diff --git a/scripts/test.sh b/scripts/test.sh
index b40025d..16a5577 100755
--- a/scripts/test.sh
+++ b/scripts/test.sh
@@ -42,7 +42,13 @@ if [ $HAS_FRONTEND -eq 1 ]; then (cd frontend && npm run lint); else echo "[test
 
 echo "[test.sh] 4/6 unit + integration"
 if [ $HAS_BACKEND -eq 1 ]; then (cd backend && mvn -B test); else echo "[test.sh] skip backend test"; fi
-if [ $HAS_FRONTEND -eq 1 ]; then (cd frontend && npm test -- --run); else echo "[test.sh] skip frontend test"; fi
+if [ $HAS_FRONTEND -eq 0 ]; then
+  echo "[test.sh] skip frontend test"
+elif node -e "process.exit(require('./frontend/package.json').scripts?.test?0:1)" >/dev/null 2>&1; then
+  (cd frontend && npm test -- --run)
+else
+  echo "[test.sh] skip frontend test (no 'test' script in frontend/package.json)"
+fi
 
 echo "[test.sh] 5/6 E2E"
 echo "[test.sh] e2e 略"