code: /* LanguageTool, a natural language style checker
   * Copyright (C) 2012 Daniel Naber (http://www.danielnaber.de)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
   * USA
   */
  package org.languagetool.tools;
  
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  
  public class ContextToolsTest {
  
    @Test
    public void testGetContext() throws Exception {
      ContextTools contextTools = new ContextTools();
      String context = contextTools.getContext(4, 8, "Hi, this is some nice text waiting for its error markers.");
      assertEquals("Hi, <b><font bgcolor=\"#ff8b8b\">this</font></b> is some nice text waiting for its error...", context);
      String context2 = contextTools.getContext(3, 5, "xxx\n \nyyy");
      assertEquals("xxx<b><font bgcolor=\"#ff8b8b\">&nbsp;&nbsp;</font></b> yyy", context2);
    }
  
    @Test
    public void testPlainTextContext() throws Exception {
      ContextTools contextTools = new ContextTools();
      contextTools.setContextSize(5);
      String input = "This is a test sentence. Here's another sentence with more text.";
      String result = contextTools.getPlainTextContext(8, 14, input);
      assertEquals("...s is a test sent...\n        ^^^^^^     ", result);
    }
  
    @Test
    public void testPlainTextContextWithLineBreaks() throws Exception {
      ContextTools contextTools = new ContextTools();
      contextTools.setContextSize(5);
      String input = "One.\nThis is a test sentence.\nHere's another sentence.";
      String result = contextTools.getPlainTextContext(15, 19, input);
      assertEquals("...is a test sent...\n        ^^^^     ", result);
    }
  
    @Test
    public void testPlainTextContextWithDosLineBreaks() throws Exception {
      ContextTools contextTools = new ContextTools();
      contextTools.setContextSize(5);
      String input = "One.\r\nThis is a test sentence.\r\nHere's another sentence.";
      String result = contextTools.getPlainTextContext(16, 20, input);
      assertEquals("...is a test sent...\n        ^^^^     ", result);
    }
  
    @Test
    public void testLargerContext() throws Exception {
      ContextTools contextTools = new ContextTools();
      contextTools.setContextSize(100);
      String context = contextTools.getContext(4, 8, "Hi, this is some nice text waiting for its error markers.");
      assertEquals("Hi, <b><font bgcolor=\"#ff8b8b\">this</font></b> is some nice text waiting for its error markers.", context);
    }
  
    @Test
    public void testHtmlEscape() throws Exception {
      ContextTools contextTools = new ContextTools();
      String context1 = contextTools.getContext(0, 2, "Hi, this is <html>.");
      assertEquals("<b><font bgcolor=\"#ff8b8b\">Hi</font></b>, this is &lt;html&gt;.", context1);
  
      contextTools.setEscapeHtml(false);
      String context2 = contextTools.getContext(0, 2, "Hi, this is <html>.");
      assertEquals("<b><font bgcolor=\"#ff8b8b\">Hi</font></b>, this is <html>.", context2);
    }
  
    @Test
    public void testMarkers() throws Exception {
      ContextTools contextTools = new ContextTools();
      contextTools.setErrorMarker("<X>", "</X>");
      String context = contextTools.getContext(0, 2, "Hi, this is it.");
      assertEquals("<X>Hi</X>, this is it.", context);
    }
  
  }
  