• Sabnock01's avatar
    chore: RPC client cleanup · 49d82402
    Sabnock01 authored
    squashed in:
    - fix: resolve circular dependency
    - lint
    - move rollupclient to sources
    - fix imports
    49d82402
system_tob_test.go 30.3 KB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727
package op_e2e

import (
	"bytes"
	"context"
	"crypto/ecdsa"
	"fmt"
	"math/big"
	"math/rand"
	"testing"
	"time"

	"github.com/ethereum-optimism/optimism/op-bindings/bindings"
	"github.com/ethereum-optimism/optimism/op-bindings/predeploys"
	"github.com/ethereum-optimism/optimism/op-e2e/e2eutils"
	"github.com/ethereum-optimism/optimism/op-e2e/e2eutils/geth"
	"github.com/ethereum-optimism/optimism/op-e2e/e2eutils/wait"
	"github.com/ethereum-optimism/optimism/op-node/withdrawals"
	"github.com/ethereum-optimism/optimism/op-service/testutils/fuzzerutils"
	"github.com/ethereum/go-ethereum/accounts"
	"github.com/ethereum/go-ethereum/accounts/abi"
	"github.com/ethereum/go-ethereum/accounts/abi/bind"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/core/types"
	"github.com/ethereum/go-ethereum/crypto"
	"github.com/ethereum/go-ethereum/ethclient"
	"github.com/ethereum/go-ethereum/ethclient/gethclient"
	"github.com/ethereum/go-ethereum/params"
	"github.com/ethereum/go-ethereum/rpc"
	fuzz "github.com/google/gofuzz"
	"github.com/stretchr/testify/require"
)

// TestGasPriceOracleFeeUpdates checks that the gas price oracle cannot be locked by mis-configuring parameters.
func TestGasPriceOracleFeeUpdates(t *testing.T) {
	InitParallel(t)
	// Define our values to set in the GasPriceOracle (we set them high to see if it can lock L2 or stop bindings
	// from updating the prices once again.
	overheadValue := abi.MaxUint256
	scalarValue := abi.MaxUint256
	var cancel context.CancelFunc

	// Create our system configuration for L1/L2 and start it
	cfg := DefaultSystemConfig(t)
	sys, err := cfg.Start(t)
	require.Nil(t, err, "Error starting up system")
	defer sys.Close()

	// Obtain our sequencer, verifier, and transactor keypair.
	l1Client := sys.Clients["l1"]
	l2Seq := sys.Clients["sequencer"]
	// l2Verif := sys.Clients["verifier"]
	ethPrivKey := cfg.Secrets.SysCfgOwner

	// Bind to the SystemConfig & GasPriceOracle contracts
	sysconfig, err := bindings.NewSystemConfig(cfg.L1Deployments.SystemConfigProxy, l1Client)
	require.Nil(t, err)
	gpoContract, err := bindings.NewGasPriceOracleCaller(predeploys.GasPriceOracleAddr, l2Seq)
	require.Nil(t, err)

	// Obtain our signer.
	opts, err := bind.NewKeyedTransactorWithChainID(ethPrivKey, cfg.L1ChainIDBig())
	require.Nil(t, err)

	// Define our L1 transaction timeout duration.
	txTimeoutDuration := 10 * time.Duration(cfg.DeployConfig.L1BlockTime) * time.Second

	// Update the gas config, wait for it to show up on L2, & verify that it was set as intended
	opts.Context, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
	tx, err := sysconfig.SetGasConfig(opts, overheadValue, scalarValue)
	cancel()
	require.Nil(t, err, "sending overhead update tx")

	receipt, err := geth.WaitForTransaction(tx.Hash(), l1Client, txTimeoutDuration)
	require.Nil(t, err, "waiting for sysconfig set gas config update tx")
	require.Equal(t, receipt.Status, types.ReceiptStatusSuccessful, "transaction failed")

	_, err = geth.WaitForL1OriginOnL2(receipt.BlockNumber.Uint64(), l2Seq, txTimeoutDuration)
	require.NoError(t, err, "waiting for L2 block to include the sysconfig update")

	gpoOverhead, err := gpoContract.Overhead(&bind.CallOpts{})
	require.Nil(t, err, "reading gpo overhead")
	gpoScalar, err := gpoContract.Scalar(&bind.CallOpts{})
	require.Nil(t, err, "reading gpo scalar")

	if gpoOverhead.Cmp(overheadValue) != 0 {
		t.Errorf("overhead that was found (%v) is not what was set (%v)", gpoOverhead, overheadValue)
	}
	if gpoScalar.Cmp(scalarValue) != 0 {
		t.Errorf("scalar that was found (%v) is not what was set (%v)", gpoScalar, scalarValue)
	}

