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  package org.apache.cayenne.dbsync.naming;
  
  import org.apache.cayenne.map.DbAttribute;
  import org.apache.cayenne.map.DbEntity;
  import org.apache.cayenne.map.DbJoin;
  import org.apache.cayenne.map.DbRelationship;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  
  public class DefaultObjectNameGeneratorTest {
  
      private DefaultObjectNameGenerator generator = new DefaultObjectNameGenerator(NoStemStemmer.getInstance());
  
      private DbRelationship makeRelationship(String srcEntity, String srcKey, String targetEntity, String targetKey,
                                              boolean toMany) {
  
          DbRelationship relationship = new DbRelationship();
          relationship.addJoin(new DbJoin(relationship, srcKey, targetKey));
          relationship.setToMany(toMany);
          relationship.setSourceEntity(new DbEntity(srcEntity));
          relationship.setTargetEntityName(targetEntity);
  
          return relationship;
      }
  
      @Test
      public void testRelationshipName_LowerCase_Underscores() {
  
          DbRelationship r1 = makeRelationship("painting", "artist_id", "artist", "artist_id", false);
          assertEquals("artist", generator.relationshipName(r1));
  
          DbRelationship r2 = makeRelationship("artist", "artist_id", "painting", "artist_id", true);
          assertEquals("paintings", generator.relationshipName(r2));
  
          DbRelationship r3 = makeRelationship("person", "mother_id", "person", "person_id", false);
          assertEquals("mother", generator.relationshipName(r3));
  
          DbRelationship r4 = makeRelationship("person", "person_id", "person", "mother_id", true);
          assertEquals("people", generator.relationshipName(r4));
  
          DbRelationship r5 = makeRelationship("person", "shipping_address_id", "address", "id", false);
          assertEquals("shippingAddress", generator.relationshipName(r5));
  
          DbRelationship r6 = makeRelationship("person", "id", "address", "person_id", true);
          assertEquals("addresses", generator.relationshipName(r6));
      }
  
      @Test
      public void testRelationshipName_UpperCase_Underscores() {
  
          DbRelationship r1 = makeRelationship("PAINTING", "ARTIST_ID", "ARTIST", "ARTIST_ID", false);
          assertEquals("artist", generator.relationshipName(r1));
  
          DbRelationship r2 = makeRelationship("ARTIST", "ARTIST_ID", "PAINTING", "ARTIST_ID", true);
          assertEquals("paintings", generator.relationshipName(r2));
  
          DbRelationship r3 = makeRelationship("PERSON", "MOTHER_ID", "PERSON", "PERSON_ID", false);
          assertEquals("mother", generator.relationshipName(r3));
  
          DbRelationship r4 = makeRelationship("PERSON", "PERSON_ID", "PERSON", "MOTHER_ID", true);
          assertEquals("people", generator.relationshipName(r4));
  
          DbRelationship r5 = makeRelationship("PERSON", "SHIPPING_ADDRESS_ID", "ADDRESS", "ID", false);
          assertEquals("shippingAddress", generator.relationshipName(r5));
  
          DbRelationship r6 = makeRelationship("PERSON", "ID", "ADDRESS", "PERSON_ID", true);
          assertEquals("addresses", generator.relationshipName(r6));
      }
  
      @Test
      public void testObjEntityName() {
          assertEquals("Artist", generator.objEntityName(new DbEntity("ARTIST")));
          assertEquals("ArtistWork", generator.objEntityName(new DbEntity("ARTIST_WORK")));
      }
  
      @Test
      public void testObjAttributeName() {
          assertEquals("name", generator.objAttributeName(new DbAttribute("NAME")));
          assertEquals("artistName", generator.objAttributeName(new DbAttribute("ARTIST_NAME")));
      }
  }
  