/*
    * 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.mime.purifier;
  
  import org.apache.tika.io.IOUtils;
  import org.junit.After;
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.Test;
  
  import java.io.*;
  
  /**
   * Reference test case for {@link WhiteSpacesPurifier}.
   *
   * @author Davide Palmisano ( dpalmisano@gmail.com )
   */
  public class WhiteSpacesPurifierTest {
  
      private Purifier purifier;
  
      @Before
      public void setUp() {
          this.purifier = new WhiteSpacesPurifier();
      }
  
      @After
      public void tearDown() {
          this.purifier = null;
      }
  
      @Test
      public void testPurification() throws IOException {
          InputStream inputStream = new BufferedInputStream(
                  this.getClass().getResourceAsStream("/application/xhtml/blank-file-header.xhtml"));
          this.purifier.purify(inputStream);
          Assert.assertNotNull(inputStream);
          Assert.assertTrue(validatePurification(IOUtils.toString(inputStream)));
  
      }
  
      /**
       * Checks if a {@link String} starts with a propert character.
       * 
       * @param string
       * 
       * @return
       */
      private boolean validatePurification(String string) {
          char firstChar = string.charAt(0);
          return (firstChar != '\t') && (firstChar != '\n') && (firstChar != ' ');
      }
  
  }