	// Now modify the scalar value & ensure that the gas params can be modified
	scalarValue = big.NewInt(params.Ether)

	opts.Context, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
	tx, err = sysconfig.SetGasConfig(opts, overheadValue, scalarValue)
	cancel()
	require.Nil(t, err, "sending overhead update tx")

	receipt, err = geth.WaitForTransaction(tx.Hash(), l1Client, txTimeoutDuration)
	require.Nil(t, err, "waiting for sysconfig set gas config update tx")
	require.Equal(t, receipt.Status, types.ReceiptStatusSuccessful, "transaction failed")

	_, err = geth.WaitForL1OriginOnL2(receipt.BlockNumber.Uint64(), l2Seq, txTimeoutDuration)
	require.NoError(t, err, "waiting for L2 block to include the sysconfig update")

	gpoOverhead, err = gpoContract.Overhead(&bind.CallOpts{})
	require.Nil(t, err, "reading gpo overhead")
	gpoScalar, err = gpoContract.Scalar(&bind.CallOpts{})
	require.Nil(t, err, "reading gpo scalar")

	if gpoOverhead.Cmp(overheadValue) != 0 {
		t.Errorf("overhead that was found (%v) is not what was set (%v)", gpoOverhead, overheadValue)
	}
	if gpoScalar.Cmp(scalarValue) != 0 {
		t.Errorf("scalar that was found (%v) is not what was set (%v)", gpoScalar, scalarValue)
	}
}

// TestL2SequencerRPCDepositTx checks that the L2 sequencer will not accept DepositTx type transactions.
// The acceptance of these transactions would allow for arbitrary minting of ETH in L2.
func TestL2SequencerRPCDepositTx(t *testing.T) {
	InitParallel(t)

	// Create our system configuration for L1/L2 and start it
	cfg := DefaultSystemConfig(t)
	sys, err := cfg.Start(t)
	require.Nil(t, err, "Error starting up system")
	defer sys.Close()

	// Obtain our sequencer, verifier, and transactor keypair.
	l2Seq := sys.Clients["sequencer"]
	l2Verif := sys.Clients["verifier"]
	txSigningKey := sys.cfg.Secrets.Alice
	require.Nil(t, err)

	// Create a deposit tx to send over RPC.
	tx := types.NewTx(&types.DepositTx{
		SourceHash:          common.Hash{},
		From:                crypto.PubkeyToAddress(txSigningKey.PublicKey),
		To:                  &common.Address{0xff, 0xff},
		Mint:                big.NewInt(1000),
		Value:               big.NewInt(1000),
		Gas:                 0,
		IsSystemTransaction: false,
		Data:                nil,
	})

	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	err = l2Seq.SendTransaction(ctx, tx)
	cancel()
	require.Error(t, err, "a DepositTx was accepted by L2 sequencer over RPC when it should not have been.")

	ctx, cancel = context.WithTimeout(context.Background(), 5*time.Second)
	err = l2Verif.SendTransaction(ctx, tx)
	cancel()
	require.Error(t, err, "a DepositTx was accepted by L2 verifier over RPC when it should not have been.")
}

// TestAccount defines an account generated by startConfigWithTestAccounts
type TestAccount struct {
	HDPath string
	Key    *ecdsa.PrivateKey
	Addr   common.Address
	L1Opts *bind.TransactOpts
	L2Opts *bind.TransactOpts
}

// startConfigWithTestAccounts takes a SystemConfig, generates additional accounts, adds them to the config, so they
// are funded on startup, starts the system, and imports the keys into the keystore, and obtains transaction opts for
// each account.
func startConfigWithTestAccounts(t *testing.T, cfg *SystemConfig, accountsToGenerate int) (*System, []*TestAccount, error) {
	// Create our test accounts and add them to the pre-mine cfg.
	testAccounts := make([]*TestAccount, 0)
	var err error
	for i := 0; i < accountsToGenerate; i++ {
		// Create our test account and add it to our list
		testAccount := &TestAccount{
			HDPath: fmt.Sprintf("m/44'/60'/0'/0/%d", 1000+i), // offset by 1000 to avoid collisions.
			Key:    nil,
			L1Opts: nil,
			L2Opts: nil,
		}
		testAccounts = append(testAccounts, testAccount)

