package org.exoplatform.wiki.jpa.migration.mock;
   
   import java.util.Collections;
   import java.util.List;
   import java.util.concurrent.AbstractExecutorService;
   import java.util.concurrent.TimeUnit;
   
   /**
    * Synchronous executor to run the task in the same thread than the caller.
   * Necessary for unit tests.
   */
  public class SynchronousExecutorService extends AbstractExecutorService {
    private boolean shutdown;
  
    @Override
    public void shutdown() {
      shutdown = true;
    }
  
    @Override
    public List<Runnable> shutdownNow() {
      shutdown = true;
      return Collections.emptyList();
    }
  
    @Override
    public boolean isShutdown() {
      shutdown = true;
      return shutdown;
    }
  
    @Override
    public boolean isTerminated() {
      return shutdown;
    }
  
    @Override
    public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException {
      return true;
    }
  
    @Override
    public void execute(Runnable command) {
      command.run();
    }
  }