name: Helm unit test

on:
  pull_request:
  push:
    branches:
      - main

permissions:
  contents: read

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

jobs:
  unit-test:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false

      - name: Set up Helm 3.11.1
        uses: azure/setup-helm@9bc31f4ebc9c6b171d7bfbaa5d006ae7abdb4310 # v5.0.1
        with:
          version: "3.11.1"

      - name: Download and verify Helm Unit Test Plugin
        run: |
          curl -fsSLo "$RUNNER_TEMP/helm-unittest.tgz" https://github.com/helm-unittest/helm-unittest/releases/download/v0.8.2/helm-unittest-linux-amd64-0.8.2.tgz
          echo "56ab3091e6fa52a7c92ee951def9bed957f295d9ce98483aed404e748d7b3a94  $RUNNER_TEMP/helm-unittest.tgz" | sha256sum -c -

      - name: Install Helm Unit Test Plugin
        run: |
          PLUGIN_DIR="$(helm env HELM_PLUGINS)/helm-unittest"
          mkdir -p "$PLUGIN_DIR"
          tar -xzf "$RUNNER_TEMP/helm-unittest.tgz" -C "$PLUGIN_DIR"
          helm plugin list

      - name: Run unit tests
        run: |
          for chart in helm/litellm-helm helm/litellm; do
            declared="$(grep -h '^suite:' "$chart"/tests/*.yaml | wc -l | tr -d '[:space:]')"
            output="$(mktemp)"
            helm unittest -f 'tests/*.yaml' "$chart" | tee "$output"
            executed="$(sed -n 's/^Test Suites:.*[[:space:]]\([0-9][0-9]*\) total$/\1/p' "$output")"
            if [ "$declared" != "$executed" ]; then
              echo "::error::$chart declares $declared test suites but helm-unittest ran $executed. Suites are being skipped silently, so their assertions never execute."
              exit 1
            fi
            echo "$chart: all $declared declared test suites ran"
          done