Remove redundant calls to os.exit() in TestMain (#7761)

Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>

beacon-chain/cache/BUILD.bazel

@@ -57,7 +57,7 @@ go_test(
         "checkpoint_state_test.go",
         "committee_fuzz_test.go",
         "committee_test.go",
-        "feature_flag_test.go",
+        "cache_test.go",
         "hot_state_cache_test.go",
         "skip_slot_cache_test.go",
         "subnet_ids_test.go",

beacon-chain/cache/cache_test.go

@@ -1,7 +1,6 @@
 package cache
 
 import (
-	"os"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/shared/featureconfig"
@@ -10,8 +9,5 @@ import (
 func TestMain(m *testing.M) {
 	resetCfg := featureconfig.InitWithReset(&featureconfig.Flags{EnableEth1DataVoteCache: true})
 	defer resetCfg()
-	code := m.Run()
-	// os.Exit will prevent defer from being called
-	resetCfg()
-	os.Exit(code)
+	m.Run()
 }

beacon-chain/core/epoch/spectest/spectest_test.go

@@ -1,7 +1,6 @@
 package spectest
 
 import (
-	"os"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/shared/params"
@@ -9,11 +8,10 @@ import (
 
 func TestMain(m *testing.M) {
 	prevConfig := params.BeaconConfig().Copy()
+	defer params.OverrideBeaconConfig(prevConfig)
 	c := params.BeaconConfig()
 	c.MinGenesisActiveValidatorCount = 16384
 	params.OverrideBeaconConfig(c)
 
-	retVal := m.Run()
-	params.OverrideBeaconConfig(prevConfig)
-	os.Exit(retVal)
+	m.Run()
 }

beacon-chain/p2p/peers/peers_test.go

@@ -2,7 +2,6 @@ package peers_test
 
 import (
 	"io/ioutil"
-	"os"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/beacon-chain/flags"
@@ -27,9 +26,5 @@ func TestMain(m *testing.M) {
 	defer func() {
 		flags.Init(resetFlags)
 	}()
-	code := m.Run()
-	// os.Exit will prevent defer from being called
-	resetCfg()
-	flags.Init(resetFlags)
-	os.Exit(code)
+	m.Run()
 }

beacon-chain/p2p/peers/scorers/scorers_test.go

@@ -3,7 +3,6 @@ package scorers_test
 import (
 	"io/ioutil"
 	"math"
-	"os"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/beacon-chain/flags"
@@ -29,11 +28,7 @@ func TestMain(m *testing.M) {
 	defer func() {
 		flags.Init(resetFlags)
 	}()
-	code := m.Run()
-	// os.Exit will prevent defer from being called
-	resetCfg()
-	flags.Init(resetFlags)
-	os.Exit(code)
+	m.Run()
 }
 
 // roundScore returns score rounded in accordance with the score manager's rounding factor.

beacon-chain/powchain/powchain_test.go

@@ -2,7 +2,6 @@ package powchain
 
 import (
 	"io/ioutil"
-	"os"
 	"testing"
 
 	"github.com/sirupsen/logrus"
@@ -12,5 +11,5 @@ func TestMain(m *testing.M) {
 	logrus.SetLevel(logrus.DebugLevel)
 	logrus.SetOutput(ioutil.Discard)
 
-	os.Exit(m.Run())
+	m.Run()
 }

beacon-chain/rpc/beacon/beacon_test.go

@@ -1,7 +1,6 @@
 package beacon
 
 import (
-	"os"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/beacon-chain/flags"
@@ -11,14 +10,16 @@ import (
 func TestMain(m *testing.M) {
 	// Use minimal config to reduce test setup time.
 	prevConfig := params.BeaconConfig().Copy()
+	defer params.OverrideBeaconConfig(prevConfig)
 	params.OverrideBeaconConfig(params.MinimalSpecConfig())
+
+	resetFlags := flags.Get()
 	flags.Init(&flags.GlobalFlags{
 		MinimumSyncPeers: 30,
 	})
+	defer func() {
+		flags.Init(resetFlags)
+	}()
 
