feat: test of templated extra volume name

Author: Kyrremann

charts/ingress-nginx/tests/default-backend-deployment_test.yaml

@@ -196,3 +196,25 @@ tests:
       - equal:
           path: spec.template.spec.automountServiceAccountToken
           value: false
+
+  - it: should create a Deployment with extra volumes if `defaultBackend.extraVolumes` is set
+    set:
+      defaultBackend.enabled: true
+      defaultBackend.extraVolumes:
+        - name: extra-volume
+            configMap:
+              name: "{{ .Release.Name }}"
+      defaultBackend.extraVolumeMounts:
+        - name: extra-volume
+          mountPath: /extra
+    asserts:
+      - equal:
+          path: spec.template.spec.volumes
+          value:
+            - name: extra-volume
+                configMap:
+                  name: RELEASE-NAME
+      - equal:
+          path: spec.template.spec.containers[0].volumeMounts
+          value:
+            - name: extra-volume