		// Obtain our generated private key
		testAccount.Key, err = cfg.Secrets.Wallet.PrivateKey(accounts.Account{
			URL: accounts.URL{
				Path: testAccount.HDPath,
			},
		})
		if err != nil {
			return nil, nil, err
		}
		testAccount.Addr = crypto.PubkeyToAddress(testAccount.Key.PublicKey)

		// Obtain the transaction options for contract bindings for this account.
		testAccount.L1Opts, err = bind.NewKeyedTransactorWithChainID(testAccount.Key, cfg.L1ChainIDBig())
		if err != nil {
			return nil, nil, err
		}
		testAccount.L2Opts, err = bind.NewKeyedTransactorWithChainID(testAccount.Key, cfg.L2ChainIDBig())
		if err != nil {
			return nil, nil, err
		}

		// Fund the test account in our config
		cfg.Premine[testAccount.Addr] = big.NewInt(params.Ether)
		cfg.Premine[testAccount.Addr] = cfg.Premine[testAccount.Addr].Mul(cfg.Premine[testAccount.Addr], big.NewInt(1_000_000))

	}

	// Start our system
	sys, err := cfg.Start(t)
	if err != nil {
		return sys, nil, err
	}

	// Return our results.
	return sys, testAccounts, err
}

// TestMixedDepositValidity makes a number of deposit transactions, some which will succeed in transferring value,
// while others do not. It ensures that the expected nonces/balances match after several interactions.
func TestMixedDepositValidity(t *testing.T) {
	InitParallel(t)
	// Define how many deposit txs we'll make. Each deposit mints a fixed amount and transfers up to 1/3 of the user's
	// balance. As such, this number cannot be too high or else the test will always fail due to lack of balance in L1.
	const depositTxCount = 15

	// Define how many accounts we'll use to deposit funds
	const accountUsedToDeposit = 5

	// Create our system configuration, funding all accounts we created for L1/L2, and start it
	cfg := DefaultSystemConfig(t)
	sys, testAccounts, err := startConfigWithTestAccounts(t, &cfg, accountUsedToDeposit)
	require.Nil(t, err, "Error starting up system")
	defer sys.Close()

	// Obtain our sequencer, verifier, and transactor keypair.
	l1Client := sys.Clients["l1"]
	l2Seq := sys.Clients["sequencer"]
	l2Verif := sys.Clients["verifier"]
	require.NoError(t, err)

	// Define our L1 transaction timeout duration.
	txTimeoutDuration := 10 * time.Duration(cfg.DeployConfig.L1BlockTime) * time.Second

	// Create a struct used to track our transactors and their transactions sent.
	type TestAccountState struct {
		Account           *TestAccount
		ExpectedL1Balance *big.Int
		ExpectedL2Balance *big.Int
		StartingL1Nonce   uint64
		ExpectedL1Nonce   uint64
		StartingL2Nonce   uint64
		ExpectedL2Nonce   uint64
	}

	// Create the state objects for every test account we'll track changes for.
	transactors := make([]*TestAccountState, 0)
	for i := 0; i < len(testAccounts); i++ {
		// Obtain our account
		testAccount := testAccounts[i]

		// Obtain the transactor's starting nonce on L1.
		ctx, cancel := context.WithTimeout(context.Background(), txTimeoutDuration)
		startL1Nonce, err := l1Client.NonceAt(ctx, testAccount.L1Opts.From, nil)
		cancel()
		require.NoError(t, err)

		// Obtain the transactor's starting balance on L2.
		ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
		startL2Balance, err := l2Verif.BalanceAt(ctx, testAccount.L2Opts.From, nil)
		cancel()
		require.NoError(t, err)

		// Obtain the transactor's starting nonce on L2.
		ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
		startL2Nonce, err := l2Verif.NonceAt(ctx, testAccount.L2Opts.From, nil)
		cancel()
		require.NoError(t, err)

		// Add our transactor to our list
		transactors = append(transactors, &TestAccountState{
			Account:           testAccount,
			ExpectedL2Balance: startL2Balance,
			ExpectedL1Nonce:   startL1Nonce,
			ExpectedL2Nonce:   startL2Nonce,
		})
	}

	// Create our random provider
	randomProvider := rand.New(rand.NewSource(time.Now().Unix()))

