/*
    * 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.util;
  
  import java.io.File;
  import java.io.IOException;
  import java.nio.charset.Charset;
  import java.nio.charset.StandardCharsets;
  import java.util.Properties;
  
  import org.apache.commons.lang3.SystemUtils;
  import org.apache.commons.vfs2.FileSystemException;
  import org.apache.commons.vfs2.VFS;
  import org.junit.Assert;
  import org.junit.Test;
  
  /**
   * Tests {@link FileObjectUtils}.
   *
   * @since 2.4
   */
  public class FileObjectUtilsTest {
  
      private void assertProperties(final Properties p) {
          Assert.assertNotNull(p);
          Assert.assertEquals("1", p.getProperty("one"));
          Assert.assertEquals("2", p.getProperty("two"));
      }
  
      @Test
      public void testExistsNotNull() throws FileSystemException {
          Assert.assertTrue(FileObjectUtils.exists(VFS.getManager().toFileObject(SystemUtils.getJavaIoTmpDir())));
      }
  
      @Test
      public void testgetContentAsString_Charset() throws FileSystemException, IOException {
          Assert.assertEquals("This is a test file.",
              FileObjectUtils.getContentAsString(
                  VFS.getManager().toFileObject(new File("src/test/resources/test-data/read-tests/file1.txt")),
                  StandardCharsets.UTF_8));
      }
  
      @Test
      public void testgetContentAsString_CharsetNull() throws FileSystemException, IOException {
          Assert.assertEquals("This is a test file.",
              FileObjectUtils.getContentAsString(
                  VFS.getManager().toFileObject(new File("src/test/resources/test-data/read-tests/file1.txt")),
                  (Charset) null));
      }
  
      @Test
      public void testgetContentAsString_String() throws FileSystemException, IOException {
          Assert.assertEquals("This is a test file.", FileObjectUtils.getContentAsString(
              VFS.getManager().toFileObject(new File("src/test/resources/test-data/read-tests/file1.txt")), "UTF-8"));
      }
  
      @Test
      public void testgetContentAsString_StringNull() throws FileSystemException, IOException {
          Assert.assertEquals("This is a test file.",
              FileObjectUtils.getContentAsString(
                  VFS.getManager().toFileObject(new File("src/test/resources/test-data/read-tests/file1.txt")),
                  (String) null));
      }
  
      @Test
      public void testNotExistsNotNull() throws FileSystemException {
          Assert.assertFalse(
              FileObjectUtils.exists(VFS.getManager().toFileObject(new File("This file can't possibly exist, right?"))));
      }
  
      @Test
      public void testNotExistsNull() throws FileSystemException {
          Assert.assertFalse(FileObjectUtils.exists(null));
      }
  
      @Test
      public void testReadProperties() throws FileSystemException, IOException {
          assertProperties(FileObjectUtils
              .readProperties(VFS.getManager().toFileObject(new File("src/test/resources/test.properties"))));
      }
  
      @Test
      public void testReadPropertiesInto() throws FileSystemException, IOException {
          final Properties p = new Properties();
         p.setProperty("extraKey", "extraValue");
         assertProperties(FileObjectUtils
             .readProperties(VFS.getManager().toFileObject(new File("src/test/resources/test.properties")), p));
         Assert.assertEquals("extraValue", p.getProperty("extraKey"));
     }
 }