/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.commons.vfs2;
  
  import java.io.IOException;
  import java.net.URL;
  import java.net.URLConnection;
  
  import org.junit.Test;
  
  /**
   * URL test cases for providers.
   */
  public class UrlTests extends AbstractProviderTestCase {
  
      /**
       * Returns the capabilities required by the tests of this test case. The tests are not run if the provider being
       * tested does not support all the required capabilities. Return null or an empty array to always run the tests.
       */
      @Override
      protected Capability[] getRequiredCapabilities() {
          return new Capability[] {Capability.URI};
      }
  
      @Test
      public void testReservedCharacter_Space() throws FileSystemException {
          try (final FileObject fileObject = getReadFolder().resolveFile("file with spaces.txt")) {
              final URL url = fileObject.getURL();
              final String string = url.toString();
              assertTrue(string, string.contains("file%20with%20spaces.txt"));
          }
          try (final FileObject fileObject = getReadFolder().resolveFile("file%20with%20spaces.txt")) {
              final URL url = fileObject.getURL();
              final String string = url.toString();
              assertTrue(string, string.contains("file%20with%20spaces.txt"));
          }
      }
  
      /**
       * Tests that unknown files have no content.
       */
      @Test
      public void testUnknownURL() throws Exception {
          // Try getting the content of an unknown file
          final FileObject unknownFile = getReadFolder().resolveFile("unknown-file");
          assertFalse(unknownFile.exists());
  
          final URLConnection connection = unknownFile.getURL().openConnection();
          try {
              connection.getInputStream();
              fail();
          } catch (final IOException e) {
              assertSameMessage("vfs.provider/read-not-file.error", unknownFile, e);
          }
          assertEquals(-1, connection.getContentLength());
      }
  
      /**
       * Tests url.
       */
      @Test
      public void testURL() throws Exception {
          final FileObject file = getReadFolder().resolveFile("some-dir/");
          final URL url = file.getURL();
  
          assertEquals(file.getName().getURI(), url.toExternalForm());
  
          final URL parentURL = new URL(url, "..");
          assertEquals(file.getParent().getURL(), parentURL);
  
          final URL rootURL = new URL(url, "/");
          assertEquals(file.getFileSystem().getRoot().getURL(), rootURL);
      }
  
      /**
       * Tests content.
       */
      @Test
      public void testURLContent() throws Exception {
          testURLContent(getReadFolder());
      }
  
      private void testURLContent(final FileObject readFolder) throws FileSystemException, IOException, Exception {
          // Test non-empty file
          FileObject file = readFolder.resolveFile("file1.txt");
         assertTrue(file.toString(), file.exists());
 
         URLConnection urlCon = file.getURL().openConnection();
         assertSameURLContent(FILE1_CONTENT, urlCon);
 
         // Test empty file
         file = readFolder.resolveFile("empty.txt");
         assertTrue(file.exists());
 
         urlCon = file.getURL().openConnection();
         assertSameURLContent("", urlCon);
     }
 
     /**
      * Tests content.
      */
     @Test
     public void testURLContentProvider() throws Exception {
         // Test non-empty file
         final FileObject file = getReadFolder().resolveFile("file1.txt");
         assertTrue(file.exists());
 
         final String uri = file.getURL().toExternalForm();
         final FileSystemOptions options = getReadFolder().getFileSystem().getFileSystemOptions();
 
         final FileObject f1 = getManager().resolveFile(uri, options);
         final FileObject f2 = getManager().resolveFile(uri, options);
 
         assertEquals("Two files resolved by URI must be equals on " + uri, f1, f2);
         assertSame("Resolving two times should not produce new filesystem on " + uri, f1.getFileSystem(),
             f2.getFileSystem());
     }
 
 }