[#1491] engine/test: Move BenchmarkExists to exists_test.go

Move `BenchmarkExists` from `engine_test.go` to `exists_test.go`
for better organization and clarity.

Signed-off-by: Aleksey Savchuk <a.savchuk@yadro.com>

pkg/local_object_storage/engine/engine_test.go

@@ -10,17 +10,11 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/blobovniczatree"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/teststore"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil"
 	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/pilorama"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger/test"
-	cidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id/test"
 	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
-	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
-	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
-	"git.frostfs.info/TrueCloudLab/hrw"
-	"github.com/panjf2000/ants/v2"
 	"github.com/stretchr/testify/require"
 )
 
@@ -30,44 +24,6 @@ func (s epochState) CurrentEpoch() uint64 {
 	return 0
 }
 
-func BenchmarkExists(b *testing.B) {
-	b.Run("2 shards", func(b *testing.B) {
-		benchmarkExists(b, 2)
-	})
-	b.Run("4 shards", func(b *testing.B) {
-		benchmarkExists(b, 4)
-	})
-	b.Run("8 shards", func(b *testing.B) {
-		benchmarkExists(b, 8)
-	})
-}
-
-func benchmarkExists(b *testing.B, shardNum int) {
-	e := testNewEngine(b).setShardsNum(b, shardNum).engine
-	defer func() { require.NoError(b, e.Close(context.Background())) }()
-
-	addr := oidtest.Address()
-	for range 100 {
-		obj := testutil.GenerateObjectWithCID(cidtest.ID())
-		err := Put(context.Background(), e, obj, false)
-		if err != nil {
-			b.Fatal(err)
-		}
-	}
-
-	b.ReportAllocs()
-	b.ResetTimer()
-	for range b.N {
-		var shPrm shard.ExistsPrm
-		shPrm.Address = addr
-		shPrm.ParentAddress = oid.Address{}
-		ok, _, err := e.exists(context.Background(), shPrm)
-		if err != nil || ok {
-			b.Fatalf("%t %v", ok, err)
-		}
-	}
-}
-
 type testEngineWrapper struct {
 	engine   *StorageEngine
 	shardIDs []*shard.ID

pkg/local_object_storage/engine/exists_test.go

@@ -0,0 +1,51 @@
+package engine
+
+import (
+	"context"
+	"testing"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard"
+	cidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id/test"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
+	"github.com/stretchr/testify/require"
+)
+
+func BenchmarkExists(b *testing.B) {
+	b.Run("2 shards", func(b *testing.B) {
+		benchmarkExists(b, 2)
+	})
+	b.Run("4 shards", func(b *testing.B) {
+		benchmarkExists(b, 4)
+	})
+	b.Run("8 shards", func(b *testing.B) {
+		benchmarkExists(b, 8)
+	})
+}
+
+func benchmarkExists(b *testing.B, shardNum int) {
+	e := testNewEngine(b).setShardsNum(b, shardNum).engine
+	defer func() { require.NoError(b, e.Close(context.Background())) }()
+
+	addr := oidtest.Address()
+	for range 100 {
+		obj := testutil.GenerateObjectWithCID(cidtest.ID())
+		err := Put(context.Background(), e, obj, false)
+		if err != nil {
+			b.Fatal(err)
+		}
+	}
+
+	b.ReportAllocs()
+	b.ResetTimer()
+	for range b.N {
+		var shPrm shard.ExistsPrm
+		shPrm.Address = addr
+		shPrm.ParentAddress = oid.Address{}
+		ok, _, err := e.exists(context.Background(), shPrm)
+		if err != nil || ok {
+			b.Fatalf("%t %v", ok, err)
+		}
+	}
+}