test(ci): cover Helm Recreate strategy rendering (#2752)

.github/workflows/helm-package.yml

@@ -80,6 +80,9 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@v4.3.0
 
+      - name: Test Helm Chart Templates
+        run: ./scripts/test_helm_templates.sh
+
       - name: Package Helm Chart
         run: |
           set -eux

scripts/test_helm_templates.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
+CHART_DIR="$ROOT_DIR/helm/rustfs"
+
+render_standalone_deployment() {
+  helm template rustfs "$CHART_DIR" \
+    --namespace rustfs \
+    --set mode.distributed.enabled=false \
+    --set mode.standalone.enabled=true \
+    "$@" |
+    awk '
+      /^# Source: rustfs\/templates\/deployment.yaml$/ { in_deployment = 1 }
+      in_deployment && /^---$/ { exit }
+      in_deployment { print }
+    '
+}
+
+recreate_output=$(render_standalone_deployment --set mode.standalone.strategy.type=Recreate)
+grep -q "type: Recreate" <<<"$recreate_output"
+if grep -q "rollingUpdate:" <<<"$recreate_output"; then
+  echo "Recreate strategy must not render rollingUpdate fields" >&2
+  exit 1
+fi
+
+rolling_output=$(render_standalone_deployment)
+grep -q "type: RollingUpdate" <<<"$rolling_output"
+grep -q "rollingUpdate:" <<<"$rolling_output"