check.yml

name: Test render

on:
  pull_request:
    branches: [main]

permissions:
  contents: read

env:
  # Generate diffs relative to our downstream PR branch, not to downstream Git
  # main.  This omits changes that have merged in repo-templates but haven't
  # merged downstream yet, making review easier.  The Makefile does the same
  # when generating diffs for interactive development.
  FORK_ARGS: --fork-regex /coreos/ --fork-replacement /coreosbot-releng/ --fork-branch repo-templates

jobs:
  render:
    name: Render
    runs-on: ubuntu-latest
    container: registry.fedoraproject.org/fedora:latest
    steps:
      - name: Check out repository
        uses: actions/checkout@v4
      - name: Install dependencies
        run: dnf install -y cargo git-core python3-pyyaml
      - name: Check for unreferenced templates
        run: |
          python3 -c 'import yaml; print("\n".join(yaml.safe_load(open("config.yaml"))["templates"]))' |
              sed -e 's/\.[a-z0-9]*$/.yaml/' -e '/^[^.]*$/ s/$/.yaml/' > expected
          stray=$(find . -path ./config.yaml -prune -o -name '*.yaml' -print |
              sed 's:^\./::' |
              grep -Fvxf expected ||:)
          if [ -n "${stray}" ]; then
              echo "Found template configs not referenced in config.yaml:"
              echo "${stray}"
              exit 1
          fi
      - name: Cache build artifacts
        uses: Swatinem/rust-cache@v2
        with:
          workspaces: tmpl8
      - name: Build tmpl8 binary
        run: cd tmpl8 && cargo build
      - name: Sync cache
        run: tmpl8/target/debug/tmpl8 update-cache $FORK_ARGS
      - name: Render diffs
        run: tmpl8/target/debug/tmpl8 diff $FORK_ARGS