	// Now we create a number of deposits from each transactor
	for i := 0; i < depositTxCount; i++ {
		// Determine if this deposit should succeed in transferring value (not minting)
		validTransfer := randomProvider.Int()%2 == 0

		// Determine the transactor to use
		transactorIndex := randomProvider.Int() % len(transactors)
		transactor := transactors[transactorIndex]

		// Determine the transactor to receive the deposit
		receiverIndex := randomProvider.Int() % len(transactors)
		receiver := transactors[receiverIndex]
		toAddr := receiver.Account.L2Opts.From

		// Create our L1 deposit transaction and send it.
		mintAmount := big.NewInt(randomProvider.Int63() % 9_000_000)
		transactor.Account.L1Opts.Value = mintAmount
		var transferValue *big.Int
		if validTransfer {
			transferValue = new(big.Int).Div(transactor.ExpectedL2Balance, common.Big3) // send 1/3 our balance which should succeed.
		} else {
			transferValue = new(big.Int).Mul(common.Big2, transactor.ExpectedL2Balance) // trigger a revert by trying to transfer our current balance * 2
		}
		SendDepositTx(t, cfg, l1Client, l2Verif, transactor.Account.L1Opts, func(l2Opts *DepositTxOpts) {
			l2Opts.GasLimit = 100_000
			l2Opts.IsCreation = false
			l2Opts.Data = nil
			l2Opts.ToAddr = toAddr
			l2Opts.Value = transferValue
			if validTransfer {
				l2Opts.ExpectedStatus = types.ReceiptStatusSuccessful
			} else {
				l2Opts.ExpectedStatus = types.ReceiptStatusFailed
			}
		})

		// Update our expected balances.
		if validTransfer && transactor != receiver {
			// Transactor balances changes by minted minus transferred value.
			transactor.ExpectedL2Balance = new(big.Int).Add(transactor.ExpectedL2Balance, new(big.Int).Sub(mintAmount, transferValue))
			// Receiver balance changes by transferred value.
			receiver.ExpectedL2Balance = new(big.Int).Add(receiver.ExpectedL2Balance, transferValue)
		} else {
			// If the transfer failed, minting should've still succeeded but the balance shouldn't have transferred
			// to the recipient.
			transactor.ExpectedL2Balance = new(big.Int).Add(transactor.ExpectedL2Balance, mintAmount)
		}
		transactor.ExpectedL1Nonce = transactor.ExpectedL1Nonce + 1
		transactor.ExpectedL2Nonce = transactor.ExpectedL2Nonce + 1
	}

	// At the end, assert our account balance/nonce states.
	for _, transactor := range transactors {
		// Obtain the L1 account nonce
		ctx, cancel := context.WithTimeout(context.Background(), txTimeoutDuration)
		endL1Nonce, err := l1Client.NonceAt(ctx, transactor.Account.L1Opts.From, nil)
		cancel()
		require.NoError(t, err)

		// Obtain the L2 sequencer account balance
		ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
		endL2SeqBalance, err := l2Seq.BalanceAt(ctx, transactor.Account.L2Opts.From, nil)
		cancel()
		require.NoError(t, err)

		// Obtain the L2 sequencer account nonce
		ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
		endL2SeqNonce, err := l2Seq.NonceAt(ctx, transactor.Account.L2Opts.From, nil)
		cancel()
		require.NoError(t, err)

		// Obtain the L2 verifier account balance
		ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
		endL2VerifBalance, err := l2Verif.BalanceAt(ctx, transactor.Account.L2Opts.From, nil)
		cancel()
		require.NoError(t, err)

		// Obtain the L2 verifier account nonce
		ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
		endL2VerifNonce, err := l2Verif.NonceAt(ctx, transactor.Account.L2Opts.From, nil)
		cancel()
		require.NoError(t, err)

		require.Equal(t, transactor.ExpectedL1Nonce, endL1Nonce, "Unexpected L1 nonce for transactor")
		require.Equal(t, transactor.ExpectedL2Nonce, endL2SeqNonce, "Unexpected L2 sequencer nonce for transactor")
		require.Equal(t, transactor.ExpectedL2Balance, endL2SeqBalance, "Unexpected L2 sequencer balance for transactor")
		require.Equal(t, transactor.ExpectedL2Nonce, endL2VerifNonce, "Unexpected L2 verifier nonce for transactor")
		require.Equal(t, transactor.ExpectedL2Balance, endL2VerifBalance, "Unexpected L2 verifier balance for transactor")
	}
}

