(1 );
}
@Override
public void onNext(T item) {
f.completeExceptionally(new RuntimeException("Unexpected onNext" ));
}
@Override
public void onError(Throwable throwable) {
f.complete(throwable);
}
@Override
public void onComplete() {
f.completeExceptionally(new RuntimeException("Unexpected onNext" ));
}
CompletableFuture<Throwable> future() {
return f.copy();
}
}
}
Messung V0.5 in Prozent C=95 H=93 G=93
¤ Dauer der Verarbeitung: 0.13 Sekunden
(vorverarbeitet am 2026-10-11)
¤
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