[#64] object: move package from neofs-api-go

Also, remove deprecated method.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>

object/type_test.go

@@ -0,0 +1,79 @@
+package object_test
+
+import (
+	"testing"
+
+	v2object "github.com/nspcc-dev/neofs-api-go/v2/object"
+	"github.com/nspcc-dev/neofs-sdk-go/object"
+	"github.com/stretchr/testify/require"
+)
+
+func TestType_ToV2(t *testing.T) {
+	typs := []struct {
+		t  object.Type
+		t2 v2object.Type
+	}{
+		{
+			t:  object.TypeRegular,
+			t2: v2object.TypeRegular,
+		},
+		{
+			t:  object.TypeTombstone,
+			t2: v2object.TypeTombstone,
+		},
+		{
+			t:  object.TypeStorageGroup,
+			t2: v2object.TypeStorageGroup,
+		},
+	}
+
+	for _, item := range typs {
+		t2 := item.t.ToV2()
+
+		require.Equal(t, item.t2, t2)
+
+		require.Equal(t, item.t, object.TypeFromV2(item.t2))
+	}
+}
+
+func TestType_String(t *testing.T) {
+	toPtr := func(v object.Type) *object.Type {
+		return &v
+	}
+
+	testEnumStrings(t, new(object.Type), []enumStringItem{
+		{val: toPtr(object.TypeTombstone), str: "TOMBSTONE"},
+		{val: toPtr(object.TypeStorageGroup), str: "STORAGE_GROUP"},
+		{val: toPtr(object.TypeRegular), str: "REGULAR"},
+	})
+}
+
+type enumIface interface {
+	FromString(string) bool
+	String() string
+}
+
+type enumStringItem struct {
+	val enumIface
+	str string
+}
+
+func testEnumStrings(t *testing.T, e enumIface, items []enumStringItem) {
+	for _, item := range items {
+		require.Equal(t, item.str, item.val.String())
+
+		s := item.val.String()
+
+		require.True(t, e.FromString(s), s)
+
+		require.EqualValues(t, item.val, e, item.val)
+	}
+
+	// incorrect strings
+	for _, str := range []string{
+		"some string",
+		"undefined",
+	} {
+		require.False(t, e.FromString(str))
+	}
+}