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Ledger Team Update

· 3 min read
Alexey Kuleshevich
Alexey Kuleshevich
Ledger Team Software Engineer

High level summary​

Last two weeks progress was mainly on testing, bug fixes and improvements to clarity of CDDL specification. Important bugfixes include:

  • Fix deserialization of ValueNotConservedUTxO predicate failure that could not previously report zero ADA.
  • Fix deserialization of CostModels in the PParamsUpdate. Invalid CostModels are no longer allowed, only CostModels for unrecognized Plutus versions are allowed starting with Conway
  • Fix returning of Deposits for ProposalProcedures

Testing tooling has been improved and new tests have been implemented for Conway era.

Low level summary​

Conway​

  • pull-3858 - Restructure computing Refunds and Deposits in a TxBody across all eras
  • pull-3860 - Removed mock/crypto.cddl, added optional tag to sets
  • pull-3864 - Fix Proposal deposits and add deposit tests to imp tests
  • pull-3859 - Rename ProposalsSnapshot to Proposals
  • pull-3867 - MaryValue fixes
  • pull-3869 - Indicate that tag 258 is optional for OSet. Fix rational CDDL
  • pull-3863 - Improve deposits refunds re-usability
  • pull-3861 - Fail PParamsUpdate deserialization for invalid costmodels in Conway
  • pull-3875 - Fix cddl spec for CostModels in Conway
  • pull-3876 - Change 4 PParam fields from EpochNo to EpochInterval
  • pull-3884 - Relax requirement on the Set tag 258 to be enforced in the next era

Testing​

  • pull-3868 - Improvements to support property tests on Traces with simple Tx with DRep related Certs
  • pull-3792 - RATIFY and GOV constraint tests
  • pull-3885 - Added a test for genTxAndNewEpoch
  • pull-3886 - QuickCheck Imp integration

Improvements and releasing​