Adding simple helm CI (#1635)

Author: kfswain

Makefile

@@ -133,7 +133,7 @@ vet: ## Run go vet against code.
 	go vet ./...
 
 .PHONY: test
-test: generate fmt vet envtest image-build verify-crds ## Run tests.
+test: generate fmt vet envtest image-build verify-crds verify-helm-charts ## Run tests.
 	CGO_ENABLED=1 KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) --bin-dir $(LOCALBIN) -p path)" go test $$(go list ./... | grep -v /e2e | grep -v /conformance) -race -coverprofile cover.out
 
 .PHONY: test-unit
@@ -174,6 +174,10 @@ verify: vet fmt-verify generate ci-lint api-lint verify-all
 verify-crds: kubectl-validate
 	hack/verify-manifests.sh
 
+.PHONY: verify-helm-charts
+verify-helm-charts: helm-install
+	hack/verify-helm.sh
+
 # Run static analysis.
 .PHONY: verify-all
 verify-all:
@@ -423,8 +427,9 @@ $(GOLANGCI_API_LINT):
 yq: ## Download yq locally if necessary.
 	GOBIN=$(PROJECT_DIR)/bin GO111MODULE=on go install github.com/mikefarah/yq/v4@$(YQ_VERSION)
 
-.PHONY: helm
-helm: ## Download helm locally if necessary.
+.PHONY: helm-install
+helm-install: $(HELM) ## Download helm locally if necessary.
+$(HELM): $(LOCALBIN)
 	GOBIN=$(PROJECT_DIR)/bin GO111MODULE=on go install helm.sh/helm/v3/cmd/helm@$(HELM_VERSION)
 
 .PHONY: kubectl-validate

hack/verify-helm.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+# Copyright 2025 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+SCRIPT_ROOT=$(dirname "${BASH_SOURCE}")/..
+
+declare -A test_cases_inference_pool
+
+# InferencePool Helm Chart test cases
+test_cases_inference_pool["basic"]="--set inferencePool.modelServers.matchLabels.app=llm-instance-gateway"
+test_cases_inference_pool["gke-provider"]="--set provider.name=gke --set inferencePool.modelServers.matchLabels.app=llm-instance-gateway"
+test_cases_inference_pool["multiple-replicas"]="--set inferencePool.replicas=3 --set inferencePool.modelServers.matchLabels.app=llm-instance-gateway"
+
+# Run the install command in case this script runs from a different bash
+# source (such as in the verify-all script)
+make helm-install
+
+# Running tests cases
+echo "Running helm template command for inferencePool chart..."
+# Loop through the keys of the associative array
+for key in "${!test_cases_inference_pool[@]}"; do
+  echo "Running test: $key"
+  ${SCRIPT_ROOT}/bin/helm template ${SCRIPT_ROOT}/config/charts/inferencepool ${test_cases_inference_pool[$key]} --output-dir="${SCRIPT_ROOT}/bin"
+  if [ $? -ne 0 ]; then
+    echo "Helm template command failed for test: $key"
+    exit 1
+  fi
+done
+
+
+

hack/verify-manifests.sh

@@ -45,6 +45,8 @@ main() {
   fetch_crds "https://raw.githubusercontent.com/GoogleCloudPlatform/gke-gateway-api/refs/tags/${GKE_GATEWAY_API_VERSION}/config/crd/networking.gke.io_healthcheckpolicies.yaml"
   fetch_crds "https://raw.githubusercontent.com/istio/istio/refs/tags/${ISTIO_VERSION}/manifests/charts/base/files/crd-all.gen.yaml"
 
+  # Run the install command in case this script runs from a different bash
+  # source (such as in the verify-all script)
   make kubectl-validate
 
   ${SCRIPT_ROOT}/bin/kubectl-validate "${TEMP_DIR}"