fix: skip helm chart tests when helm is not installed (#788)

* fix: skip helm chart tests when helm is not installed

Signed-off-by: Vivek Karunai Kiri Ragavan <vkarunai@redhat.com>

* fix: auto-download helm in Makefile when not present

Signed-off-by: Vivek Karunai Kiri Ragavan <vkarunai@redhat.com>

---------

Signed-off-by: Vivek Karunai Kiri Ragavan <vkarunai@redhat.com>

Author: vivekk16

Makefile

@@ -89,8 +89,8 @@ vet: ## Run go vet against code.
 	go vet ./...
 
 .PHONY: test
-test: manifests generate fmt vet setup-envtest ## Run tests.
-	KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) --bin-dir $(LOCALBIN) -p path)" go test $$(go list ./... | grep -v /e2e) -coverprofile cover.out
+test: manifests generate fmt vet setup-envtest helm ## Run tests.
+	KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) --bin-dir $(LOCALBIN) -p path)" PATH=$(LOCALBIN):$(PATH) go test $$(go list ./... | grep -v /e2e) -coverprofile cover.out
 
 # Creates a multi-node Kind cluster
 # Adds emulated GPU labels and capacities per node
@@ -398,6 +398,7 @@ KUSTOMIZE ?= $(LOCALBIN)/kustomize
 CONTROLLER_GEN ?= $(LOCALBIN)/controller-gen
 ENVTEST ?= $(LOCALBIN)/setup-envtest
 GOLANGCI_LINT = $(LOCALBIN)/golangci-lint
+HELM ?= $(LOCALBIN)/helm
 
 ## Tool Versions
 KUSTOMIZE_VERSION ?= v5.6.0
@@ -407,6 +408,7 @@ ENVTEST_VERSION ?= $(shell go list -m -f "{{ .Version }}" sigs.k8s.io/controller
 #ENVTEST_K8S_VERSION is the version of Kubernetes to use for setting up ENVTEST binaries (i.e. 1.31)
 ENVTEST_K8S_VERSION ?= $(shell go list -m -f "{{ .Version }}" k8s.io/api | awk -F'[v.]' '{printf "1.%d", $$3}')
 GOLANGCI_LINT_VERSION ?= v2.8.0
+HELM_VERSION ?= v3.17.1
 
 .PHONY: kustomize
 kustomize: $(KUSTOMIZE) ## Download kustomize locally if necessary.
@@ -472,6 +474,17 @@ $(GOLANGCI_LINT): $(LOCALBIN)
 	} ;\
 	ln -sf golangci-lint-$(GOLANGCI_LINT_VERSION) $(GOLANGCI_LINT)
 
+.PHONY: helm
+helm: $(HELM) ## Download helm locally if necessary.
+$(HELM): $(LOCALBIN)
+	@[ -f "$(LOCALBIN)/helm-$(HELM_VERSION)" ] || { \
+	set -e; \
+	echo "Downloading helm $(HELM_VERSION)"; \
+	curl -sSfL https://get.helm.sh/helm-$(HELM_VERSION)-$(shell go env GOOS)-$(shell go env GOARCH).tar.gz | tar xz --no-same-owner -C $(LOCALBIN) --strip-components=1 $(shell go env GOOS)-$(shell go env GOARCH)/helm; \
+	mv $(LOCALBIN)/helm $(LOCALBIN)/helm-$(HELM_VERSION); \
+	} ;\
+	ln -sf helm-$(HELM_VERSION) $(HELM)
+
 # go-install-tool will 'go install' any package with custom target and name of binary, if it doesn't exist
 # $1 - target path with name of binary
 # $2 - package url which can be installed