package org.apache.maven.surefire.booter;
   
   /*
    * 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.
   */
  
  import java.io.File;
  import java.util.List;
  
  import junit.framework.TestCase;
  
  import static org.apache.maven.surefire.booter.Classpath.emptyClasspath;
  
  /**
   * @author Kristian Rosenvold
   */
  public class ClasspathTest
      extends TestCase
  {
      private static final String DUMMY_PROPERTY_NAME = "dummyProperty";
  
      private static final String DUMMY_URL_1 = "foo.jar";
  
      private static final String DUMMY_URL_2 = "bar.jar";
  
      public void testShouldWriteEmptyPropertyForEmptyClasspath()
      {
          Classpath classpath = Classpath.emptyClasspath();
          classpath.writeToSystemProperty( DUMMY_PROPERTY_NAME );
          assertEquals( "", System.getProperty( DUMMY_PROPERTY_NAME ) );
      }
  
      public void testShouldWriteSeparatedElementsAsSystemProperty()
      {
          Classpath classpath = Classpath.emptyClasspath().addClassPathElementUrl( DUMMY_URL_1 ).addClassPathElementUrl( DUMMY_URL_2 );
          classpath.writeToSystemProperty( DUMMY_PROPERTY_NAME );
          assertEquals( DUMMY_URL_1 + File.pathSeparatorChar + DUMMY_URL_2 + File.pathSeparatorChar,
                        System.getProperty( DUMMY_PROPERTY_NAME ) );
      }
  
      public void testShouldAddNoDuplicateElements()
      {
          Classpath classpath =
              emptyClasspath().addClassPathElementUrl( DUMMY_URL_1 ).addClassPathElementUrl( DUMMY_URL_1 );
          assertClasspathConsistsOfElements( classpath, new String[]{ DUMMY_URL_1 } );
      }
  
      public void testShouldJoinTwoNullClasspaths()
      {
          Classpath joinedClasspath = Classpath.join( null, null );
          assertEmptyClasspath( joinedClasspath );
      }
  
      public void testShouldHaveAllElementsAfterJoiningTwoDifferentClasspaths()
      {
          Classpath firstClasspath = Classpath.emptyClasspath();
          Classpath secondClasspath = firstClasspath.addClassPathElementUrl( DUMMY_URL_1 ).addClassPathElementUrl( DUMMY_URL_2 );
          Classpath joinedClasspath = Classpath.join( firstClasspath, secondClasspath );
          assertClasspathConsistsOfElements( joinedClasspath, new String[]{ DUMMY_URL_1, DUMMY_URL_2 } );
      }
  
      public void testShouldNotHaveDuplicatesAfterJoiningTowClasspathsWithEqualElements()
      {
          Classpath firstClasspath = Classpath.emptyClasspath().addClassPathElementUrl( DUMMY_URL_1 );
          Classpath secondClasspath = Classpath.emptyClasspath().addClassPathElementUrl( DUMMY_URL_1 );
          Classpath joinedClasspath = Classpath.join( firstClasspath, secondClasspath );
          assertClasspathConsistsOfElements( joinedClasspath, new String[]{ DUMMY_URL_1 } );
      }
  
      public void testShouldNotBeAbleToRemoveElement()
      {
          try
          {
              Classpath classpath = createClasspathWithTwoElements();
              classpath.getClassPath().remove( 0 );
          }
          catch ( java.lang.UnsupportedOperationException ignore )
          {
  
          }
      }
  
      private void assertClasspathConsistsOfElements( Classpath classpath, String[] elements )
      {
         List classpathElements = classpath.getClassPath();
         for ( String element : elements )
         {
             assertTrue( "The element '" + element + " is missing.", classpathElements.contains( element ) );
         }
         assertEquals( "Wrong number of classpath elements.", elements.length, classpathElements.size() );
     }
 
     private void assertEmptyClasspath( Classpath classpath )
     {
         List classpathElements = classpath.getClassPath();
         assertEquals( "Wrong number of classpath elements.", 0, classpathElements.size() );
     }
 
     private Classpath createClasspathWithTwoElements()
     {
         Classpath classpath = Classpath.emptyClasspath();
         return classpath.addClassPathElementUrl( DUMMY_URL_1 ).addClassPathElementUrl( DUMMY_URL_2 );
     }
 
     public void testShouldThrowIllegalArgumentExceptionWhenNullIsAddedAsClassPathElementUrl()
     {
         Classpath classpath = Classpath.emptyClasspath();
         try
         {
             classpath.addClassPathElementUrl( null );
             fail( "IllegalArgumentException not thrown." );
         }
         catch ( IllegalArgumentException expected )
         {
         }
     }
 
     public void testShouldNotAddNullAsClassPathElementUrl()
     {
         Classpath classpath = Classpath.emptyClasspath();
         try
         {
             classpath.addClassPathElementUrl( null );
         }
         catch ( IllegalArgumentException ignored )
         {
         }
         assertEmptyClasspath( classpath );
     }
 }