// TestMixedWithdrawalValidity makes a number of withdrawal transactions and ensures ones with modified parameters are
// rejected while unmodified ones are accepted. This runs test cases in different systems.
func TestMixedWithdrawalValidity(t *testing.T) {
	InitParallel(t)

	// There are 7 different fields we try modifying to cause a failure, plus one "good" test result we test.
	for i := 0; i <= 8; i++ {
		i := i // avoid loop var capture
		t.Run(fmt.Sprintf("withdrawal test#%d", i+1), func(t *testing.T) {
			InitParallel(t)

			// Create our system configuration, funding all accounts we created for L1/L2, and start it
			cfg := DefaultSystemConfig(t)
			cfg.DeployConfig.L2BlockTime = 2
			require.LessOrEqual(t, cfg.DeployConfig.FinalizationPeriodSeconds, uint64(6))
			require.Equal(t, cfg.DeployConfig.FundDevAccounts, true)
			sys, err := cfg.Start(t)
			require.NoError(t, err, "error starting up system")
			defer sys.Close()

			// Obtain our sequencer, verifier, and transactor keypair.
			l1Client := sys.Clients["l1"]
			l2Seq := sys.Clients["sequencer"]
			l2Verif := sys.Clients["verifier"]
			require.NoError(t, err)

			systemConfig, err := bindings.NewSystemConfigCaller(cfg.L1Deployments.SystemConfigProxy, l1Client)
			require.NoError(t, err)
			unsafeBlockSigner, err := systemConfig.UnsafeBlockSigner(nil)
			require.NoError(t, err)
			require.Equal(t, cfg.DeployConfig.P2PSequencerAddress, unsafeBlockSigner)

			// The batcher has balance on L1
			batcherBalance, err := l1Client.BalanceAt(context.Background(), cfg.DeployConfig.BatchSenderAddress, nil)
			require.NoError(t, err)
			require.NotEqual(t, batcherBalance, big.NewInt(0))

			// The proposer has balance on L1
			proposerBalance, err := l1Client.BalanceAt(context.Background(), cfg.DeployConfig.L2OutputOracleProposer, nil)
			require.NoError(t, err)
			require.NotEqual(t, proposerBalance, big.NewInt(0))

			// Define our L1 transaction timeout duration.
			txTimeoutDuration := 10 * time.Duration(cfg.DeployConfig.L1BlockTime) * time.Second

			// Bind to the deposit contract
			depositContract, err := bindings.NewOptimismPortal(cfg.L1Deployments.OptimismPortalProxy, l1Client)
			_ = depositContract
			require.NoError(t, err)

			l2OutputOracle, err := bindings.NewL2OutputOracleCaller(cfg.L1Deployments.L2OutputOracleProxy, l1Client)
			require.NoError(t, err)

			finalizationPeriod, err := l2OutputOracle.FINALIZATIONPERIODSECONDS(nil)
			require.NoError(t, err)
			require.Equal(t, cfg.DeployConfig.FinalizationPeriodSeconds, finalizationPeriod.Uint64())

			// Create a struct used to track our transactors and their transactions sent.
			type TestAccountState struct {
				Account           *TestAccount
				ExpectedL1Balance *big.Int
				ExpectedL2Balance *big.Int
				ExpectedL1Nonce   uint64
				ExpectedL2Nonce   uint64
			}

			// Create a test account state for our transactor.
			transactor := &TestAccountState{
				Account: &TestAccount{
					HDPath: e2eutils.DefaultMnemonicConfig.Alice,
					Key:    cfg.Secrets.Alice,
					L1Opts: nil,
					L2Opts: nil,
				},
				ExpectedL1Balance: nil,
				ExpectedL2Balance: nil,
				ExpectedL1Nonce:   0,
				ExpectedL2Nonce:   0,
			}
			transactor.Account.L1Opts, err = bind.NewKeyedTransactorWithChainID(transactor.Account.Key, cfg.L1ChainIDBig())
			require.NoError(t, err)
			transactor.Account.L2Opts, err = bind.NewKeyedTransactorWithChainID(transactor.Account.Key, cfg.L2ChainIDBig())
			require.NoError(t, err)

			// Obtain the transactor's starting balance on L1.
			ctx, cancel := context.WithTimeout(context.Background(), txTimeoutDuration)
			transactor.ExpectedL1Balance, err = l1Client.BalanceAt(ctx, transactor.Account.L1Opts.From, nil)
			cancel()
			require.NoError(t, err)

