Add verify scripts for make gen to run during PR

Makefile

@@ -94,7 +94,7 @@ push-all: image.amd64 image.arm image.arm64
 clean:
 	rm -rf _output
 
-verify: verify-gofmt verify-vendor lint lint-chart verify-spelling verify-toc
+verify: verify-gofmt verify-vendor lint lint-chart verify-spelling verify-toc verify-gen
 
 verify-spelling:
 	./hack/verify-spelling.sh
@@ -120,6 +120,9 @@ gen:
 	./hack/update-generated-defaulters.sh
 	./hack/update-toc.sh
 
+verify-gen:
+	./hack/verify-conversions.sh
+
 lint:
 ifndef HAS_GOLANGCI
 	curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b ./_output/bin ${GOLANGCI_VERSION}

hack/verify-conversions.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+source "$(dirname "${BASH_SOURCE}")/lib/init.sh"
+DESCHEDULER_ROOT=$(dirname "${BASH_SOURCE}")/..
+mkdir -p "${DESCHEDULER_ROOT}/_tmp"
+_tmpdir="$(mktemp -d "${DESCHEDULER_ROOT}/_tmp/kube-verify.XXXXXX")"
+
+_deschedulertmp="${_tmpdir}"
+mkdir -p "${_deschedulertmp}"
+
+git archive --format=tar --prefix=descheduler/ "$(git write-tree)" | (cd "${_deschedulertmp}" && tar xf -)
+_deschedulertmp="${_deschedulertmp}/descheduler"
+
+pushd "${_deschedulertmp}" > /dev/null 2>&1
+go build -o "${OS_OUTPUT_BINPATH}/conversion-gen" "k8s.io/code-generator/cmd/conversion-gen"
+
+${OS_OUTPUT_BINPATH}/conversion-gen \
+		--go-header-file "hack/boilerplate/boilerplate.go.txt" \
+		--input-dirs "./pkg/apis/componentconfig/v1alpha1,./pkg/api/v1alpha1" \
+		--output-file-base zz_generated.conversion
+popd > /dev/null 2>&1
+
+pushd "${DESCHEDULER_ROOT}" > /dev/null 2>&1
+if ! _out="$(diff -Naupr pkg/ "${_deschedulertmp}/pkg/")"; then
+    echo "Generated output differs:" >&2
+    echo "${_out}" >&2
+    echo "Generated conversions verify failed."
+    exit 1
+fi
+popd > /dev/null 2>&1
+
+echo "Generated conversions verified."