package org.apache.maven.wrapper;
   
   import static org.junit.Assert.assertTrue;
   import static org.junit.Assert.fail;
   
   /*
    * 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.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  import java.io.BufferedWriter;
  import java.io.IOException;
  import java.io.OutputStream;
  import java.net.URI;
  import java.net.URISyntaxException;
  import java.net.URL;
  import java.nio.charset.StandardCharsets;
  import java.nio.file.FileVisitResult;
  import java.nio.file.Files;
  import java.nio.file.Path;
  import java.nio.file.Paths;
  import java.nio.file.SimpleFileVisitor;
  import java.nio.file.attribute.BasicFileAttributes;
  import java.nio.file.attribute.FileTime;
  import java.util.jar.JarOutputStream;
  import java.util.jar.Manifest;
  import java.util.zip.ZipEntry;
  import java.util.zip.ZipException;
  import java.util.zip.ZipOutputStream;
  
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.TemporaryFolder;
  
  /**
   * @author Hans Dockter
   */
  public class InstallerTest
  {
    @Rule
    public TemporaryFolder tempFolder = TemporaryFolder.builder().assureDeletion().build();
  
    private Path testDir;
  
    private Installer install;
  
    private Path distributionDir;
  
    private Path zipStore;
  
    private Path mavenHomeDir;
  
    private Path zipDestination;
  
    private WrapperConfiguration configuration = new WrapperConfiguration();
  
    private Downloader download;
  
    private PathAssembler pathAssembler;
  
    private PathAssembler.LocalDistribution localDistribution;
  
    @Before
    public void setup()
      throws Exception
    {
      testDir = tempFolder.getRoot().toPath();
  
      configuration.setZipBase( PathAssembler.PROJECT_STRING );
      configuration.setZipPath( Paths.get( "someZipPath" ) );
      configuration.setDistributionBase( PathAssembler.MAVEN_USER_HOME_STRING );
      configuration.setDistributionPath( Paths.get( "someDistPath" ) );
      configuration.setDistribution( new URI( "http://server/maven-0.9.zip" ) );
      configuration.setAlwaysDownload( false );
      configuration.setAlwaysUnpack( false );
      distributionDir = testDir.resolve( "someDistPath" );
      mavenHomeDir = distributionDir.resolve( "maven-0.9" );
      zipStore = testDir.resolve( "zips" );
      zipDestination = zipStore.resolve( "maven-0.9.zip" );
  
     download = mock( Downloader.class );
     pathAssembler = mock( PathAssembler.class );
     localDistribution = mock( PathAssembler.LocalDistribution.class );
 
     when( localDistribution.getZipFile() ).thenReturn( zipDestination );
     when( localDistribution.getDistributionDir() ).thenReturn( distributionDir );
     when( pathAssembler.getDistribution( configuration ) ).thenReturn( localDistribution );
 
     install = new Installer( download, pathAssembler );
   }
 
   private void createTestZip( Path zipDestination )
     throws Exception
   {
     Path explodedZipDir = testDir.resolve( "explodedZip" );
     Files.createDirectories( explodedZipDir );
     Files.createDirectories( zipDestination.getParent() );
     Path mavenScript = explodedZipDir.resolve( "maven-0.9/bin/mvn" );
     Path mavenLib = explodedZipDir.resolve( "maven-0.9/lib/maven-core-0.9.jar" );
     Files.createDirectories( mavenScript.getParent() );
     Files.createDirectories( mavenLib.getParent() );
     try ( BufferedWriter writer = Files.newBufferedWriter( mavenScript, StandardCharsets.UTF_8 ) )
     {
       writer.write( "something" );
     }
     try ( OutputStream os = Files.newOutputStream( mavenLib );
             JarOutputStream jar = new JarOutputStream( os, new Manifest() ) )
     {
       jar.putNextEntry( new ZipEntry( "test" ) );
       jar.closeEntry();
     }
 
     zipTo( explodedZipDir, zipDestination );
   }
 
   public void testCreateDist()
     throws Exception
   {
     Path homeDir = install.createDist( configuration );
 
     Assert.assertEquals( mavenHomeDir, homeDir );
     Assert.assertTrue( Files.isDirectory( homeDir ) );
     Assert.assertTrue( Files.exists( homeDir.resolve( "bin/mvn" ) ) );
     Assert.assertTrue( Files.exists( zipDestination ) );
 
     Assert.assertEquals( localDistribution, pathAssembler.getDistribution( configuration ) );
     Assert.assertEquals( distributionDir, localDistribution.getDistributionDir() );
     Assert.assertEquals( zipDestination, localDistribution.getZipFile() );
 
     // download.download(new URI("http://some/test"), distributionDir);
     // verify(download).download(new URI("http://some/test"), distributionDir);
   }
 
   @Test
   public void testCreateDistWithExistingDistribution()
     throws Exception
   {
 
     createTestZip( zipDestination );
     Files.createDirectories( mavenHomeDir );
     Path someFile = mavenHomeDir.resolve( "some-file" );
     touchFile( someFile );
 
