/*
    * 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.provider.test;
  
  import org.apache.commons.vfs2.FileObject;
  import org.apache.commons.vfs2.FileSystem;
  import org.apache.commons.vfs2.FileSystemManager;
  import org.apache.commons.vfs2.FilesCache;
  import org.apache.commons.vfs2.ProviderTestConfig;
  import org.apache.commons.vfs2.impl.DefaultFileSystemManager;
  
  /**
   * A provider config that wraps another provider, to run the tests via junctions.
   */
  public class JunctionProviderConfig implements ProviderTestConfig {
  
      private final ProviderTestConfig config;
  
      public JunctionProviderConfig(final ProviderTestConfig config) {
          this.config = config;
      }
  
      /**
       * Returns the base folder for tests.
       */
      @Override
      public FileObject getBaseTestFolder(final FileSystemManager manager) throws Exception {
          final FileObject baseFolder = config.getBaseTestFolder(manager);
  
          // Create an empty file system, then link in the base folder
          final FileSystem newFs = manager.createVirtualFileSystem("vfs:").getFileSystem();
          final String junctionPoint = "/some/dir";
          newFs.addJunction(junctionPoint, baseFolder);
  
          return newFs.resolveFile(junctionPoint);
      }
  
      /**
       * Returns a DefaultFileSystemManager instance (or subclass instance).
       */
      @Override
      public DefaultFileSystemManager getDefaultFileSystemManager() {
          return config.getDefaultFileSystemManager();
      }
  
      @Override
      public FilesCache getFilesCache() {
          return config.getFilesCache();
      }
  
      @Override
      public boolean isFileSystemRootAccessible() {
          return true;
      }
  
      /**
       * Prepares the file system manager.
       */
      @Override
      public void prepare(final DefaultFileSystemManager manager) throws Exception {
          config.prepare(manager);
      }
  
  }