internal/ethapi: add 7702 tests to eth_estimateGas

internal/ethapi/api_test.go

@@ -628,12 +628,14 @@ func TestEstimateGas(t *testing.T) {
 	t.Parallel()
 	// Initialize test accounts
 	var (
-		accounts = newAccounts(2)
+		accounts = newAccounts(4)
 		genesis  = &core.Genesis{
 			Config: params.MergedTestChainConfig,
 			Alloc: types.GenesisAlloc{
 				accounts[0].addr: {Balance: big.NewInt(params.Ether)},
 				accounts[1].addr: {Balance: big.NewInt(params.Ether)},
+				accounts[2].addr: {Balance: big.NewInt(params.Ether), Code: append(types.DelegationPrefix, accounts[3].addr.Bytes()...)},
+				// accounts[3].addr: {Code: []byte{byte(vm.ADDRESS), byte(vm.PUSH0), byte(vm.SSTORE)}},
 			},
 		}
 		genBlocks      = 10
@@ -758,6 +760,26 @@ func TestEstimateGas(t *testing.T) {
 			},
 			want: 21000,
 		},
+		// Should be able to send to an EIP-7702 delegated account.
+		{
+			blockNumber: rpc.LatestBlockNumber,
+			call: TransactionArgs{
+				From:  &accounts[0].addr,
+				To:    &accounts[2].addr,
+				Value: (*hexutil.Big)(big.NewInt(1)),
+			},
+			want: 21000,
+		},
+		// Should be able to send as EIP-7702 delegated account.
+		{
+			blockNumber: rpc.LatestBlockNumber,
+			call: TransactionArgs{
+				From:  &accounts[2].addr,
+				To:    &accounts[1].addr,
+				Value: (*hexutil.Big)(big.NewInt(1)),
+			},
+			want: 21000,
+		},
 	}
 	for i, tc := range testSuite {
 		result, err := api.EstimateGas(context.Background(), tc.call, &rpc.BlockNumberOrHash{BlockNumber: &tc.blockNumber}, &tc.overrides)