/*
    * 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.any23.extractor.html;
  
  import java.io.FileNotFoundException;
  import java.io.IOException;
  
  import org.apache.any23.AbstractAny23TestBase;
  import org.junit.Assert;
  import org.junit.Test;
  
  /**
   * Test class to ensure behaviors of {@link HTMLDocument} parser with encoding corner cases.
   */
  public class EncodingTest extends AbstractAny23TestBase {
  
      private final static String HELLO_WORLD = "Hell\u00F6 W\u00F6rld!";
  
      @Test
      public void testEncodingHTML_ISO_8859_1() throws Exception {
          HTMLDocument document = parseHTML("/microformats/xfn/encoding-iso-8859-1.html");
          Assert.assertEquals(HELLO_WORLD, document.find("//TITLE"));
      }
  
      @Test
      public void testEncodingHTML_UTF_8() throws Exception {
          HTMLDocument document = parseHTML("/microformats/xfn/encoding-utf-8.html");
          Assert.assertEquals(HELLO_WORLD, document.find("//TITLE"));
      }
  
      /**
       * Known issue: NekoHTML does not auto-detect the encoding, but relies on the explicitly specified encoding (via XML
       * declaration or HTTP-Equiv meta header). If the meta header comes *after* the title element, then NekoHTML will
       * not use the declared encoding for the title.
       *
       * For this test we expect to not recognize the title.
       * 
       * @throws Exception
       *             if there is an error asserting the test data.
       */
      @Test
      public void testEncodingHTML_UTF_8_DeclarationAfterTitle() throws Exception {
          HTMLDocument document = parseHTML("/microformats/xfn/encoding-utf-8-after-title.html");
          Assert.assertNotSame(HELLO_WORLD, document.find("//TITLE"));
      }
  
      @Test
      public void testEncodingXHTML_ISO_8859_1() throws Exception {
          HTMLDocument document = parseHTML("/microformats/xfn/encoding-iso-8859-1.xhtml");
          Assert.assertEquals(HELLO_WORLD, document.find("//TITLE"));
      }
  
      @Test
      public void testEncodingXHTML_UTF_8() throws Exception {
          HTMLDocument document = parseHTML("/microformats/xfn/encoding-utf-8.xhtml");
          Assert.assertEquals(HELLO_WORLD, document.find("//TITLE"));
      }
  
      private HTMLDocument parseHTML(String filename) throws FileNotFoundException, IOException {
          return new HTMLFixture(copyResourceToTempFile(filename)).getHTMLDocument();
      }
  }