/*
    * 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 static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import org.junit.jupiter.api.AfterAll;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link FileObject}s with iterators its implementation the {@link Iterable} interface to allow a FileObject to
   * be the target of the Java 5 "foreach" statement.
   */
  public class FileIteratorTest {
  
      private static FileObject baseFolder;
  
      private final static int FILE_COUNT = 14;
  
      /**
       * Creates a RAM FS.
       *
       * @throws Exception
       */
      @BeforeAll
      public static void setUpClass() throws Exception {
          baseFolder = VFS.getManager().resolveFile("ram://" + FileIteratorTest.class.getName());
          baseFolder.deleteAll();
          baseFolder.resolveFile("a.htm").createFile();
          baseFolder.resolveFile("a.html").createFile();
          baseFolder.resolveFile("a.xhtml").createFile();
          baseFolder.resolveFile("b.htm").createFile();
          baseFolder.resolveFile("b.html").createFile();
          baseFolder.resolveFile("b.xhtml").createFile();
          baseFolder.resolveFile("c.htm").createFile();
          baseFolder.resolveFile("c.html").createFile();
          baseFolder.resolveFile("c.xhtml").createFile();
          baseFolder.resolveFile("subdir1").createFolder();
          baseFolder.resolveFile("subdir1/subfile1.txt").createFile();
          baseFolder.resolveFile("subdir2").createFolder();
          baseFolder.resolveFile("subdir2/subfile1.txt").createFile();
      }
  
      /**
       * Deletes RAM FS files.
       *
       * @throws Exception
       */
      @AfterAll
      public static void tearDownClass() throws Exception {
          if (baseFolder != null) {
              baseFolder.deleteAll();
          }
      }
  
      @Test
      public void testIterator() throws FileSystemException {
          final FileObject[] findFiles = baseFolder.findFiles(Selectors.SELECT_ALL);
          assertEquals(FILE_COUNT, findFiles.length);
          final FileObject[] listFiles = baseFolder.getChildren();
          assertTrue(FILE_COUNT > listFiles.length);
          int i = 0;
          for (final FileObject actualFile : baseFolder) {
              final FileObject expectedFile = findFiles[i];
              assertEquals(expectedFile, actualFile);
              i++;
          }
          i = 0;
          for (final FileObject element : baseFolder) {
              final FileObject expectedFile = findFiles[i];
              assertEquals(expectedFile, element);
              i++;
          }
      }
  
  }