test: consistent appHash between commits (#3513)

## Overview

Fixes #2414 

### This test is split up in a few parts:

- Execute transactions deterministically on v1 and save the AppHash.
celestiaorg/celestia-app#3522 ([includes genesis
folder backport from
utils](celestiaorg/celestia-app#3520))
- Set up the same testApp environment on main, execute transactions and
assert that the AppHash matches the one from v1

### Verifying the AppHash: 

If you want to make sure that the expected AppHash is correct, you can
run the [non determinism test on
v1.x](celestiaorg/celestia-app#3522) that
generates it.

### Follow-ups:
#3509 
celestiaorg/celestia-app#3540

---------

Co-authored-by: Rootul P <rootulp@gmail.com>

app/test/consistent_apphash_test.go

@@ -0,0 +1,173 @@
+package app_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/celestiaorg/celestia-app/v2/app"
+	"github.com/celestiaorg/celestia-app/v2/app/encoding"
+	"github.com/celestiaorg/celestia-app/v2/pkg/appconsts"
+	"github.com/celestiaorg/celestia-app/v2/pkg/user"
+	testutil "github.com/celestiaorg/celestia-app/v2/test/util"
+	"github.com/celestiaorg/celestia-app/v2/test/util/blobfactory"
+	"github.com/celestiaorg/go-square/blob"
+	appns "github.com/celestiaorg/go-square/namespace"
+	"github.com/cosmos/cosmos-sdk/codec"
+	"github.com/cosmos/cosmos-sdk/crypto/hd"
+	"github.com/cosmos/cosmos-sdk/crypto/keyring"
+	"github.com/cosmos/cosmos-sdk/crypto/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
+	"github.com/stretchr/testify/require"
+	abci "github.com/tendermint/tendermint/abci/types"
+	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
+	"github.com/tendermint/tendermint/proto/tendermint/version"
+)
+
+type SdkTx struct {
+	sdkMsgs   []sdk.Msg
+	txOptions []user.TxOption
+}
+
+type BlobTx struct {
+	author    string
+	blobs     []*blob.Blob
+	txOptions []user.TxOption
+}
+
+// TestConsistentAppHash executes a set of txs, generates an app hash,
+// and compares it against a previously generated hash from the same set of transactions.
+// App hashes across different commits should be consistent.
+func TestConsistentAppHash(t *testing.T) {
+	// Expected app hash produced by v1.x - TODO: link to the test producing the hash
+	expectedAppHash := []byte{9, 208, 117, 101, 108, 61, 146, 58, 26, 190, 199, 124, 76, 178, 84, 74, 54, 159, 76, 187, 2, 169, 128, 87, 70, 78, 8, 192, 28, 144, 116, 117}
+
+	// Initialize testApp
+	testApp := testutil.NewTestApp()
+
+	enc := encoding.MakeConfig(app.ModuleEncodingRegisters...)
+	// Create deterministic keys
+	kr, pubKeys := deterministicKeyRing(enc.Codec)
+
+	recs, err := kr.List()
+	require.NoError(t, err)
+	accountNames := make([]string, 0, len(recs))
+
+	// Get the name of the records
+	for _, rec := range recs {
+		accountNames = append(accountNames, rec.Name)
+	}
+
+	// Apply genesis state to the app.
+	_, _, err = testutil.SetupDeterministicGenesisState(testApp, pubKeys, 1_000_000_000, app.DefaultInitialConsensusParams())
+	require.NoError(t, err)
+
+	// Query keyring account infos
+	accountInfos := queryAccountInfo(testApp, accountNames, kr)
+
+	// Create accounts for the signer
+	accounts := make([]*user.Account, 0, len(accountInfos))
+	for i, accountInfo := range accountInfos {
+		account := user.NewAccount(accountNames[i], accountInfo.AccountNum, accountInfo.Sequence)
+		accounts = append(accounts, account)
+	}
+
+	// Create a signer with keyring accounts
+	signer, err := user.NewSigner(kr, enc.TxConfig, testutil.ChainID, app.DefaultInitialVersion, accounts...)
+	require.NoError(t, err)
+
+	amount := sdk.NewCoins(sdk.NewCoin(app.BondDenom, sdk.NewIntFromUint64(1000)))
+
+	// Create an SDK Tx
+	sdkTx := SdkTx{
+		sdkMsgs: []sdk.Msg{
+			banktypes.NewMsgSend(signer.Account(accountNames[0]).Address(),
+				signer.Account(accountNames[1]).Address(),
+				amount),
+		},
+		txOptions: blobfactory.DefaultTxOpts(),
+	}
+
+	// Create a Blob Tx
+	blobTx := BlobTx{
+		author:    accountNames[2],
+		blobs:     []*blob.Blob{blob.New(fixedNamespace(), []byte{1}, appconsts.DefaultShareVersion)},
+		txOptions: blobfactory.DefaultTxOpts(),
