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  package org.apache.cayenne;
  
  import org.apache.cayenne.di.Inject;
  import org.apache.cayenne.query.SelectById;
  import org.apache.cayenne.testdo.relationships.MeaningfulFK;
  import org.apache.cayenne.testdo.relationships.RelationshipHelper;
  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.apache.cayenne.validation.ValidationResult;
  import org.junit.Test;
  
  import static org.junit.Assert.*;
  
  @UseCayenneRuntime(CayenneProjects.RELATIONSHIPS_PROJECT)
  public class MeaningfulFKIT extends RuntimeCase {
  
      @Inject
      private ObjectContext context;
  
      @Test
      public void testValidateForSave1() throws Exception {
          MeaningfulFK testObject = context.newObject(MeaningfulFK.class);
  
          ValidationResult validation = new ValidationResult();
          testObject.validateForSave(validation);
          assertTrue(
                  "Must fail validation due to missing required relationship",
                  validation.hasFailures());
          assertEquals(
                  "Must fail validation due to missing required relationship",
                  1,
                  validation.getFailures().size());
      }
  
      @Test
      public void testValidateForSave2() throws Exception {
          MeaningfulFK testObject = context.newObject(MeaningfulFK.class);
  
          RelationshipHelper related = context.newObject(RelationshipHelper.class);
          testObject.setToRelationshipHelper(related);
  
          ValidationResult validation = new ValidationResult();
          testObject.validateForSave(validation);
          assertFalse(validation.hasFailures());
      }
  
      @Test
      public void testMeaningfulFKSet() {
          MeaningfulFK testObject = context.newObject(MeaningfulFK.class);
  
          RelationshipHelper related = context.newObject(RelationshipHelper.class);
          testObject.setToRelationshipHelper(related);
  
          context.commitChanges();
  
          MeaningfulFK testObject2 = SelectById.query(MeaningfulFK.class, testObject.getObjectId()).selectOne(context);
          assertNotEquals(0, testObject2.getRelationshipHelperID());
      }
  }
  