public void ReadDateTimeNullTest()
{
byte[] bytes = "7E0000000000000000000000000000007E".ToHexBytes();
JT808MessagePackReader jT808MessagePackReader = new JT808MessagePackReader(bytes);
Assert.Equal(JT808Package.BeginFlag, jT808MessagePackReader.ReadStart());
Assert.Null(jT808MessagePackReader.ReadDateTimeNull_YYYYMMDD());
Assert.Null(jT808MessagePackReader.ReadDateTimeNull_HHmmssfff());
Assert.Null(jT808MessagePackReader.ReadDateTimeNull_yyMMddHHmmss());
Assert.Equal(JT808Package.EndFlag, jT808MessagePackReader.ReadEnd());
}