			// Obtain the transactor's starting balance on L2.
			ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
			transactor.ExpectedL2Balance, err = l2Verif.BalanceAt(ctx, transactor.Account.L2Opts.From, nil)
			cancel()
			require.NoError(t, err)

			// Bind to the L2-L1 message passer
			l2l1MessagePasser, err := bindings.NewL2ToL1MessagePasser(predeploys.L2ToL1MessagePasserAddr, l2Seq)
			require.NoError(t, err, "error binding to message passer on L2")

			// Create our fuzzer wrapper to generate complex values (despite this not being a fuzz test, this is still a useful
			// provider to fill complex data structures).
			typeProvider := fuzz.NewWithSeed(time.Now().Unix()).NilChance(0).MaxDepth(10000).NumElements(0, 0x100)
			fuzzerutils.AddFuzzerFunctions(typeProvider)

			// Now we create a number of withdrawals from each transactor

			// Determine the address our request will come from
			fromAddr := crypto.PubkeyToAddress(transactor.Account.Key.PublicKey)
			fromBalance, err := l2Verif.BalanceAt(context.Background(), fromAddr, nil)
			require.NoError(t, err)
			require.Greaterf(t, fromBalance.Uint64(), uint64(700_000_000_000), "insufficient balance for %s", fromAddr)

			// Initiate Withdrawal
			withdrawAmount := big.NewInt(500_000_000_000)
			transactor.Account.L2Opts.Value = withdrawAmount
			tx, err := l2l1MessagePasser.InitiateWithdrawal(transactor.Account.L2Opts, fromAddr, big.NewInt(21000), nil)
			require.Nil(t, err, "sending initiate withdraw tx")

			t.Logf("Waiting for tx %s to be in sequencer", tx.Hash().Hex())
			receiptSeq, err := geth.WaitForTransaction(tx.Hash(), l2Seq, txTimeoutDuration)
			require.Nil(t, err, "withdrawal initiated on L2 sequencer")
			require.Equal(t, receiptSeq.Status, types.ReceiptStatusSuccessful, "transaction failed")

			verifierTip, err := l2Verif.BlockByNumber(context.Background(), nil)
			require.Nil(t, err)

			t.Logf("Waiting for tx %s to be in verifier. Verifier tip is %s:%d. Included in sequencer in block %s:%d", tx.Hash().Hex(), verifierTip.Hash().Hex(), verifierTip.NumberU64(), receiptSeq.BlockHash.Hex(), receiptSeq.BlockNumber)
			// Wait for the transaction to appear in L2 verifier
			receipt, err := geth.WaitForTransaction(tx.Hash(), l2Verif, txTimeoutDuration)
			require.Nilf(t, err, "withdrawal tx %s not found in verifier. included in block %s:%d", tx.Hash().Hex(), receiptSeq.BlockHash.Hex(), receiptSeq.BlockNumber)
			require.Equal(t, receipt.Status, types.ReceiptStatusSuccessful, "transaction failed")

			// Obtain the header for the block containing the transaction (used to calculate gas fees)
			ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
			header, err := l2Verif.HeaderByNumber(ctx, receipt.BlockNumber)
			cancel()
			require.Nil(t, err)

			// Calculate gas fees for the withdrawal in L2 to later adjust our balance.
			withdrawalL2GasFee := calcGasFees(receipt.GasUsed, tx.GasTipCap(), tx.GasFeeCap(), header.BaseFee)

			// Adjust our expected L2 balance (should've decreased by withdraw amount + fees)
			transactor.ExpectedL2Balance = new(big.Int).Sub(transactor.ExpectedL2Balance, withdrawAmount)
			transactor.ExpectedL2Balance = new(big.Int).Sub(transactor.ExpectedL2Balance, withdrawalL2GasFee)
			transactor.ExpectedL2Balance = new(big.Int).Sub(transactor.ExpectedL2Balance, receipt.L1Fee)
			transactor.ExpectedL2Nonce = transactor.ExpectedL2Nonce + 1

			// Wait for the finalization period, then we can finalize this withdrawal.
			ctx, cancel = context.WithTimeout(context.Background(), 40*time.Duration(cfg.DeployConfig.L1BlockTime)*time.Second)
			require.NotEqual(t, cfg.L1Deployments.L2OutputOracleProxy, common.Address{})
			blockNumber, err := wait.ForOutputRootPublished(ctx, l1Client, cfg.L1Deployments.L2OutputOracleProxy, receipt.BlockNumber)
			cancel()
			require.Nil(t, err)

			ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
			header, err = l2Verif.HeaderByNumber(ctx, new(big.Int).SetUint64(blockNumber))
			cancel()
			require.Nil(t, err)

			rpcClient, err := rpc.Dial(sys.EthInstances["verifier"].WSEndpoint())
			require.Nil(t, err)
			proofCl := gethclient.New(rpcClient)
			receiptCl := ethclient.NewClient(rpcClient)

			// Now create the withdrawal
			params, err := withdrawals.ProveWithdrawalParameters(context.Background(), proofCl, receiptCl, tx.Hash(), header, l2OutputOracle)
			require.Nil(t, err)

			// Obtain our withdrawal parameters
			withdrawalTransaction := &bindings.TypesWithdrawalTransaction{
				Nonce:    params.Nonce,
				Sender:   params.Sender,
				Target:   params.Target,
				Value:    params.Value,
				GasLimit: params.GasLimit,
				Data:     params.Data,
			}
			l2OutputIndexParam := params.L2OutputIndex
			outputRootProofParam := params.OutputRootProof
			withdrawalProofParam := params.WithdrawalProof

			// Determine if this will be a bad withdrawal.
			badWithdrawal := i < 8
			if badWithdrawal {
				// Select a field to overwrite depending on which test case this is.
				fieldIndex := i

				// We ensure that each field changes to something different.
				if fieldIndex == 0 {
					originalValue := new(big.Int).Set(withdrawalTransaction.Nonce)
					for originalValue.Cmp(withdrawalTransaction.Nonce) == 0 {
						typeProvider.Fuzz(&withdrawalTransaction.Nonce)
					}
				} else if fieldIndex == 1 {
					originalValue := withdrawalTransaction.Sender
					for originalValue == withdrawalTransaction.Sender {
						typeProvider.Fuzz(&withdrawalTransaction.Sender)
					}
				} else if fieldIndex == 2 {
					originalValue := withdrawalTransaction.Target
					for originalValue == withdrawalTransaction.Target {
						typeProvider.Fuzz(&withdrawalTransaction.Target)
					}
				} else if fieldIndex == 3 {
					originalValue := new(big.Int).Set(withdrawalTransaction.Value)
					for originalValue.Cmp(withdrawalTransaction.Value) == 0 {
						typeProvider.Fuzz(&withdrawalTransaction.Value)
					}
				} else if fieldIndex == 4 {
					originalValue := new(big.Int).Set(withdrawalTransaction.GasLimit)
					for originalValue.Cmp(withdrawalTransaction.GasLimit) == 0 {
						typeProvider.Fuzz(&withdrawalTransaction.GasLimit)
					}
				} else if fieldIndex == 5 {
					originalValue := new(big.Int).Set(l2OutputIndexParam)
					for originalValue.Cmp(l2OutputIndexParam) == 0 {
						typeProvider.Fuzz(&l2OutputIndexParam)
					}
				} else if fieldIndex == 6 {
					// TODO: this is a large structure that is unlikely to ever produce the same value, however we should
					//  verify that we actually generated different values.
					typeProvider.Fuzz(&outputRootProofParam)
				} else if fieldIndex == 7 {
					typeProvider.Fuzz(&withdrawalProofParam)
					originalValue := make([][]byte, len(withdrawalProofParam))
					for i := 0; i < len(withdrawalProofParam); i++ {
						originalValue[i] = make([]byte, len(withdrawalProofParam[i]))
						copy(originalValue[i], withdrawalProofParam[i])
						for bytes.Equal(originalValue[i], withdrawalProofParam[i]) {
							typeProvider.Fuzz(&withdrawalProofParam[i])
						}
					}

				}
			}

			// Prove withdrawal. This checks the proof so we only finalize if this succeeds
			tx, err = depositContract.ProveWithdrawalTransaction(
				transactor.Account.L1Opts,
				*withdrawalTransaction,
				l2OutputIndexParam,
				outputRootProofParam,
				withdrawalProofParam,
			)

			// If we had a bad withdrawal, we don't update some expected value and skip to processing the next
			// withdrawal. Otherwise, if it was valid, this should've succeeded so we proceed with updating our expected
			// values and asserting no errors occurred.
			if badWithdrawal {
				require.Error(t, err)
			} else {
				require.NoError(t, err)

				receipt, err = geth.WaitForTransaction(tx.Hash(), l1Client, txTimeoutDuration)
				require.Nil(t, err, "finalize withdrawal")
				require.Equal(t, types.ReceiptStatusSuccessful, receipt.Status)

