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  package org.apache.cayenne.dbsync.reverse.dbload;
  
  import java.util.Collection;
  
  import org.apache.cayenne.map.DbAttribute;
  import org.apache.cayenne.map.DbEntity;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  
  public class PrimaryKeyLoaderIT extends BaseLoaderIT {
  
      @Test
      public void testPrimaryKeyLoad() throws Exception {
          createDbEntities();
          DbEntity artist = getDbEntity(nameForDb("ARTIST"));
          DbAttribute artistId = new DbAttribute(nameForDb("ARTIST_ID"));
          DbAttribute artistName = new DbAttribute(nameForDb("ARTIST_NAME"));
          DbAttribute artistId1 = new DbAttribute(nameForDb("ARTIST_ID1"));
  
          artist.addAttribute(artistId);
          artist.addAttribute(artistName);
          artist.addAttribute(artistId1);
          assertFalse(artistId.isPrimaryKey());
          assertFalse(artistName.isPrimaryKey());
          assertFalse(artistId1.isPrimaryKey());
  
          PrimaryKeyLoader loader = new PrimaryKeyLoader(EMPTY_CONFIG, new DefaultDbLoaderDelegate());
          loader.load(connection.getMetaData(), store);
  
          assertTrue(artistId.isPrimaryKey());
          assertFalse(artistId1.isPrimaryKey());
          assertFalse(artistName.isPrimaryKey());
          Collection<DbAttribute> pk = artist.getPrimaryKeys();
          assertEquals(1, pk.size());
          assertEquals(artistId, pk.iterator().next());
      }
  
  }
  