package org.apache.maven.surefire.its;
   
   /*
    * 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 org.apache.maven.surefire.its.fixture.SurefireJUnit4IntegrationTestCase;
  import org.apache.maven.surefire.its.fixture.SurefireLauncher;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.Properties;
  import java.util.StringTokenizer;
  
  import static org.apache.maven.surefire.its.fixture.SurefireLauncher.EXT_JDK_HOME;
  import static org.apache.maven.surefire.its.fixture.SurefireLauncher.EXT_JDK_HOME_KEY;
  import static org.junit.Assert.fail;
  import static org.junit.Assume.assumeTrue;
  
  /**
   * Abstract test class for Jigsaw tests.
   *
   * @author <a href="mailto:tibordigana@apache.org">Tibor Digana (tibor17)</a>
   * @since 2.20.1
   */
  public abstract class AbstractJigsawIT
          extends SurefireJUnit4IntegrationTestCase
  {
      private static final double JIGSAW_JAVA_VERSION = 9.0d;
  
      protected abstract String getProjectDirectoryName();
  
      protected SurefireLauncher assumeJigsaw() throws IOException
      {
          assumeTrue( "There's no JDK 9 provided.",
                            isJavaVersion9AtLeast() || EXT_JDK_HOME != null && isExtJavaVerion9AtLeast() );
          // fail( EXT_JDK_HOME_KEY + " was provided with value " + EXT_JDK_HOME + " but it is not Jigsaw Java 9." );
  
          SurefireLauncher launcher = unpack();
  
          return EXT_JDK_HOME == null ? launcher : launcher.setLauncherJavaHome( EXT_JDK_HOME );
      }
  
      protected SurefireLauncher assumeJava9Property() throws IOException
      {
          assumeTrue( "There's no JDK 9 provided.", EXT_JDK_HOME != null && isExtJavaVerion9AtLeast() );
          return unpack();
      }
  
      protected String getSuffix()
      {
          return null;
      }
  
      private SurefireLauncher unpack()
      {
          return unpack( getProjectDirectoryName(), getSuffix() );
      }
  
      private static boolean isJavaVersion9AtLeast()
      {
          return Double.valueOf( System.getProperty( "java.specification.version" ) ) >= JIGSAW_JAVA_VERSION;
      }
  
      private static boolean isExtJavaVerion9AtLeast() throws IOException
      {
          File release = new File( EXT_JDK_HOME, "release" );
          assumeTrue( EXT_JDK_HOME_KEY + " was provided with value " + EXT_JDK_HOME + " but file does not exist "
                  + EXT_JDK_HOME + File.separator + "release", release.exists() );
  
          Properties properties = new Properties();
          try ( InputStream is = new FileInputStream( release ) )
          {
              properties.load( is );
          }
          String javaVersion = properties.getProperty( "JAVA_VERSION" ).replace( "\"", "" );
          StringTokenizer versions = new StringTokenizer( javaVersion, "._" );
  
          if ( versions.countTokens() == 1 )
          {
              javaVersion = versions.nextToken();
          }
         else if ( versions.countTokens() >= 2 )
         {
             javaVersion = versions.nextToken() + "." + versions.nextToken();
         }
         else
         {
             fail( "unexpected java version format" );
         }
 
         return Double.valueOf( javaVersion ) >= JIGSAW_JAVA_VERSION;
     }
 }