Parameterize values in transfer tests (#4144)

Author: RodrigoVillar

tests/load/tests.go

@@ -76,11 +76,13 @@ func NewRandomTest(
 		// writes, or computes) for a test that supports repeated operations.
 		// This value is arbitrary but kept constant to ensure test reproducibility.
 		count = big.NewInt(5)
+		// value specifies the amount to send in a transfer test
+		value = big.NewInt(1)
 	)
 
 	weightedTests := []WeightedTest{
 		{
-			Test:   ZeroTransferTest{},
+			Test:   TransferTest{Value: value},
 			Weight: weight,
 		},
 		{
@@ -227,9 +229,11 @@ type WeightedTest struct {
 	Weight uint64
 }
 
-type ZeroTransferTest struct{}
+type TransferTest struct {
+	Value *big.Int
+}
 
-func (ZeroTransferTest) Run(
+func (t TransferTest) Run(
 	tc tests.TestContext,
 	ctx context.Context,
 	wallet *Wallet,
@@ -241,16 +245,21 @@ func (ZeroTransferTest) Run(
 	bigGwei := big.NewInt(params.GWei)
 	gasTipCap := new(big.Int).Mul(bigGwei, big.NewInt(1))
 	gasFeeCap := new(big.Int).Mul(bigGwei, maxFeeCap)
-	senderAddress := crypto.PubkeyToAddress(wallet.privKey.PublicKey)
+
+	// Generate non-existent account address
+	pk, err := crypto.GenerateKey()
+	require.NoError(err)
+	recipient := crypto.PubkeyToAddress(pk.PublicKey)
+
 	tx, err := types.SignNewTx(wallet.privKey, wallet.signer, &types.DynamicFeeTx{
 		ChainID:   wallet.chainID,
 		Nonce:     wallet.nonce,
 		GasTipCap: gasTipCap,
 		GasFeeCap: gasFeeCap,
 		Gas:       params.TxGas,
-		To:        &senderAddress,
+		To:        &recipient,
 		Data:      nil,
-		Value:     common.Big0,
+		Value:     t.Value,
 	})
 	require.NoError(err)