test(ci): cover Helm chart version mapping (#2751)

scripts/test_helm_chart_version.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
+SCRIPT="$ROOT_DIR/scripts/helm_chart_version.sh"
+
+assert_version() {
+  local raw="$1"
+  local expected_raw_tag="$2"
+  local expected_app_version="$3"
+  local expected_chart_version="$4"
+  local output
+
+  output=$(mktemp)
+  GITHUB_OUTPUT="$output" "$SCRIPT" "$raw"
+
+  grep -qx "raw_tag=$expected_raw_tag" "$output"
+  grep -qx "app_version=$expected_app_version" "$output"
+  grep -qx "chart_version=$expected_chart_version" "$output"
+
+  rm -f "$output"
+}
+
+assert_version "refs/tags/v1.0.0-beta.12" "v1.0.0-beta.12" "1.0.0-beta.12" "0.12.0"
+assert_version "v1.0.0" "v1.0.0" "1.0.0" "1.0.0"
+assert_version "refs/tags/1.0.0" "1.0.0" "1.0.0" "1.0.0"