Add initial constitution in conway ImpTestState initialization

eras/conway/impl/CHANGELOG.md

@@ -52,6 +52,7 @@
 
 ### `testlib`
 
+* Add `getConstitution` to Conway ImpTest
 * Change return type of `setupSingleDRep` to Credential instead of KeyHash
 * Add `registerInitialCommittee` and `getCommitteeMembers` to Conway ImpTest
 * Implement `ConwayUtxowPredFailure` instances:

eras/conway/impl/testlib/Test/Cardano/Ledger/Conway/Imp/EnactSpec.hs

@@ -281,6 +281,7 @@ constitutionSpec =
     (committeeMember :| _) <- registerInitialCommittee
     (dRep, _, _) <- setupSingleDRep 1_000_000
     (govActionId, constitution) <- submitConstitution SNothing
+    initialConstitution <- getConstitution
 
     proposalsBeforeVotes <- getsNES $ newEpochStateGovStateL . proposalsGovStateL
     pulserBeforeVotes <- getsNES newEpochStateDRepPulsingStateL
@@ -312,7 +313,7 @@ constitutionSpec =
 
     impAnn "New constitution is not enacted after one epoch" $ do
       constitutionAfterOneEpoch <- getsNES $ newEpochStateGovStateL . constitutionGovStateL
-      constitutionAfterOneEpoch `shouldBe` def
+      constitutionAfterOneEpoch `shouldBe` initialConstitution
 
     impAnn "Pulser should reflect the constitution to be enacted" $ do
       pulser <- getsNES newEpochStateDRepPulsingStateL

eras/conway/impl/testlib/Test/Cardano/Ledger/Conway/Imp/EpochSpec.hs

@@ -12,20 +12,13 @@
 module Test.Cardano.Ledger.Conway.Imp.EpochSpec (spec) where
 
 import Cardano.Ledger.Address (RewardAccount (..))
-import Cardano.Ledger.BaseTypes (EpochInterval (..), EpochNo (..), textToUrl)
+import Cardano.Ledger.BaseTypes (EpochInterval (..), EpochNo (..))
 import Cardano.Ledger.Coin
 import Cardano.Ledger.Conway.Core
 import Cardano.Ledger.Conway.Governance
 import Cardano.Ledger.Conway.Rules (ConwayEpochEvent (GovInfoEvent), ConwayNewEpochEvent (..))
 import Cardano.Ledger.Credential (Credential (..))
-import Cardano.Ledger.Shelley.LedgerState (
-  asTreasuryL,
-  curPParamsEpochStateL,
-  epochStateGovStateL,
-  esAccountStateL,
-  nesEpochStateL,
-  nesEsL,
- )
+import Cardano.Ledger.Shelley.LedgerState
 import Cardano.Ledger.Shelley.Rules (Event, ShelleyTickEvent (..))
 import Cardano.Ledger.Val
 import Control.Monad.Writer (listen)
@@ -34,7 +27,6 @@ import Data.Default.Class (Default (..))
 import Data.List.NonEmpty (NonEmpty (..))
 import qualified Data.List.NonEmpty as NE
 import qualified Data.Map.Strict as Map
-import Data.Maybe (fromJust)
 import Data.Maybe.Strict (StrictMaybe (..))
 import qualified Data.Sequence.Strict as SSeq
 import qualified Data.Set as Set
@@ -189,22 +181,14 @@ dRepSpec =
       logStakeDistr
       passEpoch
     it "constitution is accepted after two epochs" $ do
-      constitutionHash <- freshSafeHash
-      let
-        constitutionAction =
-          NewConstitution
-            SNothing
-            ( Constitution
-                ( Anchor
-                    (fromJust $ textToUrl 64 "constitution.0")
-                    constitutionHash
-                )
-                SNothing
-            )
+      initialConstitution <- getConstitution
+      newAnchor <- arbitrary
+      let proposedConstitution = Constitution newAnchor SNothing
+
       -- Submit NewConstitution proposal two epoch too early to check that the action
       -- doesn't expire prematurely (ppGovActionLifetimeL is set to two epochs)
       logEntry "Submitting new constitution"
-      gaidConstitutionProp <- submitGovAction constitutionAction
+      gaidConstitutionProp <- submitGovAction $ NewConstitution SNothing proposedConstitution
 
       (committeeHotCred :| _) <- registerInitialCommittee
       (dRepCred, _, _) <- setupSingleDRep 1_000_000
@@ -226,10 +210,9 @@ dRepSpec =
         assertBool "Gov action should be accepted" isAccepted
       logAcceptedRatio gaidConstitutionProp
       logRatificationChecks gaidConstitutionProp
-      constitutionShouldBe ""
-
+      getConstitution `shouldReturn` initialConstitution
       passEpoch
-      constitutionShouldBe "constitution.0"
+      getConstitution `shouldReturn` proposedConstitution
 
 treasurySpec ::
   forall era.

eras/conway/impl/testlib/Test/Cardano/Ledger/Conway/ImpTest.hs

@@ -58,6 +58,7 @@ module Test.Cardano.Ledger.Conway.ImpTest (
   isSpoAccepted,
   isCommitteeAccepted,
   getCommitteeMembers,
+  getConstitution,
   registerInitialCommittee,
   logRatificationChecks,
   resignCommitteeColdKey,
@@ -227,11 +228,13 @@ instance
   ShelleyEraImp (ConwayEra c)
   where
   initImpTestState = do
-    kh <- fst <$> freshKeyPairA$
+    kh <- fst <$> freshKeyPair
     let committee = Committee [(KeyHashObj kh, EpochNo 15)] (1 %! 1)
-    impNESL %= initConwayNES committee
+    anchor <- arbitrary
+    let constitution = Constitution anchor SNothing
+    impNESL %= initConwayNES committee constitution
     where
-      initConwayNES committee nes =
+      initConwayNES committee constitution nes =
         let newNes =
               (initAlonzoImpNES nes)
                 & nesEsL . curPParamsEpochStateL . ppDRepActivityL .~ EpochInterval 100
@@ -248,6 +251,7 @@ instance
                           }
                      )
                 & nesEsL . epochStateGovStateL . committeeGovStateL .~ SJust committee
+                & nesEsL . epochStateGovStateL . constitutionGovStateL .~ constitution
             epochState = newNes ^. nesEsL
             ratifyState =
               def
@@ -709,6 +713,12 @@ getLastEnactedCommittee = do
   ps <- getProposals
   pure $ ps ^. pRootsL . grCommitteeL . prRootL
 
+getConstitution ::
+  ConwayEraImp era =>
+  ImpTestM era (Constitution era)
+getConstitution =
+  getsNES $ nesEsL . esLStateL . lsUTxOStateL . utxosGovStateL . constitutionGovStateL
+
 getLastEnactedConstitution ::
   ConwayEraGov era => ImpTestM era (StrictMaybe (GovPurposeId 'ConstitutionPurpose era))
 getLastEnactedConstitution = do