refactor: cleanup and add stub

internal/badger_test.go

@@ -25,7 +25,6 @@ func newTestStore(t *testing.T) *badgerStore {
 	return store
 }
 
-// generic subtest runner
 type subtest struct {
 	name string
 	run  func(t *testing.T)

internal/route_cache_test.go

@@ -1 +1,7 @@
 package internal
+
+import "testing"
+
+func TestNewRouteCache(t *testing.T) {
+	// TODO: implement
+}