refactor: replace []byte(fmt.Sprintf) with fmt.Appendf

execution/stagedsync/exec3_parallel_test.go

@@ -188,7 +188,7 @@ func (t *testExecTask) Sender() accounts.Address {
 }
 
 func (t *testExecTask) Hash() common.Hash {
-	return common.BytesToHash([]byte(fmt.Sprintf("%d", t.TxIndex)))
+	return common.BytesToHash(fmt.Appendf(nil, "%d", t.TxIndex))
 }
 
 func (t *testExecTask) Dependencies() []int {

execution/stagedsync/testutil.go

@@ -74,7 +74,7 @@ func generateBlocks2(t *testing.T, from uint64, numberOfBlocks uint64, blockWrit
 			}
 			if blockNumber == 1 || updateIncarnation || difficulty == changeCodeIndepenentlyOfIncarnations {
 				if newAcc.Incarnation > 0 {
-					code := []byte(fmt.Sprintf("acc-code-%v", blockNumber))
+					code := fmt.Appendf(nil, "acc-code-%v", blockNumber)
 					codeHashValue, _ := common.HashData(code)
 					codeHash := accounts.InternCodeHash(codeHashValue)
 					if blockNumber >= from {

execution/state/versionmap_test.go

@@ -16,7 +16,7 @@ var randomness = rand.Intn(10) + 10
 
 // create test data for a given txIdx and incarnation
 func valueFor(txIdx, inc int) []byte {
-	return []byte(fmt.Sprintf("%ver:%ver:%ver", txIdx*5, txIdx+inc, inc*5))
+	return fmt.Appendf(nil, "%ver:%ver:%ver", txIdx*5, txIdx+inc, inc*5)
 }
 
 func getAddress(i int) accounts.Address {

execution/types/hashing_test.go

@@ -32,7 +32,7 @@ func genTransactions(n uint64) Transactions {
 	txs := Transactions{}
 
 	for i := uint64(0); i < n; i++ {
-		tx := NewTransaction(i, common.Address{}, uint256.NewInt(1000+i), 10+i, uint256.NewInt(1000+i), []byte(fmt.Sprintf("hello%d", i)))
+		tx := NewTransaction(i, common.Address{}, uint256.NewInt(1000+i), 10+i, uint256.NewInt(1000+i), fmt.Appendf(nil, "hello%d", i))
 		txs = append(txs, tx)
 	}