test(e2e): eliminate panic usage across testing suite

changelog.md

@@ -66,8 +66,10 @@
 * [2299](https://github.com/zeta-chain/node/pull/2299) - add `zetae2e` command to deploy test contracts
 * [2360](https://github.com/zeta-chain/node/pull/2360) - add stateful e2e tests.
 * [2349](https://github.com/zeta-chain/node/pull/2349) - add TestBitcoinDepositRefund and WithdrawBitcoinMultipleTimes E2E tests
+* [2368](https://github.com/zeta-chain/node/pull/2368) - eliminate panic usage across testing suite
 * [2369](https://github.com/zeta-chain/node/pull/2369) - fix random cross-chain swap failure caused by using tiny UTXO
 
+
 ### Fixes
 
 * [1484](https://github.com/zeta-chain/node/issues/1484) - replaced hard-coded `MaxLookaheadNonce` with a default lookback factor

cmd/zetaclientd/gen_pre_params.go

@@ -18,7 +18,7 @@ var GenPrePramsCmd = &cobra.Command{
 	Use:   "gen-pre-params <path>",
 	Short: "Generate pre parameters for TSS",
 	Args:  cobra.ExactArgs(1),
-	RunE: func(cmd *cobra.Command, args []string) error {
+	RunE: func(_ *cobra.Command, args []string) error {
 		startTime := time.Now()
 		preParams, err := keygen.GeneratePreParams(time.Second * 300)
 		if err != nil {

cmd/zetae2e/local/admin.go

@@ -2,7 +2,6 @@ package local
 
 import (
 	"fmt"
-	"runtime"
 	"time"
 
 	"github.com/fatih/color"
@@ -20,17 +19,6 @@ func adminTestRoutine(
 	testNames ...string,
 ) func() error {
 	return func() (err error) {
-		// return an error on panic
-		// https://github.com/zeta-chain/node/issues/1500
-		defer func() {
-			if r := recover(); r != nil {
-				// print stack trace
-				stack := make([]byte, 4096)
-				n := runtime.Stack(stack, false)
-				err = fmt.Errorf("admin panic: %v, stack trace %s", r, stack[:n])
-			}
-		}()
-
 		// initialize runner for erc20 advanced test
 		adminRunner, err := initTestRunner(
 			"admin",

cmd/zetae2e/local/bitcoin.go

@@ -2,7 +2,6 @@ package local
 
 import (
 	"fmt"
-	"runtime"
 	"time"
 
 	"github.com/fatih/color"
@@ -22,18 +21,6 @@ func bitcoinTestRoutine(
 	testNames ...string,
 ) func() error {
 	return func() (err error) {
-		// return an error on panic
-		// TODO: remove and instead return errors in the tests
-		// https://github.com/zeta-chain/node/issues/1500
-		defer func() {
-			if r := recover(); r != nil {
-				// print stack trace
-				stack := make([]byte, 4096)
-				n := runtime.Stack(stack, false)
-				err = fmt.Errorf("bitcoin panic: %v, stack trace %s", r, stack[:n])
-			}
-		}()
-
 		// initialize runner for bitcoin test
 		bitcoinRunner, err := initTestRunner(
 			"bitcoin",

cmd/zetae2e/local/erc20.go

@@ -2,7 +2,6 @@ package local
 
 import (
 	"fmt"
-	"runtime"
 	"time"
 
 	"github.com/fatih/color"
@@ -20,18 +19,6 @@ func erc20TestRoutine(
 	testNames ...string,
 ) func() error {
 	return func() (err error) {
-		// return an error on panic
-		// TODO: remove and instead return errors in the tests
-		// https://github.com/zeta-chain/node/issues/1500
-		defer func() {
-			if r := recover(); r != nil {
-				// print stack trace
-				stack := make([]byte, 4096)
-				n := runtime.Stack(stack, false)
-				err = fmt.Errorf("erc20 panic: %v, stack trace %s", r, stack[:n])
-			}
-		}()
-
 		// initialize runner for erc20 test
 		erc20Runner, err := initTestRunner(
 			"erc20",

cmd/zetae2e/local/ethereum.go

@@ -2,7 +2,6 @@ package local
 
 import (
 	"fmt"
-	"runtime"
 	"time"
 
