lint-test.yml

name: Lint and Test Charts

on: pull_request

jobs:
  lint-test:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
        with:
          fetch-depth: 0

      - name: Set up Helm
        uses: azure/setup-helm@5119fcb9089d432beecbf79bb2c7915207344b78 # v3.5
        with:
          version: v3.13.0

      # Python is required because `ct lint` runs Yamale (https://github.com/23andMe/Yamale) and
      # yamllint (https://github.com/adrienverge/yamllint) which require Python
      - name: Set up Python
        uses: actions/setup-python@65d7f2d534ac1bc67fcd62888c5f4f3d2cb2b236 # v4.7.1
        with:
          python-version: 3.x

      - 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 --target-branch ${{ github.event.repository.default_branch }})
          if [[ -n "$changed" ]]; then
            echo "changed=true" >> "$GITHUB_OUTPUT"
          fi

      - name: Run chart-testing (lint)
        if: steps.list-changed.outputs.changed == 'true'
        run: ct lint --target-branch ${{ github.event.repository.default_branch }}