+	}
+
+	// Create SDK Tx
+	rawSdkTx, err := signer.CreateTx(sdkTx.sdkMsgs, sdkTx.txOptions...)
+	require.NoError(t, err)
+
+	// Create Blob Tx
+	rawBlobTx, _, err := signer.CreatePayForBlobs(blobTx.author, blobTx.blobs, blobTx.txOptions...)
+	require.NoError(t, err)
+
+	// BeginBlock
+	header := tmproto.Header{
+		Version: version.Consensus{App: 1},
+		Height:  testApp.LastBlockHeight() + 1,
+	}
+	testApp.BeginBlock(abci.RequestBeginBlock{Header: header})
+
+	// Deliver SDK Tx
+	resp := testApp.DeliverTx(abci.RequestDeliverTx{Tx: rawSdkTx})
+	require.EqualValues(t, 0, resp.Code, resp.Log)
+
+	// Deliver Blob Tx
+	blob, isBlobTx := blob.UnmarshalBlobTx(rawBlobTx)
+	require.True(t, isBlobTx)
+	resp = testApp.DeliverTx(abci.RequestDeliverTx{Tx: blob.Tx})
+	require.EqualValues(t, 0, resp.Code, resp.Log)
+
+	// EndBlock
+	testApp.EndBlock(abci.RequestEndBlock{Height: header.Height})
+
+	// Commit the state
+	testApp.Commit()
+
+	// Get the app hash
+	appHash := testApp.LastCommitID().Hash
+
+	// Require that the app hash is equal to the app hash produced on a different commit
+	require.Equal(t, expectedAppHash, appHash)
+}
+
+// fixedNamespace returns a hardcoded namespace
+func fixedNamespace() appns.Namespace {
+	return appns.Namespace{
+		Version: 0,
+		ID:      []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 37, 67, 154, 200, 228, 130, 74, 147, 162, 11},
+	}
+}
+
+// deterministicKeyRing returns a deterministic keyring and a list of deterministic public keys
+func deterministicKeyRing(cdc codec.Codec) (keyring.Keyring, []types.PubKey) {
+	mnemonics := []string{
+		"great myself congress genuine scale muscle view uncover pipe miracle sausage broccoli lonely swap table foam brand turtle comic gorilla firm mad grunt hazard",
+		"cheap job month trigger flush cactus chest juice dolphin people limit crunch curious secret object beach shield snake hunt group sketch cousin puppy fox",
+		"oil suffer bamboo one better attack exist dolphin relief enforce cat asset raccoon lava regret found love certain plunge grocery accuse goat together kiss",
+		"giraffe busy subject doll jump drama sea daring again club spend toe mind organ real liar permit refuse change opinion donkey job cricket speed",
+		"fee vapor thing fish fan memory negative raven cram win quantum ozone job mirror shoot sting quiz black apart funny sort cancel friend curtain",
+		"skin beef review pilot tooth act any alarm there only kick uniform ticket material cereal radar ethics list unlock method coral smooth street frequent",
+		"ecology scout core guard load oil school effort near alcohol fancy save cereal owner enforce impact sand husband trophy solve amount fish festival sell",
+		"used describe angle twin amateur pyramid bitter pool fluid wing erode rival wife federal curious drink battle put elbow mandate another token reveal tone",
+		"reason fork target chimney lift typical fine divorce mixture web robot kiwi traffic stove miss crane welcome camp bless fuel october riot pluck ordinary",
+		"undo logic mobile modify master force donor rose crumble forget plate job canal waste turn damp sure point deposit hazard quantum car annual churn",
+		"charge subway treat loop donate place loan want grief leg message siren joy road exclude match empty enforce vote meadow enlist vintage wool involve",
+	}
+	kb := keyring.NewInMemory(cdc)
+	pubKeys := make([]types.PubKey, len(mnemonics))
+	for idx, mnemonic := range mnemonics {
+		rec, err := kb.NewAccount(fmt.Sprintf("account-%d", idx), mnemonic, "", "", hd.Secp256k1)
+		if err != nil {
+			panic(err)
+		}
+		pubKey, err := rec.GetPubKey()
+		if err != nil {
+			panic(err)
+		}
+		pubKeys[idx] = pubKey
+	}
+	return kb, pubKeys
+}

test/e2e/testnet/testnet.go

@@ -75,7 +75,7 @@ func (t *Testnet) CreateGenesisNode(version string, selfDelegation, upgradeHeigh
 	if err != nil {
 		return err
 	}
-	if err := t.genesis.AddValidator(node.GenesisValidator()); err != nil {
+	if err := t.genesis.NewValidator(node.GenesisValidator()); err != nil {
 		return err
 	}
 	t.nodes = append(t.nodes, node)

