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  package org.apache.cayenne.query;
  
  import org.apache.cayenne.ObjectId;
  import org.apache.cayenne.util.Util;
  import org.junit.Test;
  
  import static org.junit.Assert.*;
  
  public class ObjectIdQueryTest {
  
      @Test
      public void testConstructorObjectId() {
  
          ObjectId oid = ObjectId.of("MockPersistentObject", "a", "b");
          ObjectIdQuery query = new ObjectIdQuery(oid);
  
          assertSame(oid, query.getObjectId());
      }
  
      @Test
      public void testSerializability() throws Exception {
          ObjectId oid = ObjectId.of("test", "a", "b");
          ObjectIdQuery query = new ObjectIdQuery(oid);
  
          Object o = Util.cloneViaSerialization(query);
          assertNotNull(o);
          assertTrue(o instanceof ObjectIdQuery);
          assertEquals(oid, ((ObjectIdQuery) o).getObjectId());
      }
  
      /**
       * Proper 'equals' and 'hashCode' implementations are important when mapping
       * results obtained in a QueryChain back to the query.
       */
      @Test
      public void testEquals() throws Exception {
          ObjectIdQuery q1 = new ObjectIdQuery(ObjectId.of("abc", "a", 1));
          ObjectIdQuery q2 = new ObjectIdQuery(ObjectId.of("abc", "a", 1));
          ObjectIdQuery q3 = new ObjectIdQuery(ObjectId.of("abc", "a", 3));
          ObjectIdQuery q4 = new ObjectIdQuery(ObjectId.of("123", "a", 1));
  
          assertTrue(q1.equals(q2));
          assertEquals(q1.hashCode(), q2.hashCode());
  
          assertFalse(q1.equals(q3));
          assertFalse(q1.hashCode() == q3.hashCode());
  
          assertFalse(q1.equals(q4));
          assertFalse(q1.hashCode() == q4.hashCode());
      }
  
      @Test
      public void testMetadata() {
          ObjectIdQuery q1 = new ObjectIdQuery(ObjectId.of("abc", "a", 1), true, ObjectIdQuery.CACHE_REFRESH);
  
          assertTrue(q1.isFetchAllowed());
          assertTrue(q1.isFetchMandatory());
  
          QueryMetadata md1 = q1.getMetaData(null);
          assertTrue(md1.isFetchingDataRows());
  
          ObjectIdQuery q2 = new ObjectIdQuery(ObjectId.of("abc", "a", 1), false, ObjectIdQuery.CACHE);
  
          assertTrue(q2.isFetchAllowed());
          assertFalse(q2.isFetchMandatory());
  
          QueryMetadata md2 = q2.getMetaData(null);
          assertFalse(md2.isFetchingDataRows());
  
          ObjectIdQuery q3 = new ObjectIdQuery(ObjectId.of("abc", "a", 1), false, ObjectIdQuery.CACHE_NOREFRESH);
  
          assertFalse(q3.isFetchAllowed());
          assertFalse(q3.isFetchMandatory());
  
          QueryMetadata md3 = q3.getMetaData(null);
          assertFalse(md3.isFetchingDataRows());
      }
  }
  