op-e2e: bridge erc20 test

Adds a test for bridging an ERC20 token through the
L1StandardBridge

op-e2e/bridge_test.go

+package op_e2e
+
+import (
+	"math"
+	"math/big"
+	"testing"
+	"time"
+
+	"github.com/ethereum-optimism/optimism/op-bindings/bindings"
+	"github.com/ethereum-optimism/optimism/op-bindings/predeploys"
+	"github.com/ethereum-optimism/optimism/op-node/rollup/derive"
+	"github.com/ethereum-optimism/optimism/op-node/testlog"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/params"
+	"github.com/stretchr/testify/require"
+)
+
+// TestERC20BridgeDeposits tests the the L1StandardBridge bridge ERC20
+// functionality.
+func TestERC20BridgeDeposits(t *testing.T) {
+	parallel(t)
+	if !verboseGethNodes {
+		log.Root().SetHandler(log.DiscardHandler())
+	}
+
+	cfg := DefaultSystemConfig(t)
+
+	sys, err := cfg.Start()
+	require.Nil(t, err, "Error starting up system")
+	defer sys.Close()
+
+	log := testlog.Logger(t, log.LvlInfo)
+	log.Info("genesis", "l2", sys.RollupConfig.Genesis.L2, "l1", sys.RollupConfig.Genesis.L1, "l2_time", sys.RollupConfig.Genesis.L2Time)
+
+	l1Client := sys.Clients["l1"]
+	l2Client := sys.Clients["sequencer"]
+
+	opts, err := bind.NewKeyedTransactorWithChainID(sys.cfg.Secrets.Alice, cfg.L1ChainIDBig())
+	require.Nil(t, err)
+
+	// Deploy WETH9
+	weth9Address, tx, WETH9, err := bindings.DeployWETH9(opts, l1Client)
+	_, err = waitForTransaction(tx.Hash(), l1Client, 3*time.Duration(cfg.DeployConfig.L1BlockTime)*time.Second)
+	require.Nil(t, err, "Waiting for deposit tx on L1")
+
+	// Get some WETH
+	opts.Value = big.NewInt(params.Ether)
+	tx, err = WETH9.Fallback(opts, []byte{})
+	require.Nil(t, err)
+	_, err = waitForTransaction(tx.Hash(), l1Client, 3*time.Duration(cfg.DeployConfig.L1BlockTime)*time.Second)
+	require.Nil(t, err)
+	opts.Value = nil
+	wethBalance, err := WETH9.BalanceOf(&bind.CallOpts{}, opts.From)
+	require.Equal(t, big.NewInt(params.Ether), wethBalance)
+
+	// Deploy L2 WETH9
+	l2Opts, err := bind.NewKeyedTransactorWithChainID(sys.cfg.Secrets.Alice, cfg.L2ChainIDBig())
+	require.Nil(t, err)
+	optimismMintableTokenFactory, err := bindings.NewOptimismMintableERC20Factory(predeploys.OptimismMintableERC20FactoryAddr, l2Client)
+	require.Nil(t, err)
+	tx, err = optimismMintableTokenFactory.CreateOptimismMintableERC20(l2Opts, weth9Address, "L2-WETH", "L2-WETH")
+	_, err = waitForTransaction(tx.Hash(), l2Client, 3*time.Duration(cfg.DeployConfig.L2BlockTime)*time.Second)
+
+	// Get the deployment event to have access to the L2 WETH9 address
+	it, err := optimismMintableTokenFactory.FilterOptimismMintableERC20Created(&bind.FilterOpts{Start: 0}, nil, nil)
+	require.Nil(t, err)
+	var event *bindings.OptimismMintableERC20FactoryOptimismMintableERC20Created
+	for it.Next() {
+		event = it.Event
+	}
+	require.NotNil(t, event)
+
+	// Approve WETH9 with the bridge
+	tx, err = WETH9.Approve(opts, predeploys.DevL1StandardBridgeAddr, new(big.Int).SetUint64(math.MaxUint64))
+	require.Nil(t, err)
+	_, err = waitForTransaction(tx.Hash(), l1Client, 3*time.Duration(cfg.DeployConfig.L1BlockTime)*time.Second)
+	require.Nil(t, err)
+
+	// Bridge the WETH9
+	l1StandardBridge, err := bindings.NewL1StandardBridge(predeploys.DevL1StandardBridgeAddr, l1Client)
+	require.Nil(t, err)
+	tx, err = l1StandardBridge.BridgeERC20(opts, weth9Address, event.LocalToken, big.NewInt(100), 100000, []byte{})
+	require.Nil(t, err)
+	depositReceipt, err := waitForTransaction(tx.Hash(), l1Client, 3*time.Duration(cfg.DeployConfig.L1BlockTime)*time.Second)
+	require.Nil(t, err)
+
+	t.Log("Deposit through L1StandardBridge", "gas used", depositReceipt.GasUsed)
+
+	// compute the deposit transaction hash + poll for it
+	portal, err := bindings.NewOptimismPortal(predeploys.DevOptimismPortalAddr, l1Client)
+	require.Nil(t, err)
+
+	depIt, err := portal.FilterTransactionDeposited(&bind.FilterOpts{Start: 0}, nil, nil, nil)
+	require.Nil(t, err)
+	var depositEvent *bindings.OptimismPortalTransactionDeposited
+	for depIt.Next() {
+		depositEvent = depIt.Event
+	}
+	require.NotNil(t, depositEvent)
+
+	depositTx, err := derive.UnmarshalDepositLogEvent(&depositEvent.Raw)
+	require.Nil(t, err)
+	_, err = waitForTransaction(types.NewTx(depositTx).Hash(), l2Client, 3*time.Duration(cfg.DeployConfig.L2BlockTime)*time.Second)
+
+	// Ensure that the deposit went through
+	optimismMintableToken, err := bindings.NewOptimismMintableERC20(event.LocalToken, l2Client)
+	require.Nil(t, err)
+
+	// Should have balance on L2
+	l2Balance, err := optimismMintableToken.BalanceOf(&bind.CallOpts{}, opts.From)
+	require.Nil(t, err)
+	require.Equal(t, l2Balance, big.NewInt(100))
+}