package org.djutils.cli;
   
   import static org.junit.Assert.assertEquals;
   import static org.junit.Assert.fail;
   
   import org.junit.Test;
   
   import picocli.CommandLine;
   import picocli.CommandLine.Command;
  import picocli.CommandLine.Option;
  
  /**
   * Program to test the CLI. <br>
   * <br>
   * Copyright (c) 2003-2018 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See
   * for project information <a href="https://www.simulation.tudelft.nl/" target="_blank">www.simulation.tudelft.nl</a>. The
   * source code and binary code of this software is proprietary information of Delft University of Technology.
   * @author <a href="https://www.tudelft.nl/averbraeck" target="_blank">Alexander Verbraeck</a>
   */
  public class TestCLICommandLine
  {
      /** */
      @Command(description = "Test program for CLI", name = "Program", mixinStandardHelpOptions = true, version = "1.0")
      public static class Options implements Checkable
      {
          /** */
          @Option(names = {"-p", "--port"}, description = "Internet port to use", defaultValue = "80")
          private int port;
  
          /** @return the port number */
          public int getPort()
          {
              return this.port;
          }
  
          /** {@inheritDoc} */
          @Override
          public void check() throws Exception
          {
              if (this.port <= 0 || this.port > 65535)
              {
                  throw new Exception("Port should be between 1 and 65535");
              }
          }
      }
  
      /**
       * Test the CliUtil methods.
       * @throws CliException on error
       * @throws IllegalAccessException on error
       * @throws IllegalArgumentException on error
       * @throws NoSuchFieldException on error
       */
      @Test
      public void testCli() throws NoSuchFieldException, IllegalArgumentException, IllegalAccessException, CliException
      {
          // prevent exit to really exit
          System.setSecurityManager(new ExitHelper.NoExitSecurityManager());
  
          // test CliUtil with CommandLine
          String[] args = new String[] {"-p", "2400"};
          Options options = new Options();
          CommandLine cmd = new CommandLine(options);
          CliUtil.execute(cmd, args);
          assertEquals(2400, options.getPort());
          assertEquals("1.0", options.getClass().getAnnotation(Command.class).version()[0]);
          assertEquals("Program", options.getClass().getAnnotation(Command.class).name());
          assertEquals("Test program for CLI", options.getClass().getAnnotation(Command.class).description()[0]);
  
          // test CliUtil with CommandLine and check() method
          args = new String[] {"-p", "240000"};
          options = new Options();
          cmd = new CommandLine(options);
          try
          {
              CliUtil.execute(cmd, args);
              fail("check() is not called: the program should exit with an error message when a wrong port is provided");
          }
          catch (ExitHelper.ExitException e)
          {
              // ok!
          }
  
          System.setSecurityManager(null);
      }
  }