### Question:
TupleRecord implements DBWritable { public TupleRecord() { } TupleRecord();  TupleRecord( Tuple tuple ); void setTuple( Tuple tuple ); Tuple getTuple(); void write( PreparedStatement statement ); void readFields( ResultSet resultSet );  }### Answer:
@Test public void testTupleRecord() { Tuple tup = new Tuple(); TupleRecord tupleRecord = new TupleRecord(); tupleRecord.setTuple( tup ); assertSame( tup, tupleRecord.getTuple() ); }