[#561] acl: Add tests for request meta header traverser

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

pkg/services/object/acl/acl_test.go

@@ -0,0 +1,36 @@
+package acl
+
+import (
+	"testing"
+
+	"github.com/nspcc-dev/neofs-api-go/v2/acl"
+	acltest "github.com/nspcc-dev/neofs-api-go/v2/acl/test"
+	"github.com/nspcc-dev/neofs-api-go/v2/session"
+	sessiontest "github.com/nspcc-dev/neofs-api-go/v2/session/test"
+	"github.com/stretchr/testify/require"
+)
+
+func TestOriginalTokens(t *testing.T) {
+	sToken := sessiontest.GenerateSessionToken(false)
+	bToken := acltest.GenerateBearerToken(false)
+
+	for i := 0; i < 10; i++ {
+		metaHeaders := testGenerateMetaHeader(uint32(i), bToken, sToken)
+		require.Equal(t, sToken, originalSessionToken(metaHeaders), i)
+		require.Equal(t, bToken, originalBearerToken(metaHeaders), i)
+	}
+}
+
+func testGenerateMetaHeader(depth uint32, b *acl.BearerToken, s *session.SessionToken) *session.RequestMetaHeader {
+	metaHeader := new(session.RequestMetaHeader)
+	metaHeader.SetBearerToken(b)
+	metaHeader.SetSessionToken(s)
+
+	for i := uint32(0); i < depth; i++ {
+		link := metaHeader
+		metaHeader = new(session.RequestMetaHeader)
+		metaHeader.SetOrigin(link)
+	}
+
+	return metaHeader
+}