Allow unauthenticated call to version method (#135)

* allow unauthenticated call to version method

* add test case for grpc version endpoint

internal/registry/grpc.go

@@ -33,6 +33,7 @@ var publicMethods = map[string]bool{
 	"/v1.V1/ListSources": true,
 	"/v1.V1/Login":       true,
 	"/v1.V1/Signup":      true,
+	"/v1.V1/Version":     true,
 }
 
 var tokenAuthMethods = map[string]bool{

internal/registry/grpc_test.go

@@ -9,11 +9,13 @@ import (
 	"github.com/infrahq/infra/internal/generate"
 	"github.com/infrahq/infra/internal/registry/mocks"
 	v1 "github.com/infrahq/infra/internal/v1"
+	"github.com/infrahq/infra/internal/version"
 	"github.com/stretchr/testify/mock"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/emptypb"
 	"gorm.io/gorm"
 )
 
@@ -596,3 +598,37 @@ func TestSignupWithExistingAdmin(t *testing.T) {
 	assert.Equal(t, status.Code(err), codes.InvalidArgument)
 	assert.Equal(t, res, nil)
 }
+
+func TestVersion(t *testing.T) {
+	db, err := NewDB("file::memory:")
+	if err != nil {
+		t.Error(err)
+	}
+
+	server := &V1Server{db: db}
+
+	res, err := server.Version(context.Background(), &emptypb.Empty{})
+	assert.Equal(t, status.Code(err), codes.OK)
+	assert.Equal(t, res.Version, version.Version)
+}
+
+func TestVersionPublicAuth(t *testing.T) {
+	db, err := NewDB("file::memory:")
+	if err != nil {
+		t.Error(err)
+	}
+
+	server := &V1Server{db: db}
+
+	unaryInfo := &grpc.UnaryServerInfo{
+		FullMethod: "/v1.V1/Version",
+	}
+
+	unaryHandler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return server.Version(ctx, req.(*emptypb.Empty))
+	}
+
+	res, err := authInterceptor(db)(context.Background(), &emptypb.Empty{}, unaryInfo, unaryHandler)
+	assert.Equal(t, status.Code(err), codes.OK)
+	assert.Equal(t, res.(*v1.VersionResponse).Version, version.Version)
+}