.golangci.yml

@@ -87,5 +87,7 @@ linters:
     - perfsprint
     - testifylint
     - protogetter
+    - intrange
+    - tenv
   disable-all: true
   fast: false

cmd/frostfs-adm/internal/modules/config/config.go

@@ -128,7 +128,7 @@ func generateConfigExample(appDir string, credSize int) (string, error) {
 	tmpl.AlphabetDir = filepath.Join(appDir, "alphabet-wallets")
 
 	var i innerring.GlagoliticLetter
-	for i = 0; i < innerring.GlagoliticLetter(credSize); i++ {
+	for i = range innerring.GlagoliticLetter(credSize) {
 		tmpl.Glagolitics = append(tmpl.Glagolitics, i.String())
 	}
 

cmd/frostfs-adm/internal/modules/morph/generate/generate_test.go

@@ -63,7 +63,7 @@ func TestGenerateAlphabet(t *testing.T) {
 	buf.Reset()
 	v.Set(commonflags.AlphabetWalletsFlag, walletDir)
 	require.NoError(t, GenerateAlphabetCmd.Flags().Set(commonflags.AlphabetSizeFlag, strconv.FormatUint(size, 10)))
-	for i := uint64(0); i < size; i++ {
+	for i := range uint64(size) {
 		buf.WriteString(strconv.FormatUint(i, 10) + "\r")
 	}
 

cmd/frostfs-cli/internal/client/client.go

@@ -659,9 +659,7 @@ func SearchObjects(ctx context.Context, prm SearchObjectsPrm) (*SearchObjectsRes
 
 	for {
 		n, ok = rdr.Read(buf)
-		for i := range n {
-			list = append(list, buf[i])
-		}
+		list = append(list, buf[:n]...)
 		if !ok {
 			break
 		}

cmd/frostfs-lens/internal/schema/metabase/records/util.go

@@ -11,7 +11,7 @@ func DecodeOIDs(data []byte) ([]oid.ID, error) {
 	size := r.ReadVarUint()
 	oids := make([]oid.ID, size)
 
-	for i := uint64(0); i < size; i++ {
+	for i := range size {
 		if err := oids[i].Decode(r.ReadVarBytes()); err != nil {
 			return nil, err
 		}

cmd/frostfs-node/config/calls_test.go

@@ -1,7 +1,6 @@
 package config_test
 
 import (
-	"os"
 	"strings"
 	"testing"
 
@@ -38,8 +37,7 @@ func TestConfigEnv(t *testing.T) {
 
 	envName := strings.ToUpper(
 		strings.Join([]string{config.EnvPrefix, section, name}, configViper.EnvSeparator))
-	err := os.Setenv(envName, value)
-	require.NoError(t, err)
+	t.Setenv(envName, value)
 
 	c := configtest.EmptyConfig()
 

cmd/frostfs-node/config/test/config.go

@@ -11,8 +11,6 @@ import (
 )
 
 func fromFile(path string) *config.Config {
-	os.Clearenv() // ENVs have priority over config files, so we do this in tests
-
 	return config.New(path, "", "")
 }
 
@@ -40,15 +38,6 @@ func ForEachFileType(pref string, f func(*config.Config)) {
 
 // ForEnvFileType creates config from `<pref>.env` file.
 func ForEnvFileType(t testing.TB, pref string, f func(*config.Config)) {
-	envs := os.Environ()
-	t.Cleanup(func() {
-		os.Clearenv()
-		for _, env := range envs {
-			keyValue := strings.Split(env, "=")
-			os.Setenv(keyValue[0], keyValue[1])
-		}
-	})
-
 	f(fromEnvFile(t, pref+".env"))
 }
 
@@ -73,7 +62,6 @@ func loadEnv(t testing.TB, path string) {
 
 		v = strings.Trim(v, `"`)
 
