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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.apache.commons.lang3;
19  
20  import static org.junit.jupiter.api.Assertions.assertEquals;
21  import static org.junit.jupiter.api.Assertions.assertNotNull;
22  
23  import java.io.IOException;
24  import java.net.URL;
25  import java.net.URLClassLoader;
26  
27  import org.junit.jupiter.api.Assertions;
28  import org.junit.jupiter.api.Test;
29  
30  /**
31   * Tests {@link ClassLoaderUtils}.
32   */
33  public class ClassLoaderUtilsTest extends AbstractLangTest {
34  
35      @Test
36      public void testGetSystemURLs() {
37          // TODO How to better test considering this test may be called from an IDE and Maven?
38          assertNotNull(ClassLoaderUtils.getSystemURLs());
39      }
40  
41      @Test
42      public void testGetThreadURLs() {
43          // TODO How to better test considering this test may be called from an IDE and Maven?
44          assertNotNull(ClassLoaderUtils.getThreadURLs());
45      }
46  
47      @Test
48      public void testToString_ClassLoader() throws IOException {
49          final URL url = new URL("http://localhost");
50          try (URLClassLoader urlClassLoader = new URLClassLoader(new URL[] { url })) {
51              @SuppressWarnings("resource")
52              final ClassLoader classLoader = urlClassLoader;
53              Assertions.assertEquals(String.format("%s[%s]", classLoader, url), ClassLoaderUtils.toString(classLoader));
54          }
55          assertEquals("null", ClassLoaderUtils.toString((ClassLoader) null));
56      }
57  
58      @Test
59      public void testToString_URLClassLoader() throws IOException {
60          final URL url = new URL("http://localhost");
61          try (URLClassLoader urlClassLoader = new URLClassLoader(new URL[] { url })) {
62              Assertions.assertEquals(String.format("%s[%s]", urlClassLoader, url), ClassLoaderUtils.toString(urlClassLoader));
63          }
64          assertEquals("null", ClassLoaderUtils.toString((URLClassLoader) null));
65      }
66  }