diff --git a/.github/workflows/checkin.yml b/.github/workflows/checkin.yml
index 5a35c14..f520fa1 100644
--- a/.github/workflows/checkin.yml
+++ b/.github/workflows/checkin.yml
@@ -20,3 +20,6 @@ jobs:
         || (echo "##[error] found changed files after build. please 'npm run build && npm run format'" \
                  "and check in all changes" \
             && exit 1)
+
+    - name: "npm test"
+      run: npm test