public void test_updateRef() throws Exception { resultSet.next(); resultSet.updateRef(1, (Ref) null); resultSet.updateRef("1", (Ref) null); { SQLException error = null; try { resultSet.updateRef(0, (Ref) null); } catch (SQLException ex) { error = ex; } Assert.assertNotNull(error); } { SQLException error = null; try { resultSet.updateRef("0", (Ref) null); } catch (SQLException ex) { error = ex; } Assert.assertNotNull(error); } }