1 /*

     2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 import jdk.test.lib.util.FileUtils;

    25 import org.testng.annotations.Test;

    26 

    27 import java.io.FileNotFoundException;

    28 import java.io.IOException;

    29 import java.net.http.HttpRequest.BodyPublisher;

    30 import java.net.http.HttpRequest.BodyPublishers;

    31 import java.nio.ByteBuffer;

    32 import java.nio.file.Files;

    33 import java.nio.file.Path;

    34 import java.util.ArrayList;

    35 import java.util.List;

    36 import java.util.concurrent.CompletableFuture;

    37 import java.util.concurrent.Flow;

    38 

    39 import static org.testng.Assert.assertEquals;

    40 

    41 /*

    42  * @test

    43  * @summary Verifies that some of the standard BodyPublishers relay exception

    44  *          rather than throw it

    45  * @bug 8226303

    46  * @library /test/lib

    47  * @run testng/othervm RelayingPublishers

    48  */

    49 public class RelayingPublishers {

    50 

    51     @Test

    52     public void ofFile0() throws IOException {

    53         Path directory = Files.createDirectory(Path.of("d"));

    54         // Even though the path exists, the publisher should not be able

    55         // to read from it, as that path denotes a directory, not a file

    56         BodyPublisher pub = BodyPublishers.ofFile(directory);

    57         CompletableSubscriber<ByteBuffer> s = new CompletableSubscriber<>();

    58         pub.subscribe(s);

    59         s.future().join();

    60         // Interestingly enough, it's FileNotFoundException if a file

    61         // is a directory

    62         assertEquals(s.future().join().getClass(), FileNotFoundException.class);

    63     }

    64 

    65     @Test

    66     public void ofFile1() throws IOException {

    67         Path file = Files.createFile(Path.of("f"));

    68         BodyPublisher pub = BodyPublishers.ofFile(file);

    69         FileUtils.deleteFileWithRetry(file);

    70         CompletableSubscriber<ByteBuffer> s = new CompletableSubscriber<>();

    71         pub.subscribe(s);

    72         assertEquals(s.future().join().getClass(), FileNotFoundException.class);

    73     }

    74 

    75     @Test

    76     public void ofByteArrays() {

    77         List<byte[]> bytes = new ArrayList<>();

    78         bytes.add(null);

    79         BodyPublisher pub = BodyPublishers.ofByteArrays(bytes);

    80         CompletableSubscriber<ByteBuffer> s = new CompletableSubscriber<>();

    81         pub.subscribe(s);

    82         assertEquals(s.future().join().getClass(), NullPointerException.class);

    83     }

    84 

    85     static class CompletableSubscriber<T> implements Flow.Subscriber<T> {

    86 

    87         final CompletableFuture<Throwable> f = new CompletableFuture<>();

    88 

    89         @Override

    90         public void onSubscribe(Flow.Subscription subscription) {

    91             subscription.request(1);

    92         }

    93 

    94         @Override

    95         public void onNext(T item) {

    96             f.completeExceptionally(new RuntimeException("Unexpected onNext"));

    97         }

    98 

    99         @Override

   100         public void onError(Throwable throwable) {

   101             f.complete(throwable);

   102         }

   103 

   104         @Override

   105         public void onComplete() {

   106             f.completeExceptionally(new RuntimeException("Unexpected onNext"));

   107         }

   108 

   109         CompletableFuture<Throwable> future() {

   110             return f.copy();

   111         }

   112     }

   113 }