1 /*
   2  * Copyright (c) 2016, 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 java.io.IOException;
  25 import java.io.UncheckedIOException;
  26 import java.net.URL;
  27 import java.util.Collections;
  28 import java.util.Enumeration;
  29 import java.util.List;
  30 import java.util.stream.Collectors;
  31 import java.util.stream.Stream;
  32 
  33 /*
  34  * @test
  35  * @summary Test java.lang.ClassLoader.resources() method
  36  *
  37  * @build ResourcesSuccessCase
  38  * @run main ResourcesSuccessCase
  39  */
  40 public class ResourcesSuccessCase {
  41 
  42     public static void main(String[] args) throws Exception {
  43         ClassLoader cl = new SuccessClassLoader();
  44         // should create the stream pipe 
  45         Stream<URL> stream = cl.resources("the name");
  46         List<URL> resources = stream.collect(Collectors.toList());
  47 
  48         if (resources == null || resources.size() != 1) {
  49             throw new Exception("expected resource is null or empty");
  50         }
  51 
  52         URL url = resources.get(0);
  53 
  54         if (!"file:/somefile".equals(url.toExternalForm())) {
  55             throw new Exception("wrong url: " + url);
  56         }
  57     }
  58 
  59     public static class SuccessClassLoader extends ClassLoader {
  60         @Override
  61         public Enumeration<URL> getResources(String name) throws IOException {
  62             URL url = new URL("file:/somefile");
  63             return Collections.enumeration(Collections.singleton(url));
  64         }
  65     }
  66 }