diff --git a/knotserver/git/language_test.go b/knotserver/git/language_test.go
new file mode 100644
--- /dev/null
+++ b/knotserver/git/language_test.go
@@ -0,0 +1,57 @@
+package git
+
+import (
+	"context"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"github.com/stretchr/testify/suite"
+)
+
+type LanguageSuite struct {
+	suite.Suite
+	*RepoSuite
+}
+
+func TestLanguageSuite(t *testing.T) {
+	t.Parallel()
+	suite.Run(t, new(LanguageSuite))
+}
+
+func (s *LanguageSuite) SetupTest() {
+	s.RepoSuite = NewRepoSuite(s.T())
+}
+
+func (s *LanguageSuite) TearDownTest() {
+	s.RepoSuite.cleanup()
+}
+
+func (s *LanguageSuite) TestAnalyzeLanguagesSkipsUnknownGodotMetadata() {
+	s.init()
+
+	gdscript := "extends CharacterBody3D\n\nfunc _ready():\n\tpass\n"
+	s.commitFile("code/player.gd", gdscript, "Add GDScript")
+	s.commitFile("code/player.gd.uid", "uid://b5gy7avoc3cs1\n", "Add Godot uid")
+	s.commitFile(
+		"assets/player.glb.import",
+		"[remap]\n\nimporter=\"scene\"\n\n[params]\n"+strings.Repeat("animation/import=true\n", 512),
+		"Add Godot import metadata",
+	)
+	s.commitFile(
+		"scenes/player.tscn",
+		"[gd_scene format=4]\n\n[sub_resource type=\"ArrayMesh\"]\n"+strings.Repeat("vertex_data = PackedByteArray(\"AAAA\")\n", 512),
+		"Add Godot scene",
+	)
+
+	gr, err := Open(s.repo.path, "")
+	require.NoError(s.T(), err)
+
+	langs, err := gr.AnalyzeLanguages(context.Background())
+	require.NoError(s.T(), err)
+
+	require.NotContains(s.T(), langs, "")
+	require.Equal(s.T(), LangBreakdown{
+		"GDScript": int64(len(gdscript)),
+	}, langs)
+}