Test EstimateRetryableTicket With No Funds And Zero GasPrice

system_tests/retryable_test.go

@@ -131,6 +131,48 @@ func TestRetryableNoExist(t *testing.T) {
 	}
 }
 
+func TestEstimateRetryableTicketWithNoFundsAndZeroGas(t *testing.T) {
+	t.Parallel()
+	builder, _, _, ctx, teardown := retryableSetup(t)
+	defer teardown()
+
+	user2Address := builder.L2Info.GetAddress("User2")
+	beneficiaryAddress := builder.L2Info.GetAddress("Beneficiary")
+
+	deposit := arbmath.BigMul(big.NewInt(1e12), big.NewInt(1e12))
+	callValue := big.NewInt(1e6)
+
+	nodeInterface, err := node_interfacegen.NewNodeInterface(types.NodeInterfaceAddress, builder.L2.Client)
+	Require(t, err, "failed to deploy NodeInterface")
+
+	// estimate the gas needed to auto redeem the retryable
+	builder.L2Info.GenerateAccount("zerofunds")
+	usertxoptsL2 := builder.L2Info.GetDefaultTransactOpts("zerofunds", ctx)
+	usertxoptsL2.NoSend = true
+	usertxoptsL2.GasMargin = 0
+	usertxoptsL2.GasPrice = big.NewInt(0)
+	tx, err := nodeInterface.EstimateRetryableTicket(
+		&usertxoptsL2,
+		usertxoptsL2.From,
+		deposit,
+		user2Address,
+		callValue,
+		beneficiaryAddress,
+		beneficiaryAddress,
+		[]byte{0x32, 0x42, 0x32, 0x88}, // increase the cost to beyond that of params.TxGas
+	)
+	Require(t, err, "failed to estimate retryable submission")
+	estimate := tx.Gas()
+	expectedEstimate := params.TxGas + params.TxDataNonZeroGasEIP2028*4
+	if float64(estimate) > float64(expectedEstimate)*(1+gasestimator.EstimateGasErrorRatio) {
+		t.Errorf("estimated retryable ticket at %v gas but expected %v, with error margin of %v",
+			estimate,
+			expectedEstimate,
+			gasestimator.EstimateGasErrorRatio,
+		)
+	}
+}
+
 func TestSubmitRetryableImmediateSuccess(t *testing.T) {
 	t.Parallel()
 	builder, delayedInbox, lookupL2Tx, ctx, teardown := retryableSetup(t)