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.commandline;
  
  import org.junit.Test;
  
  import static org.junit.Assert.*;
  
  public class CommandLineParserTest {
  
    @Test
    public void testUsage() throws Exception {
      CommandLineParser parser = new CommandLineParser();
      try {
        parser.parseOptions(new String[]{});
        fail();
      } catch (WrongParameterNumberException ignored) {}
  
      CommandLineOptions commandLineOptions = parser.parseOptions(new String[]{"--help"});
      assertTrue(commandLineOptions.isPrintUsage());
    }
  
    @Test
    public void testErrors() throws Exception {
      CommandLineParser parser = new CommandLineParser();
      try {
        parser.parseOptions(new String[]{"--apply", "--taggeronly"});
        fail();
      } catch (IllegalArgumentException ignored) {}
    }
  
    @Test
    public void testSimple() throws Exception {
      CommandLineParser parser = new CommandLineParser();
      CommandLineOptions options;
  
      options = parser.parseOptions(new String[]{"filename.txt"});
      assertNull(options.getLanguage());
      assertEquals("filename.txt", options.getFilename());
      assertFalse(options.isVerbose());
  
      options = parser.parseOptions(new String[]{"--language", "xx", "filename.txt"});
      assertEquals("xx", options.getLanguage().getShortCode());
      assertEquals("filename.txt", options.getFilename());
      assertFalse(options.isVerbose());
  
      options = parser.parseOptions(new String[]{"-l", "xx", "filename.txt"});
      assertEquals("xx", options.getLanguage().getShortCode());
      assertEquals("filename.txt", options.getFilename());
      assertFalse(options.isVerbose());
  
      options = parser.parseOptions(new String[]{"-v", "-l", "xx", "filename.txt"});
      assertEquals("xx", options.getLanguage().getShortCode());
      assertEquals("filename.txt", options.getFilename());
      assertTrue(options.isVerbose());
  
      options = parser.parseOptions(new String[]{"--version"});
      assertTrue(options.isPrintVersion());
  
      options = parser.parseOptions(new String[]{"--list"});
      assertTrue(options.isPrintLanguages());
    }
  
  }
  