 	"github.com/fatih/color"
@@ -21,18 +20,6 @@ func ethereumTestRoutine(
 	testNames ...string,
 ) func() error {
 	return func() (err error) {
-		// return an error on panic
-		// TODO: remove and instead return errors in the tests
-		// https://github.com/zeta-chain/node/issues/1500
-		defer func() {
-			if r := recover(); r != nil {
-				// print stack trace
-				stack := make([]byte, 4096)
-				n := runtime.Stack(stack, false)
-				err = fmt.Errorf("ethereum panic: %v, stack trace %s", r, stack[:n])
-			}
-		}()
-
 		// initialize runner for ether test
 		ethereumRunner, err := initTestRunner(
 			"ether",

cmd/zetae2e/local/local.go

@@ -2,7 +2,6 @@ package local
 
 import (
 	"context"
-	"fmt"
 	"os"
 	"path/filepath"
 	"time"
@@ -18,6 +17,7 @@ import (
 	"github.com/zeta-chain/zetacore/e2e/txserver"
 	"github.com/zeta-chain/zetacore/e2e/utils"
 	"github.com/zeta-chain/zetacore/pkg/chains"
+	"github.com/zeta-chain/zetacore/testutil"
 	crosschaintypes "github.com/zeta-chain/zetacore/x/crosschain/types"
 )
 
@@ -42,6 +42,8 @@ var (
 	TestTimeout = 15 * time.Minute
 )
 
+var noError = testutil.NoError
+
 // NewLocalCmd returns the local command
 // which runs the E2E tests locally on the machine with localnet for each blockchain
 func NewLocalCmd() *cobra.Command {
@@ -70,58 +72,21 @@ func NewLocalCmd() *cobra.Command {
 
 func localE2ETest(cmd *cobra.Command, _ []string) {
 	// fetch flags
-	waitForHeight, err := cmd.Flags().GetInt64(flagWaitForHeight)
-	if err != nil {
-		panic(err)
-	}
-	contractsDeployed, err := cmd.Flags().GetBool(flagContractsDeployed)
-	if err != nil {
-		panic(err)
-	}
-	verbose, err := cmd.Flags().GetBool(flagVerbose)
-	if err != nil {
-		panic(err)
-	}
-	configOut, err := cmd.Flags().GetString(flagConfigOut)
-	if err != nil {
-		panic(err)
-	}
-	testAdmin, err := cmd.Flags().GetBool(flagTestAdmin)
-	if err != nil {
-		panic(err)
-	}
-	testPerformance, err := cmd.Flags().GetBool(flagTestPerformance)
-	if err != nil {
-		panic(err)
-	}
-	testCustom, err := cmd.Flags().GetBool(flagTestCustom)
-	if err != nil {
-		panic(err)
-	}
-	skipRegular, err := cmd.Flags().GetBool(flagSkipRegular)
-	if err != nil {
-		panic(err)
-	}
-	light, err := cmd.Flags().GetBool(flagLight)
-	if err != nil {
-		panic(err)
-	}
-	setupOnly, err := cmd.Flags().GetBool(flagSetupOnly)
-	if err != nil {
-		panic(err)
-	}
-	skipSetup, err := cmd.Flags().GetBool(flagSkipSetup)
-	if err != nil {
-		panic(err)
-	}
-	skipBitcoinSetup, err := cmd.Flags().GetBool(flagSkipBitcoinSetup)
-	if err != nil {
-		panic(err)
-	}
-	skipHeaderProof, err := cmd.Flags().GetBool(flagSkipHeaderProof)
-	if err != nil {
-		panic(err)
-	}
+	var (
+		waitForHeight     = must(cmd.Flags().GetInt64(flagWaitForHeight))
+		contractsDeployed = must(cmd.Flags().GetBool(flagContractsDeployed))
+		verbose           = must(cmd.Flags().GetBool(flagVerbose))
+		configOut         = must(cmd.Flags().GetString(flagConfigOut))
+		testAdmin         = must(cmd.Flags().GetBool(flagTestAdmin))
+		testPerformance   = must(cmd.Flags().GetBool(flagTestPerformance))
+		testCustom        = must(cmd.Flags().GetBool(flagTestCustom))
+		skipRegular       = must(cmd.Flags().GetBool(flagSkipRegular))
+		light             = must(cmd.Flags().GetBool(flagLight))
+		setupOnly         = must(cmd.Flags().GetBool(flagSetupOnly))
+		skipSetup         = must(cmd.Flags().GetBool(flagSkipSetup))
+		skipBitcoinSetup  = must(cmd.Flags().GetBool(flagSkipBitcoinSetup))
+		skipHeaderProof   = must(cmd.Flags().GetBool(flagSkipHeaderProof))
+	)
 
 	logger := runner.NewLogger(verbose, color.FgWhite, "setup")
 
@@ -146,16 +111,14 @@ func localE2ETest(cmd *cobra.Command, _ []string) {
 
 	// initialize tests config
 	conf, err := GetConfig(cmd)
-	if err != nil {
-		panic(err)
-	}
+	noError(err)
 
