Add test for redis-cluster/redis values conflict

Signed-off-by: justusbunsi <sk.bunsenbrenner@gmail.com>

Makefile

@@ -9,7 +9,7 @@ readme: prepare-environment
 
 .PHONY: unittests
 unittests:
-	helm unittest --strict -f 'unittests/**/*.yaml' -f 'unittests/dependency-major-image-check.yaml' ./
+	helm unittest --strict -f 'unittests/**/*.yaml' -f 'unittests/dependency-major-image-check.yaml' -f 'unittests/values-conflicting-checks.yaml' ./
 
 .PHONY: helm
 update-helm-dependencies:

unittests/values-conflicting-checks.yaml

@@ -0,0 +1,14 @@
+suite: Values conflicting checks
+release:
+  name: gitea-unittests
+  namespace: testing
+tests:
+  - it: fails when trying to configure redis and redis-cluster the same time
+    set:
+      redis-cluster:
+        enabled: true
+      redis:
+        enabled: true
+    asserts:
+      - failedTemplate:
+          errorMessage: redis and redis-cluster cannot be enabled at the same time. Please only choose one.