RetrieveRegisteredClassesTest.java

package org.jboss.resteasy.test.providers.custom;

import java.io.IOException;
import java.util.Set;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.ClientRequestContext;
import javax.ws.rs.client.ClientRequestFilter;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.Configuration;
import javax.ws.rs.core.MediaType;

import org.jboss.arquillian.container.test.api.Deployment;
import org.jboss.arquillian.container.test.api.RunAsClient;
import org.jboss.arquillian.junit.Arquillian;
import org.jboss.resteasy.utils.PortProviderUtil;
import org.jboss.resteasy.utils.TestUtil;
import org.jboss.shrinkwrap.api.Archive;
import org.jboss.shrinkwrap.api.spec.WebArchive;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;

@RunWith(Arquillian.class)
@RunAsClient
public class RetrieveRegisteredClassesTest
{

   @Path("/testResource")
   @Produces(MediaType.APPLICATION_XML)
   public static final class TestResource
   {

      @GET
      public String get()
      {
         return TestResource.class.getName();
      }

   }

   private static class MyFilter implements ClientRequestFilter
   {

      // To discard empty constructor
      private MyFilter(Object value)
      {
      }

      @Override
      public void filter(ClientRequestContext clientRequestContext) throws IOException
      {
      }

   }

   @Deployment
   public static Archive<?> deploy()
   {
      WebArchive war = TestUtil.prepareArchive(RetrieveRegisteredClassesTest.class.getSimpleName());
      return TestUtil.finishContainerPrepare(war, null, TestResource.class);
   }

   @Test
   public void test()
   {

      Client client = ClientBuilder.newClient();
      try
      {
         String uri = PortProviderUtil
               .generateURL("/testResource", RetrieveRegisteredClassesTest.class.getSimpleName());
         MyFilter myFilter = new MyFilter(new Object());

         WebTarget firstWebTarget = client.target(uri).register(myFilter);
         String firstResult = firstWebTarget.request(MediaType.APPLICATION_XML).get(String.class);
         Configuration firstWebTargetConfiguration = firstWebTarget.getConfiguration();
         Set<Class<?>> classes = firstWebTargetConfiguration.getClasses();
         Set<Object> instances = firstWebTargetConfiguration.getInstances();
         Assert.assertFalse(classes.contains(MyFilter.class));
         Assert.assertTrue(instances.contains(myFilter));

         WebTarget secondWebTarget = client.target(uri);
         Configuration secondWebTargetConfiguration = secondWebTarget.getConfiguration();
         for (Class<?> classz : classes)
         {
            if (!secondWebTargetConfiguration.isRegistered(classz))
            {
               secondWebTarget.register(classz);
            }
         }
         for (Object instance : instances)
         {
            if (!secondWebTargetConfiguration.isRegistered(instance.getClass()))
            {
               secondWebTarget.register(instance);
            }
         }
         String secondeResult = secondWebTarget.request(MediaType.APPLICATION_XML).get(String.class);
         classes = secondWebTargetConfiguration.getClasses();
         instances = secondWebTargetConfiguration.getInstances();
         Assert.assertFalse(classes.contains(MyFilter.class));
         Assert.assertTrue(instances.contains(myFilter));
         Assert.assertEquals(firstResult, secondeResult);
      }
      finally
      {
         client.close();
      }

   }

}