message: rafs: add test for RafsV6InodeChunkHeader
diff: @@ -827,6 +827,14 @@ mod tests {
  );
  }
  + #[test]
  + fn test_rafs_v6_chunk_header() {
  + let chunk_size: u32 = 1024 * 1024;
  + let header = RafsV6InodeChunkHeader::new(chunk_size);
  + let target = EROFS_CHUNK_FORMAT_INDEXES_FLAG | (20 - 12) as u16;
  + assert_eq!(u16::from_le(header.format), target);
  + }
  +
  #[test]
  fn test_rafs_v6_chunk_addr() {
  let temp = TempFile::new().unwrap();
  