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Test Results for hydra-cluster


  • does start on slot 0 with no genesis
  • does not start on slot 0 with real genesis file


Performance traces

  • generate trace for NewTx



  • invokes mithril-client correctly (Preview)
  • invokes mithril-client correctly (Preproduction)
  • invokes mithril-client correctly (Mainnet)



  • seedFromFaucet and returnFundsToFaucet work together


  • should work concurrently



  • cardano-cli can accept a draft commit tx in text-envelope format
  • has expected cardano-cli version available
  • query protocol-parameters is compatible with our FromJSON instance
  • query protocol-parameters matches our schema


  • generates a Dataset that keeps UTXO constant

    +++ OK, passed 100 tests.


  • End-to-end offline mode

End-to-end on Cardano devnet

forking eras

  • does report on unsupported era
  • does report on unsupported era on startup
  • support new era
  • support new era on restart

hydra-node executable

  • logs its command line arguments
  • logs to a logfile


  • Node exposes Prometheus metrics on port 6001

two hydra heads scenario

  • two heads on the same network do not conflict
  • alice inits a Head with incorrect keys preventing bob from observing InitTx
  • bob cannot abort alice's head

restarting nodes

  • can abort head after restart
  • can observe a commit tx after a restart, even when a tx happened while down
  • prevent resuming a head after reconfiguring a peer
  • can start chain from the past and replay on-chain events
  • close of an initial snapshot from re-initialized node is contested

three hydra nodes scenario

  • does not error when all nodes open the head concurrently
  • inits a Head, processes a single Cardano transaction and closes it again
  • inits a Head and closes it immediately

single party hydra head

  • full head life-cycle
  • can close with long deadline
  • can submit a timed tx
  • commits from external with script utxo
  • commit external wallet utxo with inline datum in the script
  • can't commit externally with internal wallet utxo
  • can submit a signed user transaction


  • can init and abort a head given nothing has been committed
  • can init and abort a 2-parties head after one party has committed
  • cannot abort a non-participating head
  • can commit
  • can commit empty UTxO
  • can open, close & fanout a Head
  • can restart head to point in the past and replay on-chain events
  • cannot restart head to an unknown point
  • can publish and query reference scripts in a timely manner
  • can only contest once


  • can observe hydra transactions created by hydra-nodes


  • has expected cardano-node version available
  • withCardanoNodeDevnet does start a block-producing devnet within 5 seconds
  • withCardanoNodeOnKnownNetwork on mainnet starts synchronizing within 5 seconds


  • queryGenesisParameters works as expected