Add Inner Ring code

pkg/core/object/headers/user_test.go

@@ -0,0 +1,45 @@
+package headers
+
+import (
+	"testing"
+
+	"github.com/nspcc-dev/neofs-node/pkg/core/object"
+	"github.com/stretchr/testify/require"
+)
+
+func TestUserHeader_Key(t *testing.T) {
+	h := new(UserHeader)
+
+	key := "random key"
+	h.SetKey(key)
+
+	require.Equal(t, key, h.Key())
+}
+
+func TestUserHeader_Value(t *testing.T) {
+	h := new(UserHeader)
+
+	val := "random value"
+	h.SetValue(val)
+
+	require.Equal(t, val, h.Value())
+}
+
+func TestNewUserHeader(t *testing.T) {
+	key := "user key"
+	val := "user val"
+
+	h := NewUserHeader(key, val)
+
+	require.True(t,
+		object.TypesEQ(
+			TypeUser,
+			h.Type(),
+		),
+	)
+
+	uh := h.Value().(*UserHeader)
+
+	require.Equal(t, key, uh.Key())
+	require.Equal(t, val, uh.Value())
+}