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  package org.apache.cayenne.access;
  
  import java.util.List;
  
  import org.apache.cayenne.di.Inject;
  import org.apache.cayenne.query.ObjectSelect;
  import org.apache.cayenne.test.jdbc.DBHelper;
  import org.apache.cayenne.test.jdbc.TableHelper;
  import org.apache.cayenne.testdo.cay_2032.Team;
  import org.apache.cayenne.unit.di.runtime.CayenneProjects;
  import org.apache.cayenne.unit.di.runtime.RuntimeCase;
  import org.apache.cayenne.unit.di.runtime.UseCayenneRuntime;
  import org.junit.Before;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  
  /**
   * @since 4.0
   */
  @UseCayenneRuntime(CayenneProjects.CAY_2032)
  public class Cay2032IT extends RuntimeCase {
  
      @Inject
      private DataContext context;
  
      @Inject
      private DBHelper dbHelper;
  
      @Before
      public void createTestData() throws Exception {
          // USERS table has field `name` BLOB to trigger suppressDistinct in translator
          TableHelper tUser = new TableHelper(dbHelper, "USERS");
          tUser.setColumns("user_id");
          tUser.insert(1);
          tUser.insert(2);
          tUser.insert(3);
  
          TableHelper tTeam = new TableHelper(dbHelper, "TEAM");
          tTeam.setColumns("team_id");
          tTeam.insert(1);
          tTeam.insert(2);
          tTeam.insert(3);
          tTeam.insert(4);
  
          TableHelper tTeamHasUser = new TableHelper(dbHelper, "USER_HAS_TEAM");
          tTeamHasUser.setColumns("team_id", "user_id");
          tTeamHasUser.insert(1, 2);
          tTeamHasUser.insert(2, 1);
          tTeamHasUser.insert(2, 2);
          tTeamHasUser.insert(2, 3);
          tTeamHasUser.insert(3, 1);
          tTeamHasUser.insert(3, 3);
      }
  
      private void checkResult(List<Team> result) throws Exception {
          assertNotNull(result);
          assertEquals(4, result.size());
          assertEquals(1, result.get(0).getTeamUsers().size());
          assertEquals(3, result.get(1).getTeamUsers().size());
          assertEquals(2, result.get(2).getTeamUsers().size());
          assertEquals(0, result.get(3).getTeamUsers().size());
      }
  
      @Test
      public void testPrefetchDisjoint() throws Exception {
          List<Team> result = ObjectSelect.query(Team.class)
                  .prefetch(Team.TEAM_USERS.disjoint())
                  .orderBy(Team.TEAM_ID_PK_PROPERTY.asc())
                  .select(context);
  
          checkResult(result);
      }
  
      @Test
      public void testPrefetchDisjointById() throws Exception {
          List<Team> result = ObjectSelect.query(Team.class)
                  .prefetch(Team.TEAM_USERS.disjointById())
                  .orderBy(Team.TEAM_ID_PK_PROPERTY.asc())
                  .select(context);
  
          checkResult(result);
      }
  
      @Test
      public void testPrefetchJoint() throws Exception {
          List<Team> result = ObjectSelect.query(Team.class)
                  .prefetch(Team.TEAM_USERS.joint())
                  .orderBy(Team.TEAM_ID_PK_PROPERTY.asc())
                  .select(context);
  
          checkResult(result);
      }
  }
  