core/types: only compute receipts bloom once

core/types/receipt_test.go

@@ -22,6 +22,7 @@ import (
 	"math"
 	"math/big"
 	"reflect"
+	"sync"
 	"testing"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -154,9 +155,17 @@ var (
 	blockNumber = big.NewInt(1)
 	blockTime   = uint64(2)
 	blockHash   = common.BytesToHash([]byte{0x03, 0x14})
+)
 
+var receiptsOnce sync.Once
+var testReceipts Receipts
+
+func getTestReceipts() Receipts {
+
+	// Compute the blooms only once
+	receiptsOnce.Do(func() {
 		// Create the corresponding receipts
-	receipts = Receipts{
+		r := Receipts{
 			&Receipt{
 				Status:            ReceiptStatusFailed,
 				CumulativeGasUsed: 1,
@@ -294,13 +303,12 @@ var (
 				TransactionIndex:  6,
 			},
 		}
-)
-
-func init() {
-	// Correctly compute the bloom filters
-	for _, receipt := range receipts {
+		for _, receipt := range r {
 			receipt.Bloom = CreateBloom(Receipts{receipt})
 		}
+		testReceipts = r
+	})
+	return testReceipts
 }
 
 func TestDecodeEmptyTypedReceipt(t *testing.T) {
@@ -317,6 +325,7 @@ func TestDeriveFields(t *testing.T) {
 	// Re-derive receipts.
 	basefee := big.NewInt(1000)
 	blobGasPrice := big.NewInt(920)
+	receipts := getTestReceipts()
 	derivedReceipts := clearComputedFieldsOnReceipts(receipts)
 	err := Receipts(derivedReceipts).DeriveFields(params.TestChainConfig, blockHash, blockNumber.Uint64(), blockTime, basefee, blobGasPrice, txs)
 	if err != nil {
@@ -342,6 +351,7 @@ func TestDeriveFields(t *testing.T) {
 // Test that we can marshal/unmarshal receipts to/from json without errors.
 // This also confirms that our test receipts contain all the required fields.
 func TestReceiptJSON(t *testing.T) {
+	receipts := getTestReceipts()
 	for i := range receipts {
 		b, err := receipts[i].MarshalJSON()
 		if err != nil {
@@ -358,6 +368,7 @@ func TestReceiptJSON(t *testing.T) {
 // Test we can still parse receipt without EffectiveGasPrice for backwards compatibility, even
 // though it is required per the spec.
 func TestEffectiveGasPriceNotRequired(t *testing.T) {
+	receipts := getTestReceipts()
 	r := *receipts[0]
 	r.EffectiveGasPrice = nil
 	b, err := r.MarshalJSON()