fix: operation simulation route in x/nft test (#12278)

testutil/sims/app_helpers.go

@@ -26,6 +26,12 @@ import (
 	stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types"
 )
 
+// SimAppChainID hardcoded chainID for simulation
+const (
+	DefaultGenTxGas = 10000000
+	SimAppChainID   = "simulation-app"
+)
+
 // DefaultConsensusParams defines the default Tendermint consensus params used in
 // SimApp testing.
 var DefaultConsensusParams = &tmproto.ConsensusParams{

testutil/sims/tx_helpers.go

@@ -0,0 +1,76 @@
+package sims
+
+import (
+	"math/rand"
+	"time"
+
+	"github.com/cosmos/cosmos-sdk/client"
+	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/types/simulation"
+	"github.com/cosmos/cosmos-sdk/types/tx/signing"
+	authsign "github.com/cosmos/cosmos-sdk/x/auth/signing"
+)
+
+// GenSignedMockTx generates a signed mock transaction.
+func GenSignedMockTx(txConfig client.TxConfig, msgs []sdk.Msg, feeAmt sdk.Coins, gas uint64, chainID string, accNums, accSeqs []uint64, priv ...cryptotypes.PrivKey) (sdk.Tx, error) {
+	sigs := make([]signing.SignatureV2, len(priv))
+
+	// create a random length memo
+	r := rand.New(rand.NewSource(time.Now().UnixNano()))
+
+	memo := simulation.RandStringOfLength(r, simulation.RandIntBetween(r, 0, 100))
+
+	signMode := txConfig.SignModeHandler().DefaultMode()
+
+	// 1st round: set SignatureV2 with empty signatures, to set correct
+	// signer infos.
+	for i, p := range priv {
+		sigs[i] = signing.SignatureV2{
+			PubKey: p.PubKey(),
+			Data: &signing.SingleSignatureData{
+				SignMode: signMode,
+			},
+			Sequence: accSeqs[i],
+		}
+	}
+
+	tx := txConfig.NewTxBuilder()
+	err := tx.SetMsgs(msgs...)
+	if err != nil {
+		return nil, err
+	}
+	err = tx.SetSignatures(sigs...)
+	if err != nil {
+		return nil, err
+	}
+	tx.SetMemo(memo)
+	tx.SetFeeAmount(feeAmt)
+	tx.SetGasLimit(gas)
+
+	// 2nd round: once all signer infos are set, every signer can sign.
+	for i, p := range priv {
+		signerData := authsign.SignerData{
+			Address:       sdk.AccAddress(p.PubKey().Address()).String(),
+			ChainID:       chainID,
+			AccountNumber: accNums[i],
+			Sequence:      accSeqs[i],
+			PubKey:        p.PubKey(),
+		}
+		signBytes, err := txConfig.SignModeHandler().GetSignBytes(signMode, signerData, tx.GetTx())
+		if err != nil {
+			panic(err)
+		}
+		sig, err := p.Sign(signBytes)
+		if err != nil {
+			panic(err)
+		}
+		sigs[i].Data.(*signing.SingleSignatureData).Signature = sig
+		err = tx.SetSignatures(sigs...)
+		if err != nil {
+			panic(err)
+		}
+	}
+
+	return tx.GetTx(), nil
+}