test.yaml

name: Test Charts

on: pull_request

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

      - name: Set up Helm
        uses: azure/setup-helm@v3
        with:
          version: v3.8.1

      # Python is required because `ct lint` runs Yamale (https://github.com/23andMe/Yamale),
      # yamllint (https://github.com/adrienverge/yamllint) which require Python and
      # generate-creds step below which uses python to parse yaml file.
      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: 3.7

      - name: Set up chart-testing
        uses: helm/chart-testing-action@v2.4.0
        with:
          version: v3.7.0

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

      - name: Add dependency chart repos
        run: |
          for dir in $(ls -d charts/*/); do
            num_of_deps=$(( $(helm dependency list $dir 2> /dev/null | tail +2 | wc -l ) -1 ))
            if [ $num_of_deps -gt 0 ]; then
              helm dependency list $dir 2> /dev/null | tail +2 | head -n $num_of_deps | awk '{ print " " $1 " " $3 }' | grep -v "file://" | xargs -n 2 helm repo add --force-update
            fi
          done

      - name: Install plugin and run Unit-tests on changed charts
        id: unit-tests
        env:
          CHARTS_CHANGED: ${{ steps.list-changed.outputs.charts_changed }}
          # Pinning the unittest plugin version as the latest master has a regression in matchRegex
          UNITTEST_PLUGIN_VERSION: v0.2.11
        run: |
          helm plugin install https://github.com/quintush/helm-unittest --version=$UNITTEST_PLUGIN_VERSION > /dev/null 2>&1
          for chart in $CHARTS_CHANGED; do
            chart=`echo $chart | sed 's/ *$//g'`
            cd $chart
            helm dep build > /dev/null 2>&1
            helm unittest --helm3 -u -d .
            cd ../../
          done

      - name: Create kind cluster
        uses: helm/kind-action@v1.8.0
        if: steps.list-changed.outputs.changed == 'true'
        with:
          node_image: kindest/node:v1.22.7

      - name: Install metallb in kind cluster for load balancer services
        if: steps.list-changed.outputs.changed == 'true'
        run: |
          ./scripts/install_metallib.sh

      - name: Add cluster credentials as a file if merlin/turing is being installed
        env:
          CHARTS_CHANGED: ${{ steps.list-changed.outputs.charts_changed }}
        run: |
          if [[ $(echo $CHARTS_CHANGED | grep 'charts/\(merlin\|turing\|caraml\)') ]]; then
            CHARTS_CHANGED=$CHARTS_CHANGED ./scripts/generate-cluster-creds.sh kind chart-testing
          fi

      - name: Run chart-testing (install)
        run: ct install --config .github/config/ct.yaml --excluded-charts kserve,common --print-config

      - name: Run chart-testing for kserve (install)
        env:
          CHARTS_CHANGED: ${{ steps.list-changed.outputs.charts_changed }}
        run: |
          if [[ $(echo $CHARTS_CHANGED | grep 'charts/kserve') ]]; then
            ct install --charts charts/kserve --namespace kserve --helm-extra-set-args "--create-namespace" --debug
          fi