package org.eclipse.aether.util.graph.transformer;
   
   /*
    * 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 static org.junit.Assert.*;
  
  import java.util.Locale;
  
  import org.eclipse.aether.collection.DependencyGraphTransformer;
  import org.eclipse.aether.graph.DependencyNode;
  import org.eclipse.aether.internal.test.util.DependencyGraphParser;
  import org.junit.Test;
  
  public class JavaScopeSelectorTest
      extends AbstractDependencyGraphTransformerTest
  {
  
      private enum Scope
      {
          TEST, PROVIDED, RUNTIME, COMPILE;
  
          @Override
          public String toString()
          {
              return super.name().toLowerCase( Locale.ENGLISH );
          }
      }
  
      @Override
      protected DependencyGraphTransformer newTransformer()
      {
          return new ConflictResolver( new NearestVersionSelector(), new JavaScopeSelector(),
                                       new SimpleOptionalitySelector(), new JavaScopeDeriver() );
      }
  
      @Override
      protected DependencyGraphParser newParser()
      {
          return new DependencyGraphParser( "transformer/scope-calculator/" );
      }
  
      private void expectScope( String expected, DependencyNode root, int... coords )
      {
          expectScope( null, expected, root, coords );
      }
  
      private void expectScope( String msg, String expected, DependencyNode root, int... coords )
      {
          if ( msg == null )
          {
              msg = "";
          }
          try
          {
              DependencyNode node = root;
              node = path( node, coords );
  
              assertEquals( msg + "\nculprit: " + node.toString() + "\n", expected, node.getDependency().getScope() );
          }
          catch ( IndexOutOfBoundsException e )
          {
              throw new IllegalArgumentException( "illegal coordinates for child", e );
          }
          catch ( NullPointerException e )
          {
              throw new IllegalArgumentException( "illegal coordinates for child", e );
          }
      }
  
      private DependencyNode path( DependencyNode node, int... coords )
      {
          for ( int coord : coords )
          {
              node = node.getChildren().get( coord );
          }
          return node;
      }
  
      @Test
      public void testScopeInheritanceProvided()
          throws Exception
      {
         String resource = "inheritance.txt";
 
         String expected = "test";
         DependencyNode root = transform( parseResource( resource, "provided", "test" ) );
         expectScope( parser.dump( root ), expected, root, 0, 0 );
     }
 
     @Test
     public void testConflictWinningScopeGetsUsedForInheritance()
         throws Exception
     {
         DependencyNode root = parseResource( "conflict-and-inheritance.txt" );
         assertSame( root, transform( root ) );
 
         expectScope( "compile", root, 0, 0 );
         expectScope( "compile", root, 0, 0, 0 );
     }
 
     @Test
     public void testScopeOfDirectDependencyWinsConflictAndGetsUsedForInheritanceToChildrenEverywhereInGraph()
         throws Exception
     {
         DependencyNode root = parseResource( "direct-with-conflict-and-inheritance.txt" );
         assertSame( root, transform( root ) );
 
         expectScope( "test", root, 0, 0 );
     }
 
     @Test
     public void testCycleA()
         throws Exception
     {
         DependencyNode root = parseResource( "cycle-a.txt" );
         assertSame( root, transform( root ) );
 
         expectScope( "compile", root, 0 );
         expectScope( "runtime", root, 1 );
     }
 
     @Test
     public void testCycleB()
         throws Exception
     {
         DependencyNode root = parseResource( "cycle-b.txt" );
         assertSame( root, transform( root ) );
 
         expectScope( "runtime", root, 0 );
         expectScope( "compile", root, 1 );
     }
 
     @Test
     public void testCycleC()
         throws Exception
     {
         DependencyNode root = parseResource( "cycle-c.txt" );
         assertSame( root, transform( root ) );
 
         expectScope( "runtime", root, 0 );
         expectScope( "runtime", root, 0, 0 );
         expectScope( "runtime", root, 1 );
         expectScope( "runtime", root, 1, 0 );
     }
 
     @Test
     public void testCycleD()
         throws Exception
     {
         DependencyNode root = parseResource( "cycle-d.txt" );
         assertSame( root, transform( root ) );
 
         expectScope( "compile", root, 0 );
         expectScope( "compile", root, 0, 0 );
     }
 
     @Test
     public void testDirectNodesAlwaysWin()
         throws Exception
     {
 
         for ( Scope directScope : Scope.values() )
         {
             String direct = directScope.toString();
 
             DependencyNode root = parseResource( "direct-nodes-winning.txt", direct );
 
             String msg =
                 String.format( "direct node should be setting scope ('%s') for all nodes.\n" + parser.dump( root ),
                                direct );
             assertSame( root, transform( root ) );
             msg += "\ntransformed:\n" + parser.dump( root );
 
             expectScope( msg, direct, root, 0 );
         }
     }
 
     @Test
     public void testNonDirectMultipleInheritance()
         throws Exception
     {
         for ( Scope scope1 : Scope.values() )
         {
             for ( Scope scope2 : Scope.values() )
             {
                 DependencyNode root = parseResource( "multiple-inheritance.txt", scope1.toString(), scope2.toString() );
 
                 String expected = scope1.compareTo( scope2 ) >= 0 ? scope1.toString() : scope2.toString();
                 String msg = String.format( "expected '%s' to win\n" + parser.dump( root ), expected );
 
                 assertSame( root, transform( root ) );
                 msg += "\ntransformed:\n" + parser.dump( root );
 
                 expectScope( msg, expected, root, 0, 0 );
             }
         }
     }
 
     @Test
     public void testConflictScopeOrdering()
         throws Exception
     {
         for ( Scope scope1 : Scope.values() )
         {
             for ( Scope scope2 : Scope.values() )
             {
                 DependencyNode root = parseResource( "dueling-scopes.txt", scope1.toString(), scope2.toString() );
 
                 String expected = scope1.compareTo( scope2 ) >= 0 ? scope1.toString() : scope2.toString();
                 String msg = String.format( "expected '%s' to win\n" + parser.dump( root ), expected );
 
                 assertSame( root, transform( root ) );
                 msg += "\ntransformed:\n" + parser.dump( root );
 
                 expectScope( msg, expected, root, 0, 0 );
             }
         }
     }
 
     /**
      * obscure case (illegal maven POM).
      */
     @Test
     public void testConflictingDirectNodes()
         throws Exception
     {
         for ( Scope scope1 : Scope.values() )
         {
             for ( Scope scope2 : Scope.values() )
             {
                 DependencyNode root = parseResource( "conflicting-direct-nodes.txt", scope1.toString(), scope2.toString() );
 
                 String expected = scope1.toString();
                 String msg = String.format( "expected '%s' to win\n" + parser.dump( root ), expected );
 
                 assertSame( root, transform( root ) );
                 msg += "\ntransformed:\n" + parser.dump( root );
 
                 expectScope( msg, expected, root, 0 );
             }
         }
     }
 
 }