message: test: add tests to show the minimum occupied capacity of cells
diff: @@ -796,7 +796,7 @@ mod test {
  use crate::{capacity_bytes, Bytes, Capacity};
  #[test]
  - fn test_tx_hash() {
  + fn tx_hash() {
  let tx = TransactionBuilder::default()
  .output(CellOutput::new(
  capacity_bytes!(5000),
  @@ -817,4 +817,18 @@ mod test {
  "816db0491b8dfa92ec7a77e07d98c47105fe5a33ddb05ef9f2b24132ac3cc793"
  );
  }
  +
  + #[test]
  + fn min_cell_output_capacity() {
  + let lock = Script::new(vec![], H256::default());
  + let output = CellOutput::new(Capacity::zero(), Default::default(), lock, None);
  + assert_eq!(output.occupied_capacity().unwrap(), capacity_bytes!(48));
  + }
  +
  + #[test]
  + fn min_secp256k1_cell_output_capacity() {
  + let lock = Script::new(vec![vec![0u8; 20].into()], H256::default());
  + let output = CellOutput::new(Capacity::zero(), Default::default(), lock, None);
  + assert_eq!(output.occupied_capacity().unwrap(), capacity_bytes!(72));
  + }
  }
  