diff --git a/pkg/audit/result_test.go b/pkg/audit/result_test.go
index 56e683c..4edd5fd 100644
--- a/pkg/audit/result_test.go
+++ b/pkg/audit/result_test.go
@@ -1,29 +1,16 @@
 package audit_test
 
 import (
-	"crypto/rand"
-	"crypto/sha256"
 	"testing"
 
 	"github.com/nspcc-dev/neofs-api-go/pkg"
 	"github.com/nspcc-dev/neofs-api-go/pkg/audit"
 	cidtest "github.com/nspcc-dev/neofs-api-go/pkg/container/id/test"
 	"github.com/nspcc-dev/neofs-api-go/pkg/object"
+	objecttest "github.com/nspcc-dev/neofs-api-go/pkg/object/test"
 	"github.com/stretchr/testify/require"
 )
 
-func testSHA256() (cs [sha256.Size]byte) {
-	_, _ = rand.Read(cs[:])
-	return
-}
-
-func testOID() *object.ID {
-	id := object.NewID()
-	id.SetSHA256(testSHA256())
-
-	return id
-}
-
 func TestResult(t *testing.T) {
 	r := audit.NewResult()
 	require.Equal(t, pkg.SDKVersion(), r.Version())
@@ -51,11 +38,11 @@ func TestResult(t *testing.T) {
 	r.SetRetries(retries)
 	require.Equal(t, retries, r.Retries())
 
-	passSG := []*object.ID{testOID(), testOID()}
+	passSG := []*object.ID{objecttest.GenerateID(), objecttest.GenerateID()}
 	r.SetPassSG(passSG)
 	require.Equal(t, passSG, r.PassSG())
 
-	failSG := []*object.ID{testOID(), testOID()}
+	failSG := []*object.ID{objecttest.GenerateID(), objecttest.GenerateID()}
 	r.SetFailSG(failSG)
 	require.Equal(t, failSG, r.FailSG())
 
@@ -85,8 +72,8 @@ func TestStorageGroupEncoding(t *testing.T) {
 	r.SetAuditEpoch(13)
 	r.SetContainerID(cidtest.Generate())
 	r.SetPublicKey([]byte{1, 2, 3})
-	r.SetPassSG([]*object.ID{testOID(), testOID()})
-	r.SetFailSG([]*object.ID{testOID(), testOID()})
+	r.SetPassSG([]*object.ID{objecttest.GenerateID(), objecttest.GenerateID()})
+	r.SetFailSG([]*object.ID{objecttest.GenerateID(), objecttest.GenerateID()})
 	r.SetRequests(3)
 	r.SetRetries(2)
 	r.SetHit(1)
diff --git a/pkg/storagegroup/storagegroup_test.go b/pkg/storagegroup/storagegroup_test.go
index 027c0f6..8da5785 100644
--- a/pkg/storagegroup/storagegroup_test.go
+++ b/pkg/storagegroup/storagegroup_test.go
@@ -7,6 +7,7 @@ import (
 
 	"github.com/nspcc-dev/neofs-api-go/pkg"
 	"github.com/nspcc-dev/neofs-api-go/pkg/object"
+	objecttest "github.com/nspcc-dev/neofs-api-go/pkg/object/test"
 	"github.com/nspcc-dev/neofs-api-go/pkg/storagegroup"
 	"github.com/stretchr/testify/require"
 )
@@ -23,13 +24,6 @@ func testChecksum() *pkg.Checksum {
 	return h
 }
 
-func testOID() *object.ID {
-	id := object.NewID()
-	id.SetSHA256(testSHA256())
-
-	return id
-}
-
 func TestStorageGroup(t *testing.T) {
 	sg := storagegroup.New()
 
@@ -45,7 +39,7 @@ func TestStorageGroup(t *testing.T) {
 	sg.SetExpirationEpoch(exp)
 	require.Equal(t, exp, sg.ExpirationEpoch())
 
-	members := []*object.ID{testOID(), testOID()}
+	members := []*object.ID{objecttest.GenerateID(), objecttest.GenerateID()}
 	sg.SetMembers(members)
 	require.Equal(t, members, sg.Members())
 }
@@ -55,7 +49,7 @@ func TestStorageGroupEncoding(t *testing.T) {
 	sg.SetValidationDataSize(13)
 	sg.SetValidationDataHash(testChecksum())
 	sg.SetExpirationEpoch(33)
-	sg.SetMembers([]*object.ID{testOID(), testOID()})
+	sg.SetMembers([]*object.ID{objecttest.GenerateID(), objecttest.GenerateID()})
 
 	t.Run("binary", func(t *testing.T) {
 		data, err := sg.Marshal()