 	// initialize context
 	ctx, cancel := context.WithCancel(context.Background())
 
 	// wait for a specific height on ZetaChain
 	if waitForHeight != 0 {
-		utils.WaitForBlockHeight(ctx, waitForHeight, conf.RPCs.ZetaCoreRPC, logger)
+		noError(utils.WaitForBlockHeight(ctx, waitForHeight, conf.RPCs.ZetaCoreRPC, logger))
 	}
 
 	// set account prefix to zeta
@@ -167,9 +130,7 @@ func localE2ETest(cmd *cobra.Command, _ []string) {
 		[]string{UserFungibleAdminPrivateKey},
 		conf.ZetaChainID,
 	)
-	if err != nil {
-		panic(fmt.Errorf("failed to initialize ZetaChain tx server: %w", err))
-	}
+	noError(err)
 
 	// initialize deployer runner with config
 	deployerRunner, err := zetae2econfig.RunnerFromConfig(
@@ -182,9 +143,7 @@ func localE2ETest(cmd *cobra.Command, _ []string) {
 		logger,
 		runner.WithZetaTxServer(zetaTxServer),
 	)
-	if err != nil {
-		panic(err)
-	}
+	noError(err)
 
 	// wait for keygen to be completed
 	// if setup is skipped, we assume that the keygen is already completed
@@ -193,16 +152,13 @@ func localE2ETest(cmd *cobra.Command, _ []string) {
 	}
 
 	// query and set the TSS
-	if err := deployerRunner.SetTSSAddresses(); err != nil {
-		panic(err)
-	}
+	noError(deployerRunner.SetTSSAddresses())
 
 	if !skipHeaderProof {
-		if err := deployerRunner.EnableHeaderVerification([]int64{
+		noError(deployerRunner.EnableHeaderVerification([]int64{
 			chains.GoerliLocalnet.ChainId,
-			chains.BitcoinRegtest.ChainId}); err != nil {
-			panic(err)
-		}
+			chains.BitcoinRegtest.ChainId,
+		}))
 	}
 
 	// setting up the networks
@@ -212,30 +168,22 @@ func localE2ETest(cmd *cobra.Command, _ []string) {
 
 		deployerRunner.SetupEVM(contractsDeployed, true)
 		deployerRunner.SetZEVMContracts()
-
-		// NOTE: this method return an error so we handle it and panic if it occurs unlike other method that panics directly
-		// TODO: all methods should return errors instead of panicking and this current function should also return an error
-		// https://github.com/zeta-chain/node/issues/1500
-		if err := deployerRunner.FundEmissionsPool(); err != nil {
-			panic(err)
-		}
+		noError(deployerRunner.FundEmissionsPool())
 
 		deployerRunner.MintERC20OnEvm(10000)
 
 		logger.Print("✅ setup completed in %s", time.Since(startTime))
 	}
+
 	// if a config output is specified, write the config
 	if configOut != "" {
 		newConfig := zetae2econfig.ExportContractsFromRunner(deployerRunner, conf)
-		configOut, err := filepath.Abs(configOut)
-		if err != nil {
-			panic(err)
-		}
 
 		// write config into stdout
-		if err := config.WriteConfig(configOut, newConfig); err != nil {
-			panic(err)
-		}
+		configOut, err := filepath.Abs(configOut)
+		noError(err)
+
+		noError(config.WriteConfig(configOut, newConfig))
 
 		logger.Print("✅ config file written in %s", configOut)
 	}
@@ -407,3 +355,7 @@ func waitKeygenHeight(
 		logger.Info("Last ZetaHeight: %d", response.Height)
 	}
 }
+
+func must[T any](v T, err error) T {
+	return testutil.Must(v, err)
+}

cmd/zetae2e/local/misc.go

@@ -2,7 +2,6 @@ package local
 
 import (
 	"fmt"
-	"runtime"
 	"time"
 
 	"github.com/fatih/color"
@@ -20,18 +19,6 @@ func miscTestRoutine(
 	testNames ...string,
 ) func() error {
 	return func() (err error) {
-		// return an error on panic
-		// TODO: remove and instead return errors in the tests
-		// https://github.com/zeta-chain/node/issues/1500
-		defer func() {
-			if r := recover(); r != nil {
-				// print stack trace
-				stack := make([]byte, 4096)
-				n := runtime.Stack(stack, false)
-				err = fmt.Errorf("misc panic: %v, stack trace %s", r, stack[:n])
-			}
-		}()
-
 		// initialize runner for misc test
 		miscRunner, err := initTestRunner(
 			"misc",