				// Verify balance after withdrawal
				ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
				header, err = l1Client.HeaderByNumber(ctx, receipt.BlockNumber)
				cancel()
				require.Nil(t, err)

				// Ensure that withdrawal - gas fees are added to the L1 balance
				// Fun fact, the fee is greater than the withdrawal amount
				withdrawalL1GasFee := calcGasFees(receipt.GasUsed, tx.GasTipCap(), tx.GasFeeCap(), header.BaseFee)
				transactor.ExpectedL1Balance = new(big.Int).Add(transactor.ExpectedL2Balance, withdrawAmount)
				transactor.ExpectedL1Balance = new(big.Int).Sub(transactor.ExpectedL2Balance, withdrawalL1GasFee)
				transactor.ExpectedL1Nonce++

				// Ensure that our withdrawal was proved successfully
				proveReceipt, err := geth.WaitForTransaction(tx.Hash(), l1Client, 3*time.Duration(cfg.DeployConfig.L1BlockTime)*time.Second)
				require.Nil(t, err, "prove withdrawal")
				require.Equal(t, types.ReceiptStatusSuccessful, proveReceipt.Status)

				// Wait for finalization and then create the Finalized Withdrawal Transaction
				ctx, cancel = context.WithTimeout(context.Background(), 45*time.Duration(cfg.DeployConfig.L1BlockTime)*time.Second)
				defer cancel()
				err = wait.ForFinalizationPeriod(ctx, l1Client, header.Number, cfg.L1Deployments.L2OutputOracleProxy)
				require.Nil(t, err)

				// Finalize withdrawal
				_, err = depositContract.FinalizeWithdrawalTransaction(
					transactor.Account.L1Opts,
					*withdrawalTransaction,
				)
				require.NoError(t, err)
			}

			// At the end, assert our account balance/nonce states.

			// Obtain the L2 sequencer account balance
			ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
			endL1Balance, err := l1Client.BalanceAt(ctx, transactor.Account.L1Opts.From, nil)
			cancel()
			require.NoError(t, err)

			// Obtain the L1 account nonce
			ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
			endL1Nonce, err := l1Client.NonceAt(ctx, transactor.Account.L1Opts.From, nil)
			cancel()
			require.NoError(t, err)

			// Obtain the L2 sequencer account balance
			ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
			endL2SeqBalance, err := l2Seq.BalanceAt(ctx, transactor.Account.L1Opts.From, nil)
			cancel()
			require.NoError(t, err)

			// Obtain the L2 sequencer account nonce
			ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
			endL2SeqNonce, err := l2Seq.NonceAt(ctx, transactor.Account.L1Opts.From, nil)
			cancel()
			require.NoError(t, err)

			// Obtain the L2 verifier account balance
			ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
			endL2VerifBalance, err := l2Verif.BalanceAt(ctx, transactor.Account.L1Opts.From, nil)
			cancel()
			require.NoError(t, err)

			// Obtain the L2 verifier account nonce
			ctx, cancel = context.WithTimeout(context.Background(), txTimeoutDuration)
			endL2VerifNonce, err := l2Verif.NonceAt(ctx, transactor.Account.L1Opts.From, nil)
			cancel()
			require.NoError(t, err)

			// TODO: Check L1 balance as well here. We avoided this due to time constraints as it seems L1 fees
			//  were off slightly.
			_ = endL1Balance
			// require.Equal(t, transactor.ExpectedL1Balance, endL1Balance, "Unexpected L1 balance for transactor")
			require.Equal(t, transactor.ExpectedL1Nonce, endL1Nonce, "Unexpected L1 nonce for transactor")
			require.Equal(t, transactor.ExpectedL2Nonce, endL2SeqNonce, "Unexpected L2 sequencer nonce for transactor")
			require.Equal(t, transactor.ExpectedL2Balance, endL2SeqBalance, "Unexpected L2 sequencer balance for transactor")
			require.Equal(t, transactor.ExpectedL2Nonce, endL2VerifNonce, "Unexpected L2 verifier nonce for transactor")
			require.Equal(t, transactor.ExpectedL2Balance, endL2VerifBalance, "Unexpected L2 verifier balance for transactor")
		})
	}
}