/**
    * 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.commons.cli2.bug;
  
  import java.io.File;
  
  import junit.framework.TestCase;
  
  import org.apache.commons.cli2.CommandLine;
  import org.apache.commons.cli2.Group;
  import org.apache.commons.cli2.builder.ArgumentBuilder;
  import org.apache.commons.cli2.builder.DefaultOptionBuilder;
  import org.apache.commons.cli2.builder.GroupBuilder;
  import org.apache.commons.cli2.commandline.Parser;
  import org.apache.commons.cli2.option.DefaultOption;
  import org.apache.commons.cli2.validation.FileValidator;
  
  /**
   * Test case for http://issues.apache.org/jira/browse/CLI-144.
   *
   * CLI 2 throws
   *
   * <pre>
   * Exception in thread &quot;main&quot; java.lang.ClassCastException: java.io.File cannot be cast to java.lang.String
   * </pre>
   *
   * when there should be no such exception
   *
   * @author David Biesack
   */
  public class BugCLI144Test extends TestCase {
  	public void testFileValidator() {
  		final DefaultOptionBuilder obuilder = new DefaultOptionBuilder();
          final ArgumentBuilder abuilder = new ArgumentBuilder();
          final GroupBuilder gbuilder = new GroupBuilder();
          DefaultOption fileNameOption = obuilder.withShortName("f")
                  .withLongName("file-name").withRequired(true).withDescription(
                          "name of an existing file").withArgument(
                          abuilder.withName("file-name").withValidator(
                                  FileValidator.getExistingFileInstance())
                                  .create()).create();
          Group options = gbuilder.withName("options").withOption(fileNameOption)
                  .create();
          Parser parser = new Parser();
          parser.setHelpTrigger("--help");
          parser.setGroup(options);
  
          final String fileName = "src/test/org/apache/commons/cli2/bug/BugCLI144Test.java";
          CommandLine cl = parser
                  .parseAndHelp(new String[] { "--file-name", fileName });
          assertNotNull(cl);
          assertEquals("Wrong file", new File(fileName), cl.getValue(fileNameOption));
  	}
  }