diff --git a/ozgcloud-elasticsearch-operator/src/test/helm/deployment_template_spec_test.yaml b/ozgcloud-elasticsearch-operator/src/test/helm/deployment_template_spec_test.yaml
index 84ae09f8e5e410873c277df93c517d2b66730632..8ec9dbacd2267f9b2579ca4c5e2e57330edf10f6 100644
--- a/ozgcloud-elasticsearch-operator/src/test/helm/deployment_template_spec_test.yaml
+++ b/ozgcloud-elasticsearch-operator/src/test/helm/deployment_template_spec_test.yaml
@@ -49,4 +49,18 @@ tests:
     asserts:
       - equal:
           path: spec.template.spec.restartPolicy
-          value: Always
\ No newline at end of file
+          value: Always
+
+  - it: validate dns config
+    set:
+      image:
+        name: hase
+        tag: latest
+      imagePullSecret: imagePullSecret
+    asserts:
+      - equal:
+          path: spec.template.spec.dnsConfig
+          value: {}
+      - equal:
+          path: spec.template.spec.dnsPolicy
+          value: ClusterFirst
\ No newline at end of file