-	retVal := m.Run()
-
-	// Reset configuration.
-	params.OverrideBeaconConfig(prevConfig)
-	os.Exit(retVal)
+	m.Run()
 }

beacon-chain/rpc/validator/validator_test.go

@@ -2,7 +2,6 @@ package validator
 
 import (
 	"io/ioutil"
-	"os"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/shared/params"
@@ -14,11 +13,8 @@ func TestMain(m *testing.M) {
 	logrus.SetOutput(ioutil.Discard)
 	// Use minimal config to reduce test setup time.
 	prevConfig := params.BeaconConfig().Copy()
+	defer params.OverrideBeaconConfig(prevConfig)
 	params.OverrideBeaconConfig(params.MinimalSpecConfig())
 
-	retVal := m.Run()
-
-	// Reset configuration.
-	params.OverrideBeaconConfig(prevConfig)
-	os.Exit(retVal)
+	m.Run()
 }

beacon-chain/state/stateutil/stateutil_test.go

@@ -1,7 +1,6 @@
 package stateutil_test
 
 import (
-	"os"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/shared/featureconfig"
@@ -10,8 +9,5 @@ import (
 func TestMain(m *testing.M) {
 	resetCfg := featureconfig.InitWithReset(&featureconfig.Flags{EnableSSZCache: true})
 	defer resetCfg()
-	code := m.Run()
-	// os.Exit will prevent defer from being called
-	resetCfg()
-	os.Exit(code)
+	m.Run()
 }

beacon-chain/sync/initial-sync/initial_sync_test.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"fmt"
 	"io/ioutil"
-	"os"
 	"sync"
 	"testing"
 	"time"
@@ -69,11 +68,8 @@ func TestMain(m *testing.M) {
 	defer func() {
 		flags.Init(resetFlags)
 	}()
-	code := m.Run()
-	// os.Exit will prevent defer from being called
-	resetCfg()
-	flags.Init(resetFlags)
-	os.Exit(code)
+
+	m.Run()
 }
 
 func initializeTestServices(t *testing.T, blocks []uint64, peers []*peerData) (*mock.ChainService, *p2pt.TestP2P, db.Database) {

beacon-chain/sync/sync_test.go

@@ -2,7 +2,6 @@ package sync
 
 import (
 	"io/ioutil"
-	"os"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/beacon-chain/flags"
@@ -13,10 +12,14 @@ func TestMain(m *testing.M) {
 	logrus.SetLevel(logrus.DebugLevel)
 	logrus.SetOutput(ioutil.Discard)
 
+	resetFlags := flags.Get()
 	flags.Init(&flags.GlobalFlags{
 		BlockBatchLimit:            64,
 		BlockBatchLimitBurstFactor: 10,
 	})
+	defer func() {
+		flags.Init(resetFlags)
+	}()
 
-	os.Exit(m.Run())
+	m.Run()
 }

shared/aggregation/attestations/attestations_test.go

@@ -3,7 +3,6 @@ package attestations
 import (
 	"fmt"
 	"io/ioutil"
-	"os"
 	"sort"
 	"testing"
 
@@ -26,10 +25,7 @@ func TestMain(m *testing.M) {
 		AttestationAggregationStrategy: string(MaxCoverAggregation),
 	})
 	defer resetCfg()
-	code := m.Run()
-	// os.Exit will prevent defer from being called
-	resetCfg()
-	os.Exit(code)
+	m.Run()
 }
 
 func TestAggregateAttestations_AggregatePair(t *testing.T) {

shared/slotutil/slotutil_test.go

@@ -2,7 +2,6 @@ package slotutil
 
 import (
 	"io/ioutil"
-	"os"
 	"testing"
 
 	"github.com/sirupsen/logrus"
@@ -12,5 +11,5 @@ func TestMain(m *testing.M) {
 	logrus.SetLevel(logrus.DebugLevel)
 	logrus.SetOutput(ioutil.Discard)
 
