source: class TupleIteratorTest {
  
  	private static IRdbRelation relation;
  	private static IRdbRelation emptyRelation;
  	private static Connection connection;
  	private static ITuple tuple;
  	private TupleIterator iterator;
  
  	@Test
  	public void testEmptyRelation() {
  
target: 		CloseableIterator<ITuple> iterator = emptyRelation.iterator();
  
  		Assert.assertFalse(iterator.hasNext());
  	}
  
  }