test/util/genesis/genesis.go

@@ -44,6 +44,21 @@ type Genesis struct {
 	genOps []Modifier
 }
 
+// Accounts getter
+func (g *Genesis) Accounts() []Account {
+	return g.accounts
+}
+
+// Keyring getter
+func (g *Genesis) Keyring() keyring.Keyring {
+	return g.kr
+}
+
+// Validators getter
+func (g *Genesis) Validators() []Validator {
+	return g.validators
+}
+
 // NewDefaultGenesis creates a new default genesis with no accounts or validators.
 func NewDefaultGenesis() *Genesis {
 	ecfg := encoding.MakeConfig(app.ModuleBasics)
@@ -58,29 +73,34 @@ func NewDefaultGenesis() *Genesis {
 	return g
 }
 
+// WithModifier adds a genesis modifier to the genesis.
 func (g *Genesis) WithModifiers(ops ...Modifier) *Genesis {
 	g.genOps = append(g.genOps, ops...)
 	return g
 }
 
+// WithConsensusParams sets the consensus parameters of the genesis.
 func (g *Genesis) WithConsensusParams(params *tmproto.ConsensusParams) *Genesis {
 	g.ConsensusParams = params
 	return g
 }
 
+// WithChainID sets the chain ID of the genesis.
 func (g *Genesis) WithChainID(chainID string) *Genesis {
 	g.ChainID = chainID
 	return g
 }
 
+// WithGenesisTime sets the genesis time of the genesis.
 func (g *Genesis) WithGenesisTime(genesisTime time.Time) *Genesis {
 	g.GenesisTime = genesisTime
 	return g
 }
 
+// WithAccounts adds the given validators to the genesis.
 func (g *Genesis) WithValidators(vals ...Validator) *Genesis {
 	for _, val := range vals {
-		err := g.AddValidator(val)
+		err := g.NewValidator(val)
 		if err != nil {
 			panic(err)
 		}
@@ -100,6 +120,7 @@ func (g *Genesis) WithKeyringAccounts(accs ...KeyringAccount) *Genesis {
 	return g
 }
 
+// AddAccount adds an existing account to the genesis.
 func (g *Genesis) AddAccount(account Account) error {
 	for _, acc := range g.accounts {
 		if bytes.Equal(acc.PubKey.Bytes(), account.PubKey.Bytes()) {
@@ -110,6 +131,7 @@ func (g *Genesis) AddAccount(account Account) error {
 	return nil
 }
 
+// NewAccount creates a new account and adds it to the genesis.
 func (g *Genesis) NewAccount(acc KeyringAccount) error {
 	if err := acc.ValidateBasic(); err != nil {
 		return err
@@ -139,16 +161,12 @@ func (g *Genesis) NewAccount(acc KeyringAccount) error {
 	return nil
 }
 
+// AddValidator verifies and adds a given validator to the genesis.
 func (g *Genesis) AddValidator(val Validator) error {
 	if err := val.ValidateBasic(); err != nil {
 		return err
 	}
 
-	// Add the validator's genesis account
-	if err := g.NewAccount(val.KeyringAccount); err != nil {
-		return err
-	}
-
 	// Add the validator's genesis transaction
 	gentx, err := val.GenTx(g.ecfg, g.kr, g.ChainID)
 	if err != nil {
@@ -161,10 +179,17 @@ func (g *Genesis) AddValidator(val Validator) error {
 	return nil
 }
 
-func (g *Genesis) Accounts() []Account {
-	return g.accounts
+// Creates a new validator account and adds it to the genesis.
+func (g *Genesis) NewValidator(val Validator) error {
+	// Add the validator's genesis account
+	if err := g.NewAccount(val.KeyringAccount); err != nil {
+		return err
+	}
+
+	return g.AddValidator(val)
 }
 
+// Export returns the genesis document of the network.
 func (g *Genesis) Export() (*coretypes.GenesisDoc, error) {
 	gentxs := make([]json.RawMessage, 0, len(g.genTxs))
 	for _, genTx := range g.genTxs {
@@ -186,14 +211,6 @@ func (g *Genesis) Export() (*coretypes.GenesisDoc, error) {
 	)
 }
 
-func (g *Genesis) Keyring() keyring.Keyring {
-	return g.kr
-}
-
-func (g *Genesis) Validators() []Validator {
-	return g.validators
-}
-
 // Validator returns the validator at the given index. False is returned if the
 // index is out of bounds.
 func (g *Genesis) Validator(i int) (Validator, bool) {