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  package org.apache.cayenne.project.compatibility.configuration;
  
  import java.net.URL;
  
  import org.apache.cayenne.configuration.ConfigurationTree;
  import org.apache.cayenne.configuration.DataChannelDescriptor;
  import org.apache.cayenne.configuration.DataChannelDescriptorLoader;
  import org.apache.cayenne.configuration.DataMapLoader;
  import org.apache.cayenne.configuration.xml.XMLReaderProvider;
  import org.apache.cayenne.di.DIBootstrap;
  import org.apache.cayenne.di.Injector;
  import org.apache.cayenne.map.DataMap;
  import org.apache.cayenne.project.compatibility.CompatibilityTestModule;
  import org.apache.cayenne.resource.Resource;
  import org.apache.cayenne.resource.URLResource;
  import org.junit.Test;
  import org.xml.sax.XMLReader;
  
  import static org.junit.Assert.*;
  
  /**
   * @since 4.1
   */
  public class CompatibilityDataChannelDescriptorLoaderIT {
  
      @Test
      public void testLoad() {
          Injector injector = getInjector();
  
          DataChannelDescriptorLoader loader = injector.getInstance(DataChannelDescriptorLoader.class);
          assertTrue(loader instanceof CompatibilityDataChannelDescriptorLoader);
  
          URL resourceUrl = getClass().getResource("../cayenne-project-v6.xml");
          Resource resource = new URLResource(resourceUrl);
  
          ConfigurationTree<DataChannelDescriptor> configurationTree = loader.load(resource);
          assertNotNull(configurationTree.getRootNode());
          assertTrue(configurationTree.getLoadFailures().isEmpty());
          assertEquals(1, configurationTree.getRootNode().getDataMaps().size());
  
          DataMap dataMap = configurationTree.getRootNode().getDataMaps().iterator().next();
          assertEquals(1, dataMap.getDbEntities().size());
          assertEquals(1, dataMap.getObjEntities().size());
          assertNotNull(dataMap.getObjEntity("Artist"));
          assertNotNull(dataMap.getDbEntity("Artist"));
          assertEquals(2, dataMap.getDbEntity("Artist").getAttributes().size());
      }
  
      private Injector getInjector() {
          return DIBootstrap.createInjector(
              new CompatibilityTestModule(),
              binder -> {
                  binder.bind(XMLReader.class).toProviderInstance(new XMLReaderProvider(false)).withoutScope();
                  binder.bind(DataChannelDescriptorLoader.class).to(CompatibilityDataChannelDescriptorLoader.class);
                  binder.bind(DataMapLoader.class).to(CompatibilityDataMapLoader.class);
              }
          );
      }
  }