-	os.Exit(m.Run())
+	m.Run()
 }

slasher/beaconclient/service_test.go

@@ -2,7 +2,6 @@ package beaconclient
 
 import (
 	"io/ioutil"
-	"os"
 	"testing"
 
 	"github.com/sirupsen/logrus"
@@ -17,5 +16,5 @@ func TestMain(m *testing.M) {
 	logrus.SetLevel(logrus.DebugLevel)
 	logrus.SetOutput(ioutil.Discard)
 
-	os.Exit(m.Run())
+	m.Run()
 }

slasher/db/kv/kv_test.go

@@ -18,7 +18,7 @@ func TestMain(m *testing.M) {
 	logrus.SetLevel(logrus.DebugLevel)
 	logrus.SetOutput(ioutil.Discard)
 
-	os.Exit(m.Run())
+	m.Run()
 }
 
 func setupDB(t testing.TB) *Store {

slasher/detection/attestations/attestations_test.go

@@ -2,7 +2,6 @@ package attestations
 
 import (
 	"io/ioutil"
-	"os"
 	"testing"
 
 	"github.com/sirupsen/logrus"
@@ -12,5 +11,5 @@ func TestMain(m *testing.M) {
 	logrus.SetLevel(logrus.DebugLevel)
 	logrus.SetOutput(ioutil.Discard)
 
-	os.Exit(m.Run())
+	m.Run()
 }

slasher/detection/proposals/proposals_test.go

@@ -2,7 +2,6 @@ package proposals
 
 import (
 	"io/ioutil"
-	"os"
 	"testing"
 
 	"github.com/sirupsen/logrus"
@@ -12,5 +11,5 @@ func TestMain(m *testing.M) {
 	logrus.SetLevel(logrus.DebugLevel)
 	logrus.SetOutput(ioutil.Discard)
 
-	os.Exit(m.Run())
+	m.Run()
 }

slasher/node/node_test.go

@@ -22,7 +22,7 @@ func TestMain(m *testing.M) {
 	logrus.SetLevel(logrus.DebugLevel)
 	logrus.SetOutput(ioutil.Discard)
 
-	os.Exit(m.Run())
+	m.Run()
 }
 
 // Test that slasher node can close.

slasher/rpc/rpc_test.go

@@ -2,7 +2,6 @@ package rpc
 
 import (
 	"io/ioutil"
-	"os"
 	"testing"
 
 	"github.com/sirupsen/logrus"
@@ -12,5 +11,5 @@ func TestMain(m *testing.M) {
 	logrus.SetLevel(logrus.DebugLevel)
 	logrus.SetOutput(ioutil.Discard)
 
-	os.Exit(m.Run())
+	m.Run()
 }

tools/bootnode/bootnode_test.go

@@ -5,7 +5,6 @@ import (
 	"crypto/rand"
 	"fmt"
 	"io/ioutil"
-	"os"
 	"testing"
 	"time"
 
@@ -23,7 +22,7 @@ func TestMain(m *testing.M) {
 	logrus.SetLevel(logrus.DebugLevel)
 	logrus.SetOutput(ioutil.Discard)
 
-	os.Exit(m.Run())
+	m.Run()
 }
 
 func TestBootnode_OK(t *testing.T) {

tools/sendDepositTx/sendDeposits_test.go

@@ -5,7 +5,6 @@ import (
 	"encoding/binary"
 	"fmt"
 	"io/ioutil"
-	"os"
 	"testing"
 	"time"
 
@@ -26,7 +25,7 @@ func TestMain(m *testing.M) {
 	logrus.SetLevel(logrus.DebugLevel)
 	logrus.SetOutput(ioutil.Discard)
 
-	os.Exit(m.Run())
+	m.Run()
 }
 
 func sendDeposits(t *testing.T, testAcc *contracts.TestAccount,

validator/client/service_test.go

@@ -23,10 +23,7 @@ func TestMain(m *testing.M) {
 		}
 	}
 	defer cleanup()
-	code := m.Run()
-	// os.Exit will prevent defer from being called
-	cleanup()
-	os.Exit(code)
+	m.Run()
 }
 
 func TestStop_CancelsContext(t *testing.T) {