updateRecord.setLastname("Jones");
int rows = mapper.updateByPrimaryKey(updateRecord);
assertEquals(1, rows);
Pkfieldsblobs newRecord = mapper.selectByPrimaryKey(3, 4);
assertEquals(updateRecord.getFirstname(), newRecord.getFirstname());
assertEquals(updateRecord.getLastname(), newRecord.getLastname());
assertEquals(record.getId1(), newRecord.getId1());
assertEquals(record.getId2(), newRecord.getId2());
assertTrue(blobsAreEqual(record.getBlob1(), newRecord.getBlob1()));