     Path homeDir = install.createDist( configuration );
 
     Assert.assertEquals( mavenHomeDir, homeDir );
     Assert.assertTrue( Files.isDirectory( mavenHomeDir ) );
     Assert.assertTrue( Files.exists( homeDir.resolve( "some-file" ) ) );
     Assert.assertTrue( Files.exists( zipDestination ) );
 
     Assert.assertEquals( localDistribution, pathAssembler.getDistribution( configuration ) );
     Assert.assertEquals( distributionDir, localDistribution.getDistributionDir() );
     Assert.assertEquals( zipDestination, localDistribution.getZipFile() );
   }
 
   @Test
   public void testCreateDistWithExistingDistAndZipAndAlwaysUnpackTrue()
     throws Exception
   {
 
     createTestZip( zipDestination );
     Files.createDirectories( mavenHomeDir );
     Path garbage = mavenHomeDir.resolve( "garbage" );
     touchFile( garbage );
     configuration.setAlwaysUnpack( true );
 
     Path homeDir = install.createDist( configuration );
 
     Assert.assertEquals( mavenHomeDir, homeDir );
     Assert.assertTrue( Files.isDirectory( mavenHomeDir ) );
     Assert.assertFalse( Files.exists( homeDir.resolve( "garbage" ) ) );
     Assert.assertTrue( Files.exists( zipDestination ) );
 
     Assert.assertEquals( localDistribution, pathAssembler.getDistribution( configuration ) );
     Assert.assertEquals( distributionDir, localDistribution.getDistributionDir() );
     Assert.assertEquals( zipDestination, localDistribution.getZipFile() );
   }
 
   @Test
   public void testCreateDistWithExistingZipAndDistAndAlwaysDownloadTrue()
     throws Exception
   {
 
     createTestZip( zipDestination );
     Path garbage = mavenHomeDir.resolve( "garbage" );
     touchFile( garbage );
     configuration.setAlwaysUnpack( true );
 
     Path homeDir = install.createDist( configuration );
 
     Assert.assertEquals( mavenHomeDir, homeDir );
     Assert.assertTrue( Files.isDirectory( mavenHomeDir ) );
     Assert.assertTrue( Files.exists( homeDir.resolve( "bin/mvn" ) ) );
     Assert.assertFalse( Files.exists( homeDir.resolve( "garbage" ) ) );
     Assert.assertTrue( Files.exists( zipDestination ) );
 
     Assert.assertEquals( localDistribution, pathAssembler.getDistribution( configuration ) );
     Assert.assertEquals( distributionDir, localDistribution.getDistributionDir() );
     Assert.assertEquals( zipDestination, localDistribution.getZipFile() );
 
     // download.download(new URI("http://some/test"), distributionDir);
     // verify(download).download(new URI("http://some/test"), distributionDir);
   }
 
   @Test
   public void testZipSlip()
     throws URISyntaxException
   {
     URL resource = getClass().getClassLoader().getResource( "zip-slip.zip" );
     Path zipSlip = Paths.get( resource.toURI() );
     when( localDistribution.getZipFile() ).thenReturn( zipSlip );
     configuration.setAlwaysUnpack( true );
 
     try
     {
       install.createDist( configuration );
       fail( "Should fail as it contains a zip slip." );
     }
     catch ( Exception ex )
     {
       assertTrue( ex instanceof ZipException );
     }
   }
 
   public void zipTo( final Path directoryToZip, final Path zipFile )
     throws IOException
   {
     // Creating a ZipOutputStream by wrapping a OutputStream
     try ( OutputStream fos = Files.newOutputStream( zipFile ); ZipOutputStream zos = new ZipOutputStream( fos ) )
     {
       // Walk the tree structure using WalkFileTree method
       Files.walkFileTree( directoryToZip, new SimpleFileVisitor<Path>()
       {
         @Override
         // Before visiting the directory create the directory in zip archive
         public FileVisitResult preVisitDirectory( final Path dir, final BasicFileAttributes attrs )
           throws IOException
         {
           // Don't create dir for root folder as it is already created with .zip name
           if ( !directoryToZip.equals( dir ) )
           {
             zos.putNextEntry( new ZipEntry( directoryToZip.relativize( dir ).toString() + "/" ) );
             zos.closeEntry();
           }
           return FileVisitResult.CONTINUE;
         }
 
         @Override
         // For each visited file add it to zip entry
         public FileVisitResult visitFile( final Path file, final BasicFileAttributes attrs )
           throws IOException
         {
           zos.putNextEntry( new ZipEntry( directoryToZip.relativize( file ).toString() ) );
           Files.copy( file, zos );
           zos.closeEntry();
           return FileVisitResult.CONTINUE;
         }
       } );
     }
   }
 
   private void touchFile( Path file )
     throws IOException
   {
     if ( Files.notExists( file ) )
     {
       Files.createDirectories( file.getParent() );
       Files.createFile( file );
     }
     Files.setLastModifiedTime( file, FileTime.fromMillis( System.currentTimeMillis() ) );
   }
 
 }