[#135] metabase: Implement benchmarking tests

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/local_object_storage/metabase/delete_test.go

@@ -0,0 +1,66 @@
+package meta
+
+import (
+	"os"
+	"testing"
+
+	"github.com/nspcc-dev/neofs-api-go/pkg/object"
+	"github.com/stretchr/testify/require"
+	"go.etcd.io/bbolt"
+)
+
+func BenchmarkDB_Delete(b *testing.B) {
+	path := "delete_test.db"
+
+	bdb, err := bbolt.Open(path, 0600, nil)
+	require.NoError(b, err)
+
+	defer func() {
+		bdb.Close()
+		os.Remove(path)
+	}()
+
+	db := NewDB(bdb)
+
+	var existingAddr *object.Address
+
+	for i := 0; i < 10; i++ {
+		obj := generateObject(b, testPrm{})
+
+		existingAddr = obj.Address()
+
+		require.NoError(b, db.Put(obj))
+	}
+
+	b.Run("existing address", func(b *testing.B) {
+		b.ReportAllocs()
+		b.ResetTimer()
+
+		for i := 0; i < b.N; i++ {
+			err := db.Delete(existingAddr)
+
+			b.StopTimer()
+			require.NoError(b, err)
+			b.StartTimer()
+		}
+	})
+
+	b.Run("non-existing address", func(b *testing.B) {
+		b.ReportAllocs()
+		b.ResetTimer()
+
+		for i := 0; i < b.N; i++ {
+			b.StopTimer()
+			addr := object.NewAddress()
+			addr.SetContainerID(testCID())
+			addr.SetObjectID(testOID())
+			b.StartTimer()
+
+			err := db.Delete(addr)
+
+			b.StopTimer()
+			require.NoError(b, err)
+			b.StartTimer()
+		}
+	})
+}