@Test
  public void testReadBadZNRecordCase1() throws Exception {
    ZNRecord zNRecord = makeZNRecordWithSimpleField(null, null, null);
    updateAndWriteZNRecord(zNRecord, true);
  }
Tests reading {@link ZNRecord} from {@link HelixPropertyStore}, where the {@link ZNRecord} is empty. This is a
good {@link ZNRecord} format that should NOT fail fetch or update.
@throws Exception Any unexpected exception.
ambry-account/src/test/java/com/github/ambry/account/HelixAccountServiceTest.java