name: CI
on: { push: { branches: [main] }, pull_request: {}, workflow_dispatch: {} }

# Supersede an in-flight run when a newer commit lands, instead of leaving a
# queued job to be cancelled later -- a cancelled run shows red on the badge
# and is indistinguishable from a real failure at a glance.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version: '3.12'
      - run: pip install pytest ruff==0.14.9 -r requirements.txt
      - name: Demo logic and app wiring
        run: pytest -q
      - name: Lint
        run: ruff check .
      # The Space is only useful if it actually serves. Build the Blocks app and
      # confirm every tab is present, rather than trusting that it imports.
      - name: The app builds and serves all three tabs
        run: |
          python - <<'PY'
          import app
          demo = app.build()
          labels = {b.label for b in demo.blocks.values()
                    if type(b).__name__ == "TabItem"}
          expected = {"S-parameters", "Coupling extractors", "The certified bound"}
          assert expected <= labels, f"missing tabs: {expected - labels}"
          assert len(demo.fns) >= 8, "event handlers went missing"
          print(f"OK: {len(demo.blocks)} components, {len(demo.fns)} handlers")
          PY