-		err = os.Setenv(k, v)
-		require.NoError(t, err, "can't set environment variable")
+		t.Setenv(k, v)
 	}
 }

pkg/local_object_storage/blobstor/blobovniczatree/rebuild_test.go

@@ -61,7 +61,7 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		require.NoError(t, b.Init())
 
 		storageIDs := make(map[oid.Address][]byte)
-		for i := 0; i < 100; i++ {
+		for range 100 {
 			obj := blobstortest.NewObject(64 * 1024) // 64KB object
 			data, err := obj.Marshal()
 			require.NoError(t, err)
@@ -168,7 +168,7 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 
 		storageIDs := make(map[oid.Address][]byte)
 		toDelete := make(map[oid.Address][]byte)
-		for i := 0; i < 100; i++ { // 2 objects for one blobovnicza, so 50 DBs total will be created
+		for i := range 100 { // 2 objects for one blobovnicza, so 50 DBs total will be created
 			obj := blobstortest.NewObject(64 * 1024)
 			data, err := obj.Marshal()
 			require.NoError(t, err)
@@ -236,7 +236,7 @@ func TestBlobovniczaTreeFillPercentRebuild(t *testing.T) {
 		require.NoError(t, b.Init())
 
 		storageIDs := make(map[oid.Address][]byte)
-		for i := 0; i < 100; i++ { // 2 objects for one blobovnicza, so 50 DBs total will be created
+		for range 100 { // 2 objects for one blobovnicza, so 50 DBs total will be created
 			obj := blobstortest.NewObject(64 * 1024)
 			data, err := obj.Marshal()
 			require.NoError(t, err)

pkg/local_object_storage/blobstor/iterate_test.go

@@ -47,7 +47,7 @@ func TestIterateObjects(t *testing.T) {
 
 	mObjs := make(map[string]addrData)
 
-	for i := uint64(0); i < objNum; i++ {
+	for i := range uint64(objNum) {
 		sz := smalSz
 
 		big := i < objNum/2

pkg/local_object_storage/engine/error_test.go

@@ -151,7 +151,7 @@ func TestErrorReporting(t *testing.T) {
 			checkShardState(t, te.ng, te.shards[1].id, 0, mode.ReadWrite)
 		}
 
-		for i := uint32(0); i < 2; i++ {
+		for i := range uint32(2) {
 			_, err = te.ng.Get(context.Background(), GetPrm{addr: object.AddressOf(obj)})
 			require.Error(t, err)
 			checkShardState(t, te.ng, te.shards[0].id, errThreshold+i, mode.ReadOnly)

pkg/local_object_storage/pilorama/forest_test.go

@@ -1081,7 +1081,7 @@ func prepareRandomTree(nodeCount, opCount int) []Move {
 }
 
 func compareForests(t *testing.T, expected, actual Forest, cid cidSDK.ID, treeID string, nodeCount int) {
-	for i := uint64(0); i < uint64(nodeCount); i++ {
+	for i := range uint64(nodeCount) {
 		expectedMeta, expectedParent, err := expected.TreeGetMeta(context.Background(), cid, treeID, i)
 		require.NoError(t, err)
 		actualMeta, actualParent, err := actual.TreeGetMeta(context.Background(), cid, treeID, i)

pkg/local_object_storage/shard/control_test.go

@@ -216,7 +216,7 @@ func TestRefillMetabase(t *testing.T) {
 	locked := make([]oid.ID, 1, 2)
 	locked[0] = oidtest.ID()
 	cnrLocked := cidtest.ID()
-	for i := uint64(0); i < objNum; i++ {
+	for range objNum {
 		obj := objecttest.Object()
 		obj.SetType(objectSDK.TypeRegular)
 

pkg/local_object_storage/writecache/limiter_test.go

@@ -14,7 +14,7 @@ func TestLimiter(t *testing.T) {
 	l := newFlushLimiter(uint64(maxSize))
 	var currSize atomic.Int64
 	var eg errgroup.Group
-	for i := 0; i < 10_000; i++ {
+	for range 10_000 {
 		eg.Go(func() error {
 			defer l.release(single)
 			defer currSize.Add(-1)

pkg/morph/timer/block_test.go

@@ -8,7 +8,7 @@ import (
 )
 
 func tickN(t *timer.BlockTimer, n uint32) {
-	for i := uint32(0); i < n; i++ {
+	for range n {
 		t.Tick(0)
 	}
 }

pkg/services/object/acl/v2/util_test.go

@@ -50,7 +50,7 @@ func testGenerateMetaHeader(depth uint32, b *acl.BearerToken, s *session.Token)
 	metaHeader.SetBearerToken(b)
 	metaHeader.SetSessionToken(s)
 
