lint-test.yaml

name: Lint and Test Charts

on: pull_request

jobs:
  lint-test:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up Helm
        uses: azure/setup-helm@v4
        with:
          version: v3.12.0

      - uses: actions/setup-python@v5
        with:
          python-version: '3.7'

      - name: Set up chart-testing
        uses: helm/chart-testing-action@v2.6.1

      - name: Run chart-testing (list-changed)
        id: list-changed
        run: |
          changed="$(ct list-changed --config .github/linters/ct.yaml)"
          if [[ -n "$changed" ]]; then
            echo "changed=true" >> "$GITHUB_OUTPUT"
            echo "changed_list=\"${changed//$'\n'/ }\"" >> "$GITHUB_OUTPUT"
          fi

      # - name: install helm unittest plugin
      #   if: steps.list-changed.outputs.changed == 'true'
      #   run: |
      #     helm env
      #     helm plugin install https://github.com/quintush/helm-unittest.git --version 0.2.8

      - name: Run chart-testing (lint)
        run: ct lint --config .github/linters/ct.yaml

      - name: Create kind cluster
        uses: helm/kind-action@v1.10.0
        if: steps.list-changed.outputs.changed == 'true'

      - name: Apply Gateway API CRDs
        run: kubectl apply -k https://github.com/kubernetes-sigs/gateway-api/config/crd
        if: steps.list-changed.outputs.changed == 'true'

      - name: Apply Prometheus Operator CRDs (unless for charts already installing it)
        env:
          CHANGED_LIST: ${{ steps.list-changed.outputs.changed_list }}
        run: |
          # Always run unless only changed chart is one of impacted charts
          echo "List is: $CHANGED_LIST"
          if [ "$CHANGED_LIST" = '"charts/kube-prometheus-stack"' ] || [ "$CHANGED_LIST" = '"charts/prometheus-operator-crds"' ]; then
            echo "Skipping install"
          else
            helm install prometheus-operator-crds oci://ghcr.io/prometheus-community/charts/prometheus-operator-crds
          fi
        if: steps.list-changed.outputs.changed == 'true'

      - name: Run chart-testing (install)
        run: ct install --config .github/linters/ct.yaml