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  package org.apache.cayenne.query;
  
  import static org.junit.Assert.assertNotNull;
  
  import org.apache.cayenne.testdo.testmap.Artist;
  import org.junit.Test;
  
  public class SelectByIdTest {
  
  	@Test
  	public void testPrefetch() {
  
  		PrefetchTreeNode root = PrefetchTreeNode.withPath("a.b", PrefetchTreeNode.JOINT_PREFETCH_SEMANTICS);
  
  		SelectById<Artist> q = SelectById.query(Artist.class, 6);
  		q.prefetch(root);
  
  		PrefetchTreeNode prefetch = q.getPrefetches();
  
  		assertNotNull(prefetch);
  		assertNotNull(prefetch.getNode("a.b"));
  	}
  
  	@Test
  	public void testPrefetch_Path() {
  
  		SelectById<Artist> q = SelectById.query(Artist.class, 7);
  		q.prefetch("a.b", PrefetchTreeNode.DISJOINT_PREFETCH_SEMANTICS);
  		PrefetchTreeNode prefetch = q.getPrefetches();
  
  		assertNotNull(prefetch);
  		assertNotNull(prefetch.getNode("a.b"));
  
  		q.prefetch("a.c", PrefetchTreeNode.DISJOINT_PREFETCH_SEMANTICS);
  		prefetch = q.getPrefetches();
  
  		assertNotNull(prefetch);
  		assertNotNull(prefetch.getNode("a.c"));
  		assertNotNull(prefetch.getNode("a.b"));
  	}
  
  	@Test
  	public void testPrefetch_Subroot() {
  
  		PrefetchTreeNode root = PrefetchTreeNode.withPath("a.b", PrefetchTreeNode.JOINT_PREFETCH_SEMANTICS);
  
  		SelectById<Artist> q = SelectById.query(Artist.class, 8);
  		q.prefetch(root);
  
  		PrefetchTreeNode prefetch = q.getPrefetches();
  
  		assertNotNull(prefetch.getNode("a.b"));
  
  		PrefetchTreeNode subRoot = PrefetchTreeNode.withPath("a.b.c", PrefetchTreeNode.JOINT_PREFETCH_SEMANTICS);
  		q.prefetch(subRoot);
  
  		prefetch = q.getPrefetches();
  
  		assertNotNull(prefetch.getNode("a.b"));
  		assertNotNull(prefetch.getNode("a.b.c"));
  	}
  }
  