-	for i := uint32(0); i < depth; i++ {
+	for range depth {
 		link := metaHeader
 		metaHeader = new(session.RequestMetaHeader)
 		metaHeader.SetOrigin(link)

scripts/populate-metabase/internal/generate.go

@@ -19,7 +19,7 @@ import (
 
 func GeneratePayloadPool(count uint, size uint) [][]byte {
 	var pool [][]byte
-	for i := uint(0); i < count; i++ {
+	for range count {
 		payload := make([]byte, size)
 		_, _ = rand.Read(payload)
 
@@ -30,8 +30,8 @@ func GeneratePayloadPool(count uint, size uint) [][]byte {
 
 func GenerateAttributePool(count uint) []objectSDK.Attribute {
 	var pool []objectSDK.Attribute
-	for i := uint(0); i < count; i++ {
-		for j := uint(0); j < count; j++ {
+	for i := range count {
+		for j := range count {
 			attr := *objectSDK.NewAttribute()
 			attr.SetKey(fmt.Sprintf("key%d", i))
 			attr.SetValue(fmt.Sprintf("value%d", j))
@@ -43,7 +43,7 @@ func GenerateAttributePool(count uint) []objectSDK.Attribute {
 
 func GenerateOwnerPool(count uint) []user.ID {
 	var pool []user.ID
-	for i := uint(0); i < count; i++ {
+	for range count {
 		pool = append(pool, usertest.ID())
 	}
 	return pool
@@ -118,7 +118,7 @@ func WithPayloadFromPool(pool [][]byte) ObjectOption {
 func WithAttributesFromPool(pool []objectSDK.Attribute, count uint) ObjectOption {
 	return func(obj *objectSDK.Object) {
 		var attrs []objectSDK.Attribute
-		for i := uint(0); i < count; i++ {
+		for range count {
 			attrs = append(attrs, pool[rand.Intn(len(pool))])
 		}
 		obj.SetAttributes(attrs...)

scripts/populate-metabase/internal/populate.go

@@ -29,7 +29,7 @@ func PopulateWithObjects(
 ) {
 	digits := "0123456789"
 
-	for i := uint(0); i < count; i++ {
+	for range count {
 		obj := factory()
 
 		id := []byte(fmt.Sprintf(
@@ -59,7 +59,7 @@ func PopulateWithBigObjects(
 	count uint,
 	factory func() *objectSDK.Object,
 ) {
-	for i := uint(0); i < count; i++ {
+	for range count {
 		group.Go(func() error {
 			if err := populateWithBigObject(ctx, db, factory); err != nil {
 				return fmt.Errorf("couldn't put a big object: %w", err)
@@ -154,7 +154,7 @@ func PopulateGraveyard(
 		wg := &sync.WaitGroup{}
 		wg.Add(int(count))
 
-		for i := uint(0); i < count; i++ {
+		for range count {
 			obj := factory()
 
 			prm := meta.PutPrm{}
@@ -226,7 +226,7 @@ func PopulateLocked(
 		wg := &sync.WaitGroup{}
 		wg.Add(int(count))
 
-		for i := uint(0); i < count; i++ {
+		for range count {
 			defer wg.Done()
 
 			obj := factory()

scripts/populate-metabase/main.go

@@ -116,7 +116,7 @@ func populate() (err error) {
 	eg, ctx := errgroup.WithContext(ctx)
 	eg.SetLimit(int(jobs))
 
-	for i := uint(0); i < numContainers; i++ {
+	for range numContainers {
 		cid := cidtest.ID